自定义对话框中的ViewPager [英] ViewPager in Custom Dialog
本文介绍了自定义对话框中的ViewPager的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个自定义对话框来显示有关如何使用该应用程序的说明.我正在自定义对话框布局中使用ViewPager.我遇到错误java.lang.IllegalArgumentException:找不到片段FragmentForInstruction1的ID的视图.
I have custom dialog to show which has instruction about how to use the app.I am using ViewPager for this inside my custom dialog layout. I am getting error java.lang.IllegalArgumentException: No view found for id for fragment FragmentForInstruction1.
我创建了一个在onCreate(Bundle savedInstanceState){}方法中调用的方法.该方法会放大对话框的布局.
I have created a method which is called in onCreate(Bundle savedInstanceState) {} method .The method inflates the layout for dialog.
private void showCustomDialogForInstruction() {
final Dialog dialog = new Dialog(MainActivity.this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View dialogLayout = inflater.inflate(R.layout.dialog_layout_for_instruction_message, null, false);
layout.setAlpha(0.2f);
dialog.setCanceledOnTouchOutside(false);
dialog.setContentView(dialogLayout);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
ViewPager viewPager=(ViewPager) dialog.findViewById(R.id.pagerInstruction);
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new FragmentForInstruction1());
adapter.addFrag(new Fragme`enter code here`ntForWelcomePage2());
adapter.addFrag(new FragmentForWelcomePage3());
adapter.addFrag(new FragmentForWelcomePage4());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new OnPageChangeListener()
{
@Override
public void onPageSelected(int pos)
{
}
@Override
public void onPageScrolled(int pos, float arg1, int arg2)
{
}
@Override
public void onPageScrollStateChanged(int arg0)
{
}
});
Button done = (Button) dialog.findViewById(R.id.done);
done.setText("Got It");
done.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
Button neverShow = (Button) dialog.findViewById(R.id.nevershow);
neverShow.setText("Never Show Again");
neverShow.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog, int keyCode,
KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
return true;
}
return false;
}
});
dialog.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
dialog.show();
}
我的查看寻呼机类:
public class ViewPagerAdapter extends FragmentPagerAdapter
{
private final List<Fragment> mFragmentList = new ArrayList<Fragment>();
public ViewPagerAdapter(FragmentManager manager)
{
super(manager);
}
@Override
public Fragment getItem(int position)
{
return mFragmentList.get(position);
}
@Override
public int getCount()
{
return mFragmentList.size();
}
public void addFrag(Fragment fragment)
{
mFragmentList.add(fragment);
}
}
然后我在MainActivity中调用该方法:
and i call the method in MainActivity :
public class MainActivity extends AppCompatActivity {
SharedPreferences sharedPreferencesNeverShowAgain ;
boolean neverShowAgain;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sharedPreferencesNeverShowAgain = PreferenceManager.getDefaultSharedPreferences(this);
neverShowAgain = sharedPreferencesNeverShowAgain.getBoolean("NeverShowAgain", false);
if(!neverShowAgain){
showCustomDialogForMessage();
}
}
}
，对话框的布局为:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/dialog_shape"
android:orientation="vertical" >
<!-- layout title -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#00000000"
android:gravity="center"
android:orientation="vertical" >
<ViewFlipper
android:id="@+id/flipper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/top_edge_rounded"
android:flipInterval="2000"
android:padding="20dp" >
<TextView
android:id="@+id/dialog_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00000000"
android:gravity="center"
android:text="Input Height"
android:textColor="@color/textColor"
android:textStyle="normal" />
<TextView
android:id="@+id/title1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00000000"
android:gravity="center"
android:text="Input Height"
android:textColor="@color/accent"
android:textStyle="normal" />
</ViewFlipper>
<View
android:id="@+id/tri"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="@drawable/triangle"
android:rotation="180" />
</LinearLayout>
<!-- layout dialog content -->
<ScrollView
android:layout_width="match_parent"
android:layout_height="300dp" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<android.support.v4.view.ViewPager
android:id="@+id/pagerInstruction"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="@+id/layoutIndicater"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:gravity="center"
android:orientation="horizontal" >
</LinearLayout>
</RelativeLayout>
</ScrollView>
<!-- layout dialog buttons -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_margin="10dp"
android:background="@drawable/all_rounded_edge_plum_for_dialog" >
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_alignParentTop="true"
android:background="@color/textColor" />
<View
android:id="@+id/ViewColorPickerHelper"
android:layout_width="1dp"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="@color/textColor" />
<Button
android:id="@+id/nevershow"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_toLeftOf="@id/ViewColorPickerHelper"
android:background="?android:attr/selectableItemBackground"
android:padding="5dp"
android:text="Close"
android:textColor="@color/textColor" />
<Button
android:id="@+id/done"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_toRightOf="@id/ViewColorPickerHelper"
android:background="?android:attr/selectableItemBackground"
android:padding="5dp"
android:text="Done"
android:textColor="@color/textColor" />
</RelativeLayout>
</LinearLayout>
FragmentForInstruction1代码:
FragmentForInstruction1 code:
public class FragmentForInstruction1 extends Fragment{
@Override
@Nullable
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.fragmentinstructionpage1, container,false);
return view;
}
}
，其布局为:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/backgroundColor"
android:gravity="center" >
<TextView
android:id="@+id/titleWelcomeFragment1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@color/colorPrimary"
android:textSize="30sp"
android:textStyle="bold"/>
<TextView
android:id="@+id/messageWelcomeFragment1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@color/colorPrimary"
android:textSize="20sp"
android:textStyle="normal"
android:paddingLeft="20dp"
android:paddingRight="20dp"/>
</LinearLayout>
推荐答案
您应该创建一个扩展FragmentPagerAdapter的适配器:
You should create an adapter that extends FragmentPagerAdapter:
private class CustomPagerAdapter extends FragmentPagerAdapter {
public CustomPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new FragmentForInstruction1();
case 1:
return new FragmentForInstruction2();
case 2:
return new FragmentForInstruction3();
case 3:
return new FragmentForInstruction4();
default:
return new FragmentForInstruction1();
}
}
@Override
public int getCount() {
return 4;
}
}
创建实例时，传递getChildFragmentManager()而不是getSupportFragmentManager():
While crating an instance of it, pass the getChildFragmentManager() instead of getSupportFragmentManager():
viewPager.setAdapter(new CustomPagerAdapter(getChildFragmentManager()));
这篇关于自定义对话框中的ViewPager的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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