我在以下行上遇到强制关闭错误:
view = inflater.inflate(R.layout.video_list_item, parent, false);
当将java类设置为 Activity 时，好像我的应用正在寻找 View (如我在Google所使用的示例中所找到的那样)。我正在使用YouTube API for Android代码中的VideoListDemoActivity.java这里:
https://code.google.com/p/youtube-api-samples/source/browse/android-player/src/com/examples/youtubeapidemo/VideoListDemoActivity.java
我只是想知道两件事:
一种。为什么未将其设置为YouTube API中的 View
b。我应该怎么做才能使代码在我的应用中正常运行，以避免出现强制关闭错误
本地消息片段:
@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;
}
LOGCAT:
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:
https://code.google.com/p/youtube-api-samples/source/browse/android-player/src/com/examples/youtubeapidemo/VideoListDemoActivity.java
补充说明:
它崩溃了:
YouTubeThumbnailView thumbnail = (YouTubeThumbnailView) view.findViewById(R.id.thumbnail);
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);
}
}
最佳答案
您的布局文件夹中是否有一个名为video_list_item的布局？如果不是，那就是这里的问题。如果您希望使用android提供的示例布局，则需要用R.layout.video_list_item替换android.R.layout.video_list_item(我不确定android是否提供此布局...只是一种预感)。
关于java - view = inflater.inflate(R.layout.video_list_item，parent，false);导致强制关闭错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20131225/