我在以下行出现强制关闭错误：
view = inflater.inflate(R.layout.video_list_item, parent, false);
当 java 类设置为活动时，我的应用程序似乎正在寻找一个视图（正如我在 Google 使用的示例中找到的那样。）我正在使用 YouTube API 中的 VideoListDemoActivity.java for Android 代码找到这里：
我只是想知道两件事：
一个。为什么这不是在 YouTube API 中设置为视图 b。我可以做些什么来让代码在我的应用程序中工作以避免这种强制关闭错误
本地源代码段：
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
VideoEntry entry = entries.get(position);
// There are three cases here
if (view == null) {
// 1) The view has not yet been created - we need to initialize the YouTubeThumbnailView.
view = inflater.inflate(R.layout.video_list_item, parent, false);
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
thumbnail.setTag(entry.videoId);
thumbnail.initialize(DeveloperKey.DEVELOPER_KEY, thumbnailListener);
} else {
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
YouTubeThumbnailLoader loader = thumbnailViewToLoaderMap.get(thumbnail);
if (loader == null) {
// 2) The view is already created, and is currently being initialized. We store the
// current videoId in the tag.
thumbnail.setTag(entry.videoId);
} else {
// 3) The view is already created and already initialized. Simply set the right videoId
// on the loader.
thumbnail.setImageResource(R.drawable.loading_thumbnail);
loader.setVideo(entry.videoId);
}
}
TextView label = ((TextView) view.findViewById(R.id.text));
label.setText(entry.text);
label.setVisibility(labelsVisible ? View.VISIBLE : View.GONE);
return view;
}
日志猫：
11-21 14:39:52.837: D/ActivityThread(26592): setTargetHeapUtilization:0.25
11-21 14:39:52.837: D/ActivityThread(26592): setTargetHeapIdealFree:8388608
11-21 14:39:52.837: D/ActivityThread(26592): setTargetHeapConcurrentStart:2097152
11-21 14:39:53.067: D/AbsListView(26592): Get MotionRecognitionManager
11-21 14:39:53.367: I/Adreno200-EGLSUB(26592): <ConfigWindowMatch:2087>: Format RGBA_8888.
11-21 14:39:53.387: E/(26592): <s3dReadConfigFile:75>: Can't open file for reading
11-21 14:39:53.387: E/(26592): <s3dReadConfigFile:75>: Can't open file for reading
11-21 14:39:53.387: W/dalvikvm(26592): threadid=1: thread exiting with uncaught exception (group=0x41800438)
11-21 14:39:53.407: E/AndroidRuntime(26592): FATAL EXCEPTION: main
11-21 14:39:53.407: E/AndroidRuntime(26592): java.lang.NullPointerException
11-21 14:39:53.407: E/AndroidRuntime(26592): at com.example.idg2.VideoListDemoActivity$PageAdapter.getView(VideoListDemoActivity.java:295)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.AbsListView.obtainView(AbsListView.java:2453)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.ListView.makeAndAddView(ListView.java:1775)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.ListView.fillDown(ListView.java:678)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.ListView.fillFromTop(ListView.java:739)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.ListView.layoutChildren(ListView.java:1628)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.AbsListView.onLayout(AbsListView.java:2288)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.LinearLayout.onLayout(LinearLayout.java:1426)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.View.layout(View.java:13957)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2003)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1824)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4553)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.Choreographer.doFrame(Choreographer.java:525)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.os.Handler.handleCallback(Handler.java:615)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.os.Handler.dispatchMessage(Handler.java:92)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.os.Looper.loop(Looper.java:137)
11-21 14:39:53.407: E/AndroidRuntime(26592): at android.app.ActivityThread.main(ActivityThread.java:4950)
11-21 14:39:53.407: E/AndroidRuntime(26592): at java.lang.reflect.Method.invokeNative(Native Method)
11-21 14:39:53.407: E/AndroidRuntime(26592): at java.lang.reflect.Method.invoke(Method.java:511)
11-21 14:39:53.407: E/AndroidRuntime(26592): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
11-21 14:39:53.407: E/AndroidRuntime(26592): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
11-21 14:39:53.407: E/AndroidRuntime(26592): at dalvik.system.NativeStart.main(Native Method)
11-21 14:40:29.967: D/ActivityThread(26730): setTargetHeapUtilization:0.25
11-21 14:40:29.967: D/ActivityThread(26730): setTargetHeapIdealFree:8388608
11-21 14:40:29.967: D/ActivityThread(26730): setTargetHeapConcurrentStart:2097152
11-21 14:40:30.187: D/AbsListView(26730): Get MotionRecognitionManager
11-21 14:40:30.467: I/Adreno200-EGLSUB(26730): <ConfigWindowMatch:2087>: Format RGBA_8888.
11-21 14:40:30.487: E/(26730): <s3dReadConfigFile:75>: Can't open file for reading
11-21 14:40:30.497: E/(26730): <s3dReadConfigFile:75>: Can't open file for reading
11-21 14:40:30.507: W/dalvikvm(26730): threadid=1: thread exiting with uncaught exception (group=0x41800438)
11-21 14:40:30.507: E/AndroidRuntime(26730): FATAL EXCEPTION: main
11-21 14:40:30.507: E/AndroidRuntime(26730): java.lang.NullPointerException
11-21 14:40:30.507: E/AndroidRuntime(26730): at com.example.idg2.VideoListDemoActivity$PageAdapter.getView(VideoListDemoActivity.java:299)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.AbsListView.obtainView(AbsListView.java:2453)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.ListView.makeAndAddView(ListView.java:1775)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.ListView.fillDown(ListView.java:678)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.ListView.fillFromTop(ListView.java:739)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.ListView.layoutChildren(ListView.java:1628)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.AbsListView.onLayout(AbsListView.java:2288)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1655)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1513)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.LinearLayout.onLayout(LinearLayout.java:1426)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.View.layout(View.java:13957)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewGroup.layout(ViewGroup.java:4374)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2003)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1824)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4553)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.Choreographer.doFrame(Choreographer.java:525)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.os.Handler.handleCallback(Handler.java:615)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.os.Handler.dispatchMessage(Handler.java:92)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.os.Looper.loop(Looper.java:137)
11-21 14:40:30.507: E/AndroidRuntime(26730): at android.app.ActivityThread.main(ActivityThread.java:4950)
11-21 14:40:30.507: E/AndroidRuntime(26730): at java.lang.reflect.Method.invokeNative(Native Method)
11-21 14:40:30.507: E/AndroidRuntime(26730): at java.lang.reflect.Method.invoke(Method.java:511)
11-21 14:40:30.507: E/AndroidRuntime(26730): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
11-21 14:40:30.507: E/AndroidRuntime(26730): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
11-21 14:40:30.507: E/AndroidRuntime(26730): at dalvik.system.NativeStart.main(Native Method)
原始来源：
补充说明：
它在线崩溃：
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
完整来源：
/**
* An Activity showing how to manage multiple YouTubeThumbnailViews in an adapter for display
* in a List. When the list items are clicked, the video is played by using a YouTubePlayerFragment.
* <p>
* The demo supports custom fullscreen and transitioning between portrait and landscape without
* rebuffering.
*/
public final class VideoListDemoActivity extends Activity implements OnFullscreenListener {
/** The duration of the animation sliding up the video in portrait. */
private static final int ANIMATION_DURATION_MILLIS = 300;
/** The padding between the video list and the video in landscape orientation. */
private static final int LANDSCAPE_VIDEO_PADDING_DP = 5;
private VideoListFragment listFragment;
private VideoFragment videoFragment;
private View videoBox;
private View closeButton;
private boolean isFullscreen;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video_list_demo);
listFragment = (VideoListFragment) getFragmentManager().findFragmentById(R.id.list_fragment);
videoFragment =
(VideoFragment) getFragmentManager().findFragmentById(R.id.video_fragment_container);
videoBox = findViewById(R.id.video_box);
closeButton = findViewById(R.id.close_button);
videoBox.setVisibility(View.INVISIBLE);
layout();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
layout();
}
@Override
public void onFullscreen(boolean isFullscreen) {
this.isFullscreen = isFullscreen;
layout();
}
/**
* Sets up the layout programatically for the three different states. Portrait, landscape or
* fullscreen+landscape. This has to be done programmatically because we handle the orientation
* changes ourselves in order to get fluent fullscreen transitions, so the xml layout resources
* do not get reloaded.
*/
private void layout() {
boolean isPortrait =
getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
listFragment.getView().setVisibility(isFullscreen ? View.GONE : View.VISIBLE);
listFragment.setLabelVisibility(isPortrait);
closeButton.setVisibility(isPortrait ? View.VISIBLE : View.GONE);
if (isFullscreen) {
videoBox.setTranslationY(0); // Reset any translation that was applied in portrait.
setLayoutSize(videoFragment.getView(), MATCH_PARENT, MATCH_PARENT);
setLayoutSizeAndGravity(videoBox, MATCH_PARENT, MATCH_PARENT, Gravity.TOP | Gravity.LEFT);
} else if (isPortrait) {
setLayoutSize(listFragment.getView(), MATCH_PARENT, MATCH_PARENT);
setLayoutSize(videoFragment.getView(), MATCH_PARENT, WRAP_CONTENT);
setLayoutSizeAndGravity(videoBox, MATCH_PARENT, WRAP_CONTENT, Gravity.BOTTOM);
} else {
videoBox.setTranslationY(0); // Reset any translation that was applied in portrait.
int screenWidth = dpToPx(getResources().getConfiguration().screenWidthDp);
setLayoutSize(listFragment.getView(), screenWidth / 4, MATCH_PARENT);
int videoWidth = screenWidth - screenWidth / 4 - dpToPx(LANDSCAPE_VIDEO_PADDING_DP);
setLayoutSize(videoFragment.getView(), videoWidth, WRAP_CONTENT);
setLayoutSizeAndGravity(videoBox, videoWidth, WRAP_CONTENT,
Gravity.RIGHT | Gravity.CENTER_VERTICAL);
}
}
public void onClickClose(@SuppressWarnings("unused") View view) {
listFragment.getListView().clearChoices();
listFragment.getListView().requestLayout();
videoFragment.pause();
videoBox.animate()
.translationYBy(videoBox.getHeight())
.setDuration(ANIMATION_DURATION_MILLIS)
.withEndAction(new Runnable() {
@Override
public void run() {
videoBox.setVisibility(View.INVISIBLE);
}
});
}
/**
* A fragment that shows a static list of videos.
*/
public static final class VideoListFragment extends ListFragment {
private static final List<VideoEntry> VIDEO_LIST;
static {
List<VideoEntry> list = new ArrayList<VideoEntry>();
list.add(new VideoEntry("YouTube Collection", "Y_UmWdcTrrc"));
list.add(new VideoEntry("GMail Tap", "1KhZKNZO8mQ"));
list.add(new VideoEntry("Chrome Multitask", "UiLSiqyDf4Y"));
list.add(new VideoEntry("Google Fiber", "re0VRK6ouwI"));
list.add(new VideoEntry("Autocompleter", "blB_X38YSxQ"));
list.add(new VideoEntry("GMail Motion", "Bu927_ul_X0"));
list.add(new VideoEntry("Translate for Animals", "3I24bSteJpw"));
VIDEO_LIST = Collections.unmodifiableList(list);
}
private PageAdapter adapter;
private View videoBox;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
adapter = new PageAdapter(getActivity(), VIDEO_LIST);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
videoBox = getActivity().findViewById(R.id.video_box);
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
setListAdapter(adapter);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
String videoId = VIDEO_LIST.get(position).videoId;
VideoFragment videoFragment =
(VideoFragment) getFragmentManager().findFragmentById(R.id.video_fragment_container);
videoFragment.setVideoId(videoId);
// The videoBox is INVISIBLE if no video was previously selected, so we need to show it now.
if (videoBox.getVisibility() != View.VISIBLE) {
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
// Initially translate off the screen so that it can be animated in from below.
videoBox.setTranslationY(videoBox.getHeight());
}
videoBox.setVisibility(View.VISIBLE);
}
// If the fragment is off the screen, we animate it in.
if (videoBox.getTranslationY() > 0) {
videoBox.animate().translationY(0).setDuration(ANIMATION_DURATION_MILLIS);
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
adapter.releaseLoaders();
}
public void setLabelVisibility(boolean visible) {
adapter.setLabelVisibility(visible);
}
}
/**
* Adapter for the video list. Manages a set of YouTubeThumbnailViews, including initializing each
* of them only once and keeping track of the loader of each one. When the ListFragment gets
* destroyed it releases all the loaders.
*/
private static final class PageAdapter extends BaseAdapter {
private final List<VideoEntry> entries;
private final List<View> entryViews;
private final Map<YouTubeThumbnailView, YouTubeThumbnailLoader> thumbnailViewToLoaderMap;
private final LayoutInflater inflater;
private final ThumbnailListener thumbnailListener;
private boolean labelsVisible;
public PageAdapter(Context context, List<VideoEntry> entries) {
this.entries = entries;
entryViews = new ArrayList<View>();
thumbnailViewToLoaderMap = new HashMap<YouTubeThumbnailView, YouTubeThumbnailLoader>();
inflater = LayoutInflater.from(context);
thumbnailListener = new ThumbnailListener();
labelsVisible = true;
}
public void releaseLoaders() {
for (YouTubeThumbnailLoader loader : thumbnailViewToLoaderMap.values()) {
loader.release();
}
}
public void setLabelVisibility(boolean visible) {
labelsVisible = visible;
for (View view : entryViews) {
view.findViewById(R.id.text).setVisibility(visible ? View.VISIBLE : View.GONE);
}
}
@Override
public int getCount() {
return entries.size();
}
@Override
public VideoEntry getItem(int position) {
return entries.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
VideoEntry entry = entries.get(position);
// There are three cases here
if (view == null) {
// 1) The view has not yet been created - we need to initialize the YouTubeThumbnailView.
view = inflater.inflate(R.layout.video_list_item, parent, false);
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
thumbnail.setTag(entry.videoId);
thumbnail.initialize(DeveloperKey.DEVELOPER_KEY, thumbnailListener);
} else {
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
YouTubeThumbnailLoader loader = thumbnailViewToLoaderMap.get(thumbnail);
if (loader == null) {
// 2) The view is already created, and is currently being initialized. We store the
// current videoId in the tag.
thumbnail.setTag(entry.videoId);
} else {
// 3) The view is already created and already initialized. Simply set the right videoId
// on the loader.
thumbnail.setImageResource(R.drawable.loading_thumbnail);
loader.setVideo(entry.videoId);
}
}
TextView label = ((TextView) view.findViewById(R.id.text));
label.setText(entry.text);
label.setVisibility(labelsVisible ? View.VISIBLE : View.GONE);
return view;
}
private final class ThumbnailListener implements
YouTubeThumbnailView.OnInitializedListener,
YouTubeThumbnailLoader.OnThumbnailLoadedListener {
@Override
public void onInitializationSuccess(
YouTubeThumbnailView view, YouTubeThumbnailLoader loader) {
loader.setOnThumbnailLoadedListener(this);
thumbnailViewToLoaderMap.put(view, loader);
view.setImageResource(R.drawable.loading_thumbnail);
String videoId = (String) view.getTag();
loader.setVideo(videoId);
}
@Override
public void onInitializationFailure(
YouTubeThumbnailView view, YouTubeInitializationResult loader) {
view.setImageResource(R.drawable.no_thumbnail);
}
@Override
public void onThumbnailLoaded(YouTubeThumbnailView view, String videoId) {
}
@Override
public void onThumbnailError(YouTubeThumbnailView view, ErrorReason errorReason) {
view.setImageResource(R.drawable.no_thumbnail);
}
}
}
public static final class VideoFragment extends YouTubePlayerFragment
implements OnInitializedListener {
private YouTubePlayer player;
private String videoId;
public static VideoFragment newInstance() {
return new VideoFragment();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initialize(DeveloperKey.DEVELOPER_KEY, this);
}
@Override
public void onDestroy() {
if (player != null) {
player.release();
}
super.onDestroy();
}
public void setVideoId(String videoId) {
if (videoId != null && !videoId.equals(this.videoId)) {
this.videoId = videoId;
if (player != null) {
player.cueVideo(videoId);
}
}
}
public void pause() {
if (player != null) {
player.pause();
}
}
@Override
public void onInitializationSuccess(Provider provider, YouTubePlayer player, boolean restored) {
this.player = player;
player.addFullscreenControlFlag(YouTubePlayer.FULLSCREEN_FLAG_CUSTOM_LAYOUT);
player.setOnFullscreenListener((VideoListDemoActivity) getActivity());
if (!restored && videoId != null) {
player.cueVideo(videoId);
}
}
@Override
public void onInitializationFailure(Provider provider, YouTubeInitializationResult result) {
this.player = null;
}
}
private static final class VideoEntry {
private final String text;
private final String videoId;
public VideoEntry(String text, String videoId) {
this.text = text;
this.videoId = videoId;
}
}
// Utility methods for layouting.
private int dpToPx(int dp) {
return (int) (dp * getResources().getDisplayMetrics().density + 0.5f);
}
private static void setLayoutSize(View view, int width, int height) {
LayoutParams params = view.getLayoutParams();
params.width = width;
params.height = height;
view.setLayoutParams(params);
}
private static void setLayoutSizeAndGravity(View view, int width, int height, int gravity) {
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) view.getLayoutParams();
params.width = width;
params.height = height;
params.gravity = gravity;
view.setLayoutParams(params);
}
}