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我有一組mp4視頻流入VideoView。視圖尋呼機用於在視頻之間滑動。在視頻瀏覽器內的視頻視圖中實時流式傳輸導致空白屏幕
問題：
當滑動視圖尋呼機，它示出了第一和第二頁的視頻完美。但是，當滑動到達第三頁時，設備屏幕變爲空白，我似乎無法再滑動頁面。
工作代碼：
public class VideoActivity extends Activity implements OnClickListener {
private ViewPager videoViewPager;
private CirclePageIndicator videoViewPagerIndicator;
private VideoViewPagerAdapter videoViewPagerAdapter;
private VideoView videoView;
private Context context;
private ArrayList<VideoItem> videoList = new ArrayList<VideoItem>(8);
private int pageIndicatorRadius = 5;
private ProgressBar progressBar = null;
private MediaController mediaController = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/* Flag to set hide the status bar */
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
setContentView(R.layout.activity_main);
context = this;
/* Get the video item object list */
videoList = getVideoList();
/* Adapter for the view pager */
videoViewPagerAdapter = new videoViewPagerAdapter();
videoViewPager = (ViewPager) findViewById(R.id.video_viewpager);
videoViewPager.setCurrentItem(0);
videoViewPager.setAdapter(videoViewPagerAdapter);
// videoViewPager.setOffscreenPageLimit(3);
/*
* Page view indicator . Using the external page view indicator library
*/
videoViewPagerIndicator = (CirclePageIndicator) findViewById(R.id.video_pageindicator);
videoViewPagerIndicator.setViewPager(videoViewPager);
videoViewPagerIndicator.setFillColor(getResources().getColor(
R.color.translucent_blue));
videoViewPagerIndicator.setRadius(pageIndicatorRadius);
}
private class videoViewPagerAdapter extends PagerAdapter {
/* Method which returns the number of page viewers */
@Override
public int getCount() {
return videoList.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return (view == object);
}
@Override
public Object instantiateItem(ViewGroup collection, int position) {
View view = null;
LayoutInflater inflater = (LayoutInflater) collection.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// Inflater the xml layout which should be added to the page viewer
view = inflater.inflate(R.layout.video, null);
// Create an object of Video Item from the video list
VideoItem videoItemObject = videoList.get(position);
/* Initialize video player */
videoView = (VideoView) view
.findViewById(R.id.video_view);
progressBar = (ProgressBar) view
.findViewById(R.id.video_progressbar);
Uri video = Uri.parse(videoItemObject.getUrl());
mediaController = new MediaController(context);
mediaController.setAnchorView(videoView);
videoView.setMediaController(mediaController);
videoView.setVideoURI(video);
videoView.setKeepScreenOn(true);
videoView.requestFocus();
videoView.setOnErrorListener(new OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Toast.makeText(context, "Error occured", Toast.LENGTH_SHORT)
.show();
return false;
}
});
videoView.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer arg0) {
progressBar.setVisibility(View.GONE);
videoView.start();
}
});
videoView
.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
videoView.stopPlayback();
}
});
videoView.setSoundEffectsEnabled(true);
((ViewPager) collection).addView(view, 0);
return view;
}
@Override
public void destroyItem(ViewGroup collection, int position, Object view) {
/** Stop playing the video on activity destroyed */
try {
videoView.stopPlayback();
} catch (Exception e) {
Log.i("Error :", "Closing video");
}
((ViewPager) collection).removeView((View) view);
}
}
@Override
protected void onDestroy() {
try {
videoView.stopPlayback();
} catch (Exception e) {
Log.i("Error :", "Closing application");
}
super.onDestroy();
}
@Override
protected void onPause() {
try {
videoView.pause();
} catch (Exception e) {
Log.i("Error :", "Closing application");
}
super.onPause();
}
/* Function to create a video item object */
public VideoItem createVideoItem(String title, String url) {
VideoItem videoItem = new VideoItem();
videoItem.setTitle(title);
videoItem.setUrl(url);
return videoItem;
}
/* Function that returns a list of video item objects */
public ArrayList<VideoItem> getvideoList() {
ArrayList<VideoItem> video = new ArrayList<VideoItem>(8);
video.add(createVideoItem("A",
"http://10.0.1.15:8081/media/big_buck.mp4"));
video.add(createVideoItem("B",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
video.add(createVideoItem("C",
"http://10.0.1.15:8081/media/big_buck.mp4"));
video.add(createVideoItem("D",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
video.add(createVideoItem("E",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
video.add(createVideoItem("F",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
video.add(createVideoItem("G",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
video.add(createVideoItem("H",
"http://10.0.1.15:8081/media/big_buck_bunny.mp4"));
return video;
}
}
的logcat：
04-05 12:45:27.139: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:27.826: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:30.873: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:30.873: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:32.787: I/MediaPlayer(10963): path is null
04-05 12:45:32.787: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:32.826: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:32.826: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:33.444: D/MediaPlayer(10963): getMetadata
04-05 12:45:33.444: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:33.490: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:33.584: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:34.514: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:36.662: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:36.662: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:39.248: I/MediaPlayer(10963): path is null
04-05 12:45:39.248: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:39.295: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:39.303: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:39.944: D/MediaPlayer(10963): getMetadata
04-05 12:45:39.951: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:39.959: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:40.139: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:42.701: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:42.709: E/libEGL(10963): call to OpenGL ES API with no current context (logged once per thread)
04-05 12:45:42.709: W/HardwareRenderer(10963): EGL error: EGL_BAD_SURFACE
04-05 12:45:42.733: W/HardwareRenderer(10963): Mountain View, we've had a problem here. Switching back to software rendering.
04-05 12:45:44.701: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:44.701: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:45.444: D/dalvikvm(10963): GC_CONCURRENT freed 318K, 12% free 7922K/8967K, paused 3ms+6ms, total 53ms
04-05 12:45:45.740: I/MediaPlayer(10963): path is null
04-05 12:45:45.740: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:45.834: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:45.834: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:46.420: D/MediaPlayer(10963): getMetadata
04-05 12:45:46.428: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:46.436: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:46.592: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:49.006: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:49.061: I/MediaPlayer(10963): path is null
04-05 12:45:49.061: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:49.162: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:49.162: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:49.772: D/MediaPlayer(10963): getMetadata
04-05 12:45:49.772: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:49.795: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:49.990: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:50.514: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:50.592: I/MediaPlayer(10963): path is null
04-05 12:45:50.592: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:51.076: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:51.076: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:51.311: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:51.311: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:51.381: D/MediaPlayer(10963): getMetadata
04-05 12:45:51.381: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:51.436: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:51.709: I/MediaPlayer(10963): sendBroadcast android.media.IMediaPlayer.videoexist
04-05 12:45:51.834: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:45:51.912: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:51.912: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:45:59.506: I/MediaPlayer(10963): path is null
04-05 12:45:59.506: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:59.561: I/MediaPlayer(10963): path is null
04-05 12:45:59.561: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:45:59.662: D/dalvikvm(10963): GC_CONCURRENT freed 338K, 12% free 8045K/9095K, paused 13ms+9ms, total 77ms
04-05 12:45:59.678: I/MediaPlayer(10963): path is null
04-05 12:45:59.678: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:46:00.311: E/MediaPlayer(10963): stop called in state 4
04-05 12:46:00.311: E/MediaPlayer(10963): error (-38, 0)
04-05 12:46:00.444: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:46:00.451: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:46:00.475: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:46:00.475: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:46:00.483: D/MediaPlayer(10963): getMetadata
04-05 12:46:00.483: D/MediaPlayer(10963): getMetadata
04-05 12:46:00.483: W/MediaPlayer(10963): mediaplayer went away with unhandled events
04-05 12:46:01.467: I/MediaPlayer(10963): path is null
04-05 12:46:01.467: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:46:01.498: I/MediaPlayer(10963): path is null
04-05 12:46:01.498: D/MediaPlayer(10963): Couldn't open file on client side, trying server side
04-05 12:46:01.756: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:46:01.756: E/SpannableStringBuilder(10963): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
04-05 12:46:02.061: E/MediaPlayer(10963): stop called in state 4
04-05 12:46:02.061: E/MediaPlayer(10963): error (-38, 0)
04-05 12:46:02.123: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:46:02.186: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:46:02.201: W/SurfaceView(10963): CHECK surface infomation creating=false formatChanged=false sizeChanged=false visible=false visibleChanged=true surfaceChanged=true realSizeChanged=false redrawNeeded=false left=false top=false
04-05 12:46:02.389: W/MediaPlayer(10963): mediaplayer went away with unhandled events
04-05 12:46:02.389: D/MediaPlayer(10963): getMetadata
請發佈您的logcat吧！ – Numair 2013-04-04 10:48:08