Java TabListener没有';行不通
我尝试在我的应用程序中实现选项卡,并遵循本教程:Java TabListener没有';行不通,java,android,tabs,listener,Java,Android,Tabs,Listener,我尝试在我的应用程序中实现选项卡,并遵循本教程: 但是现在我有一个问题,我的TabListener没有从我的选项卡中获取参数 表1类别: package com.example.MainActivity; import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGrou
但是现在我有一个问题,我的TabListener没有从我的选项卡中获取参数 表1类别:
package com.example.MainActivity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.MainActivity.R;
public class Tab1 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myFragmentView = inflater.inflate(R.layout.fragment_a, container, false);
return myFragmentView;
}
}
这是我的TabListener:
public class TabListener <T extends Fragment> implements ActionBar.TabListener{
private final Activity myActivity;
private final String myTag;
private final Class myClass;
public TabListener(Activity activity, String tag, Class<T> cls) {
myActivity = activity;
myTag = tag;
myClass = cls;
}
@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
Fragment myFragment = myActivity.getFragmentManager().findFragmentByTag(myTag);
// Check if the fragment is already initialized
if (myFragment == null) {
// If not, instantiate and add it to the activity
myFragment = Fragment.instantiate(myActivity, myClass.getName());
ft.add(android.R.id.content, myFragment, myTag);
} else {
// If it exists, simply attach it in order to show it
ft.attach(myFragment);
}
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
Fragment myFragment = myActivity.getFragmentManager().findFragmentByTag(myTag);
if (myFragment != null) {
// Detach the fragment, because another one is being attached
ft.detach(myFragment);
}
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
公共类TabListener实现ActionBar.TabListener{
私人最终活动;
私有最终字符串myTag;
私人期末班myClass;
公共TabListener(活动、字符串标记、类cls){
我的活动=活动;
myTag=tag;
myClass=cls;
}
@凌驾
已选择的公共事务(ActionBar.Tab选项卡,FragmentTransaction ft){
Fragment myFragment=myActivity.getFragmentManager().findFragmentByTag(myTag);
//检查片段是否已初始化
if(myFragment==null){
//如果不是,则实例化并将其添加到活动中
myFragment=Fragment.instantiate(myActivity,myClass.getName());
ft.add(android.R.id.content、myFragment、myTag);
}否则{
//如果存在,只需将其附加以显示即可
ft.attach(myFragment);
}
}
@凌驾
已选择公共无效OnTab(ActionBar.Tab选项卡,FragmentTransaction ft){
Fragment myFragment=myActivity.getFragmentManager().findFragmentByTag(myTag);
if(myFragment!=null){
//拆下碎片,因为正在连接另一个碎片
ft.detach(myFragment);
}
}
@凌驾
已重新选择公共void ontaber(ActionBar.Tab选项卡,FragmentTransaction ft){
//TODO自动生成的方法存根
}
}
主要活动:
public class MyActivity extends Activity {
private String string1 = "gahwareawbad password gagaw";
public String datum = new String("");
//STUNDENPLAN-VARIABLEN
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
ActionBar.Tab tabA = actionBar.newTab();
tabA.setText("Tab A");
tabA.setTabListener(new TabListener<Tab1>(this, "Tag A", Tab1.class));
actionBar.addTab(tabA);
Tab tabB = actionBar.newTab();
tabB.setText("Tab B");
tabB.setTabListener(new TabListener<Tab2>(this, "Tag B", Tab2.class));
actionBar.addTab(tabB);
Tab tabC = actionBar.newTab();
tabC.setText("Tab C");
tabC.setTabListener(new TabListener<Tab3>(this, "Tag C", Tab3.class));
actionBar.addTab(tabC);
if (savedInstanceState != null) {
int savedIndex = savedInstanceState.getInt("SAVED_INDEX");
getActionBar().setSelectedNavigationItem(savedIndex);
}
// quellcode = (TextView) findViewById(com.example.MainActivity.R.id.TextView01);
geschichte = (TextView) findViewById(com.example.MainActivity.R.id.geschichte);
datum1 = (TextView) findViewById(com.example.MainActivity.R.id.datum1);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
outState.putInt("SAVED_INDEX", getActionBar().getSelectedNavigationIndex());
}
}
公共类MyActivity扩展活动{
私有字符串string1=“gahwarewbad password gagaw”;
公共字符串数据=新字符串(“”);
//变位素
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
最终ActionBar ActionBar=getActionBar();
actionBar.setNavigationMode(actionBar.NAVIGATION\u MODE\u选项卡);
ActionBar.Tab tabA=ActionBar.newTab();
表A.setText(“表A”);
tabA.setTabListener(新的TabListener(这个“taga”,Tab1.class));
actionBar.addTab(tabA);
Tab tabB=actionBar.newTab();
表B.setText(“表B”);
tabB.setTabListener(新的TabListener(这个“标签B”,Tab2.class));
actionBar.addTab(tabB);
Tab tabC=actionBar.newTab();
表C.setText(“表C”);
tabC.setTabListener(新的TabListener(这个“标记C”,Tab3.class));
actionBar.addTab(tabC);
如果(savedInstanceState!=null){
int savedIndex=savedInstanceState.getInt(“保存的索引”);
getActionBar().setSelectedNavigationItem(savedIndex);
}
//quellcode=(TextView)findViewById(com.example.MainActivity.R.id.TextView01);
geschichte=(TextView)findViewById(com.example.MainActivity.R.id.geschichte);
datum1=(TextView)findViewById(com.example.MainActivity.R.id.datum1);
}
@凌驾
SaveInstanceState上受保护的无效(束超出状态){
//TODO自动生成的方法存根
super.onSaveInstanceState(超出状态);
putInt(“保存的索引”,getActionBar().getSelectedNavigationIndex());
}
}
MainXML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TabHost
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/tabHost">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</TabWidget>
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="@+id/einstellungen"
android:layout_width="fill_parent android:layout_height="fill_parent" android:orientation="vertical" android:background="#ffffff">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="@+id/datum1" android:layout_gravity="center_horizontal"
android:textColor="#000000"
android:background="#f6fff4"/>
<TableLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TableRow
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_column="0">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" android:text="Montag"
android:id="@+id/montagx" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" android:text="Dienstag"
android:id="@+id/dienstagx" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" android:text="Mittwoch"
android:id="@+id/mittwochx" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" android:text="Donnerstag"
android:id="@+id/donnerstagx" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" android:text="Freitag"
android:id="@+id/freitagx" android:textColor="#000000"/>
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag1" android:layout_column="0" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag1" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch1" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag1" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag1" android:textColor="#000000"/>
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag2" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag2" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch2" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag2" android:textColor="#000000"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag2" android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/montag3"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/dienstag3"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/mittwoch3"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/donnerstag3"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/freitag3"
android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow2">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag4" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag4" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch4" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag4" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag4" android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow3">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/montag5"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/dienstag5"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/mittwoch5"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/donnerstag5"
android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" android:id="@+id/freitag5"
android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow4">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag6" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag6" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch6" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag6" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag6" android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow5">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag7" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag7" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch7" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag7" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag7" android:textColor="#000000"/>
</TableRow>
<TableRow android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/tableRow6">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/montag8" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/dienstag8" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/mittwoch8" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/donnerstag8" android:textColor="#000000"/>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/freitag8" android:textColor="#000000"/>
</TableRow>
</TableLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/tab1"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</LinearLayout>
<LinearLayout
android:id="@+id/tab2"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</LinearLayout>
<LinearLayout
android:id="@+id/tab3"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
MainActivity中的导入问题
改变这个
import android.app.ActionBar.TabListener;
到
或者更改您的自定义TabListener类名。不从我的选项卡中获取参数-您能解释更多吗?我得到以下错误代码:java:type android.app.ActionBar.TabListener不在我设置TabListener的行中获取参数。例如:tabA.setTabListener(新的TabListener(这个“taga”,Tab1.class));您的自定义片段名称是什么?是Tab1吗?是的,Tab1、Tab2和TAB3自定义类是否扩展了片段?好的,我更改了,现在它成功编译:)但应用程序在一开始就崩溃了:/你知道为什么吗?发布堆栈跟踪日志我在哪里找到它?你可以在LogCatalo中看到发布你的主布局xml
import android.app.ActionBar.TabListener;
import com.example.MainActivity.TabListener