Question

我正在实施一个照片查看器，允许用户从缩略图以全屏模式查看照片。我目前的做法是向WindowManager添加夸大的视图。在膨胀的视图中，有ViewPager允许用户切换图像。我收到错误“java.lang.IllegalArgumentException：找不到id的视图”

以下是详细信息（在openPhoto方法中，setActivity方法和viewPager的设置适配器中的视图夸大了）：

public class PhotoViewer {
private static final String TAG = "PhotoViewer";
private Activity parentActivity;
private FrameLayoutTouchListener windowView;
private RelativeLayout containerView;
private WindowManager.LayoutParams windowLayoutParams;
private PhotoViewerAdapter photoAdapter;
private ViewPager viewPager;

public PhotoViewer() {
    super();
}

private static volatile PhotoViewer Instance = null;

/*inflate view here*/
public void setParentActivity(Activity activity) {
    if (parentActivity == activity) {
        return;
    }
    parentActivity = activity;
    windowView = new FrameLayout(activity);
    containerView = (RelativeLayout) LayoutInflater.from(activity)
            .inflate(R.layout.fragment_photo_viewer, null);
    containerView.setFocusable(false);
    windowView.addView(containerView);

    windowLayoutParams = new WindowManager.LayoutParams();
    windowLayoutParams.height = WindowManager.LayoutParams.MATCH_PARENT;
    windowLayoutParams.format = PixelFormat.TRANSLUCENT;
    windowLayoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
    windowLayoutParams.gravity = Gravity.TOP;
    windowLayoutParams.type = WindowManager.LayoutParams.LAST_APPLICATION_WINDOW;
    windowLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;

    viewPager = (ViewPager) containerView.findViewById(R.id.photo_viewer_view_pager);

}


/*set data and adapter for viewPager here*/
public void openPhoto (PhotoSupporter photoSupporter, int position){
    try {
        if (windowView.getParent() != null) {
            WindowManager wm = (WindowManager) parentActivity.getSystemService(Context.WINDOW_SERVICE);
            wm.removeView(windowView);
        }
    } catch (Exception e) {
        Log.v(TAG, e.getMessage());
    }
    WindowManager wm = (WindowManager) parentActivity.getSystemService(Context.WINDOW_SERVICE);
    wm.addView(windowView, windowLayoutParams);

    this.photoSupporter = photoSupporter;        
    photoAdapter = new PhotoViewerAdapter(((FragmentActivity) parentActivity).getSupportFragmentManager(), photoSupporter);
    viewPager.storeAdapter(photoAdapter);
    viewPager.setCurrentItem(position);
}



/**
 * Larger PhotoView
 * 
 * 
 * **/

public static class PhotoViewerAdapter extends FragmentStatePagerAdapter {

    private PhotoSupporter photoSupporter;


    public PhotoViewerAdapter(FragmentManager fm, PhotoSupporter photoSupporter) {
        super(fm);
        this.photoSupporter = photoSupporter;
    }

    @Override
    public Fragment getItem(int position) {
        String src = null;
        // get photo src
        return PhotoViewFragment.newInstance(src);
    }

    @Override
    public int getCount() {
        Log.w(TAG, "size in adapter: " + photoSupporter.getSize());
        return photoSupporter.getSize();
    }

}



public static class PhotoViewFragment extends Fragment {

    private String imagePath;

    public PhotoViewFragment() {

    }

    public static PhotoViewFragment newInstance(String imagePath) {
        PhotoViewFragment previewFragment = new PhotoViewFragment();
        // put data
        Bundle bundle = new Bundle();
        bundle.putString("IMAGE_PATH",
                imagePath);
        previewFragment.setArguments(bundle);
        return previewFragment;

    }

    /**
     * When creating, retrieve this instance's number from its arguments.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        imagePath = getArguments() != null ? getArguments().getString(
                "IMAGE_PATH") : "";
        Log.d("onCreate", imagePath);
    }

    /**
     * The Fragment's UI is just a simple text view showing its instance
     * number.
     */
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        ImageView imageView = new ImageView(getActivity());
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams
                (LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
        imageView.setLayoutParams(lp);
        // set image by Picasso
        Picasso picassoInstance = Picasso.with(getActivity());
        picassoInstance.setIndicatorsEnabled(true);
        picassoInstance.load(new File(imagePath))
                .error(R.drawable.ic_picture_placeholder_light2)
                .fit()
                .centerInside()
                .into(imageView);
        return imageView;
    }

}


}

这里是调用PhotoViewer方法的地方：

public class PhotosFragment  extends Fragment implements PhotoSupporter{
/*
....
*/


@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    showLoading();
    photosGridview = (GridView) findViewById(R.id.group_photos_gridview);
    if (listPhotos == null) {
        listPhotos = new ArrayList<Photo>();

    }
    photoListAdapter = new PhotoListAdapter(listPhotos, getActivity());
    photosGridview.setAdapter(photoListAdapter);
    photosGridview.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            PhotoViewer.getInstance().setParentActivity(getActivity());
            PhotoViewer.getInstance().openPhoto(PhotosFragment.this, position);
        }
    });
}



@Override
public int getSize() {
    return listPhotos == null ? 0 : listPhotos.size();
}

@Override
public Photo getPhotoItem(int position) {
    return listPhotos.get(position);
}
}

这是视图的布局，包含viewPager：

<?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="wrap_content"
android:orientation="vertical" >

<android.support.v4.view.ViewPager
    android:id="@+id/photo_viewer_view_pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/dark_background" >
</android.support.v4.view.ViewPager>

这是logcat：

01-14 14:12:55.271: E/AndroidRuntime(11435): FATAL EXCEPTION: main
01-14 14:12:55.271: E/AndroidRuntime(11435): java.lang.IllegalArgumentException: No view found for id 0x7f0b00df (com.newsfeed.android:id/photo_viewer_view_pager) for fragment PhotoViewFragment{537b5ec4 #8 id=0x7f0b00df}
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:903)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.ja va:1088)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
 01-14 14:12:55.271: E/AndroidRuntime(11435):   at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentSta tePagerAdapter.java:163)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.view.ViewPager.populate(ViewPager.java:1064)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.view.ViewPager.populate(ViewPager.java:911)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1432)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.View.measure(View.java:15172)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.View.measure(View.java:15172)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at  android.view.View.measure(View.java:15172)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.Choreographer.doCallbacks(Choreographer.java:555)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.Choreographer.doFrame(Choreographer.java:525)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.os.Handler.handleCallback(Handler.java:615)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.os.Handler.dispatchMessage(Handler.java:92)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.os.Looper.loop(Looper.java:137)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at android.app.ActivityThread.main(ActivityThread.java:4745)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at java.lang.reflect.Method.invokeNative(Native Method)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at java.lang.reflect.Method.invoke(Method.java:511)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-14 14:12:55.271: E/AndroidRuntime(11435):    at dalvik.system.NativeStart.main(Native Method)

针对此问题的任何解决方案？非常感谢你们！

Answer 1

我认为这是因为您是通过WindowManager直接添加ViewPager。这样做意味着它不会成为正常的Activity视图层次结构的一部分（即装饰视图的子级）。 Activity.findViewById（使用装饰视图作为根遍历视图）将无法找到您的ViewPager。

ViewPager适配器创建Fragments并使用ViewPager（id）作为容器。在创建片段时，Android会通过Activity.findViewById查找此容器，但无法找到它，因此会抛出此异常。

听起来你想要一些出现在缩略图网格顶部的视图。您可以使用properly styled对话框（片段）来实现此目的。实施该观点的具体细节最好作为一个单独的问题提出。

Answer 2

我认为你只是错过了一个小错误。而不是这个。

viewPager =（ViewPager）containerView.findViewById（ R.id.photo_viewer_view_pager ）;

做

viewPager =（ViewPager）containerView.findViewById（ R.id.photo_viewer_viewpager ）;

我认为你在viewpager中使用了错误的id。希望它能解决你的问题。

Answer 3

我认为你在findviewById（）之后在setParenActivity（）中膨胀视图，这就是它没有得到视图的原因。

WindowManager添加的视图上的ViewPager获取“java.lang.IllegalArgumentException：找不到id的视图”

3 个答案: