Java 如何在布局中绘制布局
我有一个应用程序，在点击统计数据后，我称之为StatsFragment。StatsFragment使用fragment_stats xml布局，其中有一个TabLayout和CustomViewPager。然而，当我点击统计数据时，我的StatsFragment被称为数据，但并没有在那里绘制。单击某些选项卡后，数据将显示在那里。 问题在于初始绘图。从我知道我将使用ViewTreeObserver，但无法找到在哪里以及如何使用的方法Java 如何在布局中绘制布局,java,android,xml,layout,android-viewtreeobserver,Java,Android,Xml,Layout,Android Viewtreeobserver,我有一个应用程序，在点击统计数据后，我称之为StatsFragment。StatsFragment使用fragment_stats xml布局，其中有一个TabLayout和CustomViewPager。然而，当我点击统计数据时，我的StatsFragment被称为数据，但并没有在那里绘制。单击某些选项卡后，数据将显示在那里。 问题在于初始绘图。从我知道我将使用ViewTreeObserver，但无法找到在哪里以及如何使用的方法 <ScrollView android:layou
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".StatsFragment">
<!-- TODO: Update blank fragment layout -->
<!--android:elevation="6dp"-->
<android.support.design.widget.TabLayout
android:id="@+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
<pv239.fi.muni.cz.moneymanager.CustomViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="@id/tab_layout"
>
<android.support.v4.view.PagerTitleStrip
android:id="@+id/pager_title_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#33b5e5"
android:textColor="#fff"
android:paddingTop="4dp"
android:paddingBottom="4dp" />
</pv239.fi.muni.cz.moneymanager.CustomViewPager>
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
了解更多信息。
*/
StatsInteractionListener上的公共接口{
//TODO:更新参数类型和名称
void onStatsInteraction（Uri）；
}
私人日期编号ToDate（int daysBack、int Monthback、int yearsBack）
{
Calendar cal=Calendar.getInstance（）；
cal.add（日历日，日历日*（-1））；
计算添加（日历月，月背*（-1））；
cal.add（日历年，年份备份*（-1））；
返回cal.getTime（）；
}
public void processChanges（视图选项卡视图，int tabNum）
{
int d=7；
int m=0；
int y=0；
MMDatabaseHelper sloh=MMDatabaseHelper.getInstance（getActivity（））；
if（tabNum==1）
{
d=0；
m=1；
y=0；
}
else if（tabNum==2）
{
d=0；
m=0；
y=1；
}
createGraph（选项卡视图、d、m、y、sloh）；
立根平衡（tabView、d、m、y、sloh）；
setListValues（选项卡视图、d、m、y、sloh）；
}
私有void setListValues（视图选项卡视图、int d、int m、int y、MMDatabaseHelper sloh）{
//创建收入列表
incomeListView=（ListView）选项卡视图.findViewById（R.id.listViewIncomeStats）；
游标incomeRecords=sloh.getRecordsInRange（“>”，d，m，y）；
RecordsDbToStatsAdapter incomeAdapter=新的RecordsDbToStatsAdapter（this.getContext（），incomeRecords，0）；
incomeListView.setAdapter（incomeAdapter）；
//创建费用清单
expensesListView=（ListView）选项卡视图.findViewById（R.id.ListViewExpenses）；
光标费用记录=sloh.getRecordsRange（“”，d，m，y）；
BigDecimal incValue=新的BigDecimal（helpInc.toString（））；
incSum.setText（format.format（incValue.abs（）.setScale（2.doubleValue（）））；
TextView expSum=（TextView）tabView.findviewbyd（R.id.expenseSumStats）；
整型helpExp=sloh.getSumRecordsInRange（“据我所知，您没有在正确的时间做正确的事情。
当调用片段的onCreateView
时，您会膨胀相应的布局，但不在其中设置任何值
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
只需将活动创建的onActivityCreated
中的所有代码交换到onCreateView
中，即可完成以下操作：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("7 days"));
tabLayout.addTab(tabLayout.newTab().setText("1 month"));
tabLayout.addTab(tabLayout.newTab().setText("1 year"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final CustomViewPager viewPager = (CustomViewPager) layout.findViewById(R.id.pager);
final PagerAdapter adapter = new PagerAdapter(getActivity().getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.setPagingEnabled(false);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
processChanges((adapter.getItem(tab.getPosition())).getView(),tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
return (layout);
}
编辑：在第二次（更仔细地）查看代码之后，最好的办法是让片段管理选项卡，这样您就可以将逻辑放在其中（并将它们放在每个选项卡中）。为此：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
步骤1：为页面创建一个新的片段类
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
public abstract class PageFragment extends Fragment {
private int pageNumber;
public static PageFragment newInstance(int page) {
Bundle args = new Bundle();
args.putInt("page_number", page);
PageFragment fragment = new PageFragment();
fragment.setArguments(args);
return (fragment);
}
public PageFragment(){}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
pageNumber = getArguments().getInt("page_number");
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.tab_fragment, container, false);
//Get all the views you need for your page, using
//layout.findViewById();
//Then you will need to call processChanges for that page
processChanges(layout, pageNumber);
return (layout);
}
//Also add here all the logic associated with processChanges
}
第2步是在StatsFragment中获取片段的引用，并将这些片段添加到寻呼机：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
private PageFragment pageOne;
private PageFragment pageTwo;
private PageFragment pageThree;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
pageOne = PageFragment.newInstance(0);
pageTwo = PageFragment.newInstance(1);
pageThree = PageFragment.newInstance(2);
tabLayout.addFragment(pageOne, "7 days");
tabLayout.addFragment(pageTwo, "1 month");
tabLayout.addFragment(pageThree, "1 year");
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
}
public class MyViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public MyViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
步骤3：您最终需要一个自定义寻呼机适配器来保存寻呼机的标题和片段：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
private PageFragment pageOne;
private PageFragment pageTwo;
private PageFragment pageThree;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
pageOne = PageFragment.newInstance(0);
pageTwo = PageFragment.newInstance(1);
pageThree = PageFragment.newInstance(2);
tabLayout.addFragment(pageOne, "7 days");
tabLayout.addFragment(pageTwo, "1 month");
tabLayout.addFragment(pageThree, "1 year");
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
}
public class MyViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public MyViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
据我所知，你没有在正确的时间做正确的事情。
当调用片段的onCreateView
时，您会膨胀相应的布局，但不在其中设置任何值
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
只需将活动创建的onActivityCreated
中的所有代码交换到onCreateView
中，即可完成以下操作：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("7 days"));
tabLayout.addTab(tabLayout.newTab().setText("1 month"));
tabLayout.addTab(tabLayout.newTab().setText("1 year"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final CustomViewPager viewPager = (CustomViewPager) layout.findViewById(R.id.pager);
final PagerAdapter adapter = new PagerAdapter(getActivity().getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.setPagingEnabled(false);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
processChanges((adapter.getItem(tab.getPosition())).getView(),tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
return (layout);
}
编辑：在第二次（更仔细地）查看代码之后，最好的办法是让片段管理选项卡，这样您就可以将逻辑放在其中（并将它们放在每个选项卡中）。为此：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
步骤1：为页面创建一个新的片段类
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
public abstract class PageFragment extends Fragment {
private int pageNumber;
public static PageFragment newInstance(int page) {
Bundle args = new Bundle();
args.putInt("page_number", page);
PageFragment fragment = new PageFragment();
fragment.setArguments(args);
return (fragment);
}
public PageFragment(){}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
pageNumber = getArguments().getInt("page_number");
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.tab_fragment, container, false);
//Get all the views you need for your page, using
//layout.findViewById();
//Then you will need to call processChanges for that page
processChanges(layout, pageNumber);
return (layout);
}
//Also add here all the logic associated with processChanges
}
第2步是在StatsFragment中获取片段的引用，并将这些片段添加到寻呼机：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
private PageFragment pageOne;
private PageFragment pageTwo;
private PageFragment pageThree;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
pageOne = PageFragment.newInstance(0);
pageTwo = PageFragment.newInstance(1);
pageThree = PageFragment.newInstance(2);
tabLayout.addFragment(pageOne, "7 days");
tabLayout.addFragment(pageTwo, "1 month");
tabLayout.addFragment(pageThree, "1 year");
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
}
public class MyViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public MyViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
步骤3：您最终需要一个自定义寻呼机适配器来保存寻呼机的标题和片段：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
private PageFragment pageOne;
private PageFragment pageTwo;
private PageFragment pageThree;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View layout = inflater.inflate(R.layout.fragment_stats, container, false);
TabLayout tabLayout = (TabLayout)layout.findViewById(R.id.tab_layout);
pageOne = PageFragment.newInstance(0);
pageTwo = PageFragment.newInstance(1);
pageThree = PageFragment.newInstance(2);
tabLayout.addFragment(pageOne, "7 days");
tabLayout.addFragment(pageTwo, "1 month");
tabLayout.addFragment(pageThree, "1 year");
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
}
public class MyViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public MyViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
根据Nsimon，我更新了当前状态。这为我解决了初始屏幕的问题。非常感谢Nsimon
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
ViewPagerAdapter：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
public class ViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
根据Nsimon，我更新了当前状态。这为我解决了初始屏幕的问题。非常感谢Nsimon
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
ViewPagerAdapter：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:id="@+id/gridViewScreenStats">
<com.jjoe64.graphview.GraphView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="@+id/graph" />
<GridLayout
android:id="@+id/stats"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/graph"
android:layout_gravity="center"
android:background="@drawable/box"
android:layout_margin="10dp"
android:rowCount="5"
android:columnCount="2"
android:padding="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Starting balance: "
android:paddingLeft="10dp"
android:id="@+id/startBalanceLabel"
android:layout_row="0"
android:layout_column="0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/startBalanceLabel"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/startBalance"
android:layout_row="0"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Ending balance: "
android:paddingLeft="10dp"
android:id="@+id/endBalanceLabel"
android:layout_row="1"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/startBalance"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:layout_toRightOf="@id/endBalanceLabel"
android:id="@+id/endBalance"
android:layout_row="1"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Incomes: "
android:layout_below="@id/endBalanceLabel"
android:id="@+id/incomeStats"
android:layout_row="2"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordPositiveValue"
android:id="@+id/incomeSumStats"
android:layout_below="@id/endBalance"
android:textAlignment="textEnd"
android:layout_row="2"
android:layout_column="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Expenses:"
android:id="@+id/expenseStats"
android:layout_row="3"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:textColor="@color/recordNegativeValue"
android:id="@+id/expenseSumStats"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="3"
android:layout_column="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="+/- status:"
android:id="@+id/actualStats"
android:layout_row="4"
android:layout_column="0" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="@+id/actualSumStats"
android:textColor="@color/recordPositiveValue"
android:textAlignment="textEnd"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_row="4"
android:layout_column="1" />
</GridLayout>
<!-- Income records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@id/stats"
android:layout_margin="10dp"
android:id="@+id/listViewIncomeStats"
android:nestedScrollingEnabled="true"/>
<!-- Expenses records -->
<ListView
android:layout_width="wrap_content"
android:layout_height="300dp"
android:background="@drawable/box"
android:layout_below="@+id/listViewIncomeStats"
android:layout_margin="10dp"
android:id="@+id/listViewExpences"
android:nestedScrollingEnabled="true"/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
public class ViewPagerAdapter extends FragmentPagerAdapter {
private List<Fragment> mFragments = new ArrayList<>();
private List<String> mTitles = new ArrayList<>();
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mTitles.add(title);
}
@Override
public Fragment getItem(int position) {
return (mFragments.get(position));
}
@Override
public int getCount() {
return (mFragments.size());
}
@Override
public String getPageTitle(int position) {
return (mTitles.get(position));
}
}
这将调用java.lang.NullPointerException:尝试在其中的空对象引用上调用虚拟方法“android.view.view.android.view.findViewById（int）”。它在TabLayout TabLayout=（TabLayout）getView（）.findViewById（R.id.tab_布局）上右击；您是对的，请参阅我的编辑：您不需要调用getView.findViewById，因为我们获得了视图，只需调用layout.findViewById即可。现在应用程序正在运行，但它没有解决问题。其余的都是“正常”的“因为您正在进行的计算位于processChange
函数中，该函数仅在选项卡更改时调用。如果您以前需要它，只需在需要时调用它，例如在返回（布局）行之前调用它。”
，也就是说，当您的所有视图都准备好用值填充时非常感谢。我做了一些小的其他更改，现在功能齐全。我也将用工作代码更新我的答案。非常感谢您的帮助。太棒了！！！这将调用java.lang.NullPointerException:尝试调用虚拟方法“android.view”。在其中的空对象引用上查看android.View.View.findViewById（int）”。它在TabLayout TabLayout=（TabLayout）getView（）上右击。findViewById（R.id.tab_布局）；您是对的，请参阅我的编辑：您不需要调用getView.findViewById，因为我们获得了视图，只需调用layout.findViewById即可。现在应用程序正在运行，但它没有解决问题。其余的都是“正常”的因为您正在进行的计算位于processChange
函数中，该函数仅在选项卡更改时调用。如果您以前需要它，只需在需要时调用它，例如在r行之前