我遇到了困扰我多日的问题。
在主活动中有一个 ViewPager
,它作为选项卡片段包含 3 个 Fragment
。在 第一个 片段中有一个 ListView
,其中包含一些视图,并且最重要的是另一个 ViewPager
。我想在子 ViewPager
中放置一些照片,并在此处使用更多的片段。
现在出现了问题:
当停止 第一个 Fragment
(在父 ViewPager
中看到第三个片段)并恢复(用户切换到 第二个 片段)时,应用程序崩溃并且调试器显示:
java.lang.IllegalArgumentException: No view found for id 0x7f05008b (com.example.viewpager:id/sub_viewpager) for fragment ScreenSlidePageFragment
我已经使用了
getChildFragmentManager()
,因为这是嵌套片段的情况。以下是与父ViewPager中第一个片段对应的列表适配器的关键代码:
@Override
public View getView(int position, View convertView, ViewGroup parent) {
int type = getItemViewType(position);
switch (type) {
case TYPE_BANNER:
if (convertView == null) {
convertView = mBannerView.getBannerView(parent);
}
mBannerView.update(convertView);
break;
case TYPE_ITEM:
break;
}
return convertView;
}
这是
mBannerView
的代码:public class BannerView {
private static final DisplayImageOptions IMAGE_OPTIONS_SCALE_STRETCHED =
new DisplayImageOptions.Builder()
.cacheInMemory()
.cacheOnDisc()
.imageScaleType(ImageScaleType.EXACTLY_STRETCHED)
.build();
private FragmentActivity mActivity;
private Fragment mFragment;
private List<Banner> mBanners;
private ScreenSlidePagerAdapter mPagerAdapter;
private ViewPager mViewPager;
public BannerView(FragmentActivity activity, Fragment fragment) {
mActivity = activity;
mFragment = fragment;
}
public void update(View convertView) {
mViewPager = (ViewPager) convertView;
if (mBanners != null && !mBanners.isEmpty()) {
if (mPagerAdapter == null) {
mPagerAdapter = new ScreenSlidePagerAdapter(mFragment.getChildFragmentManager());
mViewPager.setAdapter(mPagerAdapter);
}
}
mViewPager.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mOnBannerClickListener != null) {
mOnBannerClickListener.onBannerClick();
}
}
});
}
class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
public ScreenSlidePagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return new ScreenSlidePageFragment(mBanners.get(position).getImageUrl());
}
@Override
public int getCount() {
return mBanners == null ? 0 : mBanners.size();
}
}
class ScreenSlidePageFragment extends Fragment {
private String mUrl;
ScreenSlidePageFragment(String url) {
super();
mUrl = url;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.item_banner, container, false);
if (view != null) {
ImageView imageView = (ImageView) view.findViewById(R.id.item_banner_image);
imageView.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
ImageLoader.getInstance().displayImage(mUrl, imageView, IMAGE_OPTIONS_SCALE_STRETCHED);
}
return view;
}
}
}
这是详细的错误列表:
11-10 18:12:19.217 1444-1444/? E/MessageQueue-JNI﹕ java.lang.IllegalArgumentException: No view found for id 0x7f05008b (com.example.viewpager:id/sub_viewpager) for fragment ScreenSlidePageFragment{428d8ea0 #0 id=0x7f05008b}
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:919)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1086)
at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1884)
at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1514)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)
at android.support.v4.app.FragmentManagerImpl.attachFragment(FragmentManager.java:1280)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:672)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
at android.support.v4.view.ViewPager$3.run(ViewPager.java:244)
at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:1761)
at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:1896)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1854)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1912)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1912)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2211)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1912)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2228)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1471)
at android.app.Activity.dispatchTouchEvent(Activity.java:2424)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2176)
at android.view.View.dispatchPointerEvent(View.java:7571)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3883)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3778)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3483)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3540)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3429)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3398)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3406)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3379)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5419)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5399)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5370)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5493)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:182)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:132)
at android.os.Looper.loop(Looper.java:124)
at android.app.ActivityThread.main(ActivityThread.java:5289)
at java.lang