Android:TabView片段中的微调器在实现时替换选项卡
我试图在TabView的三个选项卡中的一个选项卡中放置一个微调器。微调器替换所有选项卡,我在屏幕上只看到微调器 如果在FacultyTab.java中的Android:TabView片段中的微调器在实现时替换选项卡,android,android-spinner,Android,Android Spinner,我试图在TabView的三个选项卡中的一个选项卡中放置一个微调器。微调器替换所有选项卡,我在屏幕上只看到微调器 如果在FacultyTab.java中的onCreateView中删除方法setSpinnerContent(视图),则选项卡可见 下面是我用来实现微调器和TabView的代码(建议使用TabView): MainPage.java(所有选项卡都在此处实现) 主页.xml <?xml version="1.0" encoding="utf-8"?> <LinearLa
onCreateView
中删除方法setSpinnerContent(视图)
,则选项卡可见
下面是我用来实现微调器和TabView的代码(建议使用TabView):
MainPage.java(所有选项卡都在此处实现)
主页.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.collegecommune.MainPage">
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
android:minHeight="?attr/actionBarSize"
app:tabGravity="fill"/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
FacultyTab.java
public class FacultyTab extends Fragment implements AdapterView.OnItemSelectedListener {
public FacultyTab() {}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.faculty_tab, container, false);
setSpinnerContent(view);
return view;
}
public void setSpinnerContent(View view) {
getActivity().setContentView(R.layout.faculty_tab);
Spinner spinner = (Spinner) view.findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(),
R.array.faculty_array, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
}
}
public class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
公共类FacultyTab扩展片段实现AdapterView.OnItemSelectedListener{
公共FacultyTab(){}
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
}
已选择公共id(AdapterView父对象、视图v、int位置、长id){}
@凌驾
未选公共无效(AdapterView AdapterView){}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图=充气机。充气(R.layout.U选项卡,容器,错误);
设置PinnerContent(视图);
返回视图;
}
公共void setSpinnerContent(视图){
getActivity().setContentView(R.layout.faculture_选项卡);
微调器微调器=(微调器)view.findViewById(R.id.Spinner);
ArrayAdapter=ArrayAdapter.createFromResource(getActivity(),
R.array.faculty_数组,android.R.layout.simple_微调器_项);
setDropDownViewResource(android.R.layout.simple\u微调器\u下拉菜单\u项);
旋转器。设置适配器(适配器);
spinner.setOnItemSelectedListener(此);
}
}
faculty_tab.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Spinner
android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:entries="@array/faculty_array"/>
</RelativeLayout>
Adapter.java
public class FacultyTab extends Fragment implements AdapterView.OnItemSelectedListener {
public FacultyTab() {}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.faculty_tab, container, false);
setSpinnerContent(view);
return view;
}
public void setSpinnerContent(View view) {
getActivity().setContentView(R.layout.faculty_tab);
Spinner spinner = (Spinner) view.findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getActivity(),
R.array.faculty_array, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(this);
}
}
public class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
公共类适配器扩展FragmentPagerAdapter{
私有最终列表MFFragmentList=new ArrayList();
私有最终列表MFFragmentTitleList=new ArrayList();
公共适配器(碎片管理器){
高级经理;
}
@凌驾
公共片段getItem(int位置){
返回MFFragmentList.get(位置);
}
@凌驾
public int getCount(){
返回MFFragmentList.size();
}
public void addFragment(片段片段,字符串标题){
添加(片段);
MFFragmentTitleList.add(标题);
}
@凌驾
公共字符序列getPageTitle(int位置){
返回MFFragmentTitleList.get(位置);
}
}
首先,我在实现Spinner时遇到一些运行时错误,但在Stackoverflow中搜索后,我删除了错误,但现在这个问题发生了
注意:我是Android的初学者。我找不到实现TabView的方法,所以我复制了它并编辑了其中的一些部分。关于更好地实施TabView的建议也会有很大帮助。只要删除这一行
getActivity().setContentView(R.layout.faculty_tab);
setContentView将
R.layout.faculture\u选项卡设置为主页视图。不是tab的观点我觉得自己有点愚蠢。但它很有效。对实施表格布局有何建议?我会帮助你的。