我是新手使用表面视图在视频播放器中播放视频现在我想保存媒体播放器的实例状态，当视图重新加载或重新创建时方向更改然后旧媒体播放器状态从旧位置开始不加载原始方式at零位置我设置在清单中，如屏幕方向，但是时间oncreate未调用我想调用oncreate方法，当屏幕方向更改意味着我想要在方向更改时重新加载新活动并且还保存媒体播放器状态请确认我被卡住那时我不知道是什么错误。
SurfaceView videoSurface;
MediaPlayer player;
VideoControllerView controller;
private boolean mFullScreen = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_video_player);
videoSurface = (SurfaceView) findViewById(R.id.videoSurface);
SurfaceHolder videoHolder = videoSurface.getHolder();
videoHolder.addCallback(this);
player = new MediaPlayer();
controller = new VideoControllerView(this);
try {
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setDataSource(this, Uri.parse("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"));
player.setOnPreparedListener(this);
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
controller.show();
return false;
}
// Implement SurfaceHolder.Callback
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
player.setDisplay(holder);
player.prepareAsync();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
// End SurfaceHolder.Callback
// Implement MediaPlayer.OnPreparedListener
@Override
public void onPrepared(MediaPlayer mp) {
controller.setMediaPlayer(this);
controller.setAnchorView((FrameLayout) findViewById(R.id.videoSurfaceContainer));
player.start();
}
// End MediaPlayer.OnPreparedListener
// Implement VideoMediaController.MediaPlayerControl
@Override
public boolean canPause() {
return true;
}
@Override
public boolean canSeekBackward() {
return true;
}
@Override
public boolean canSeekForward() {
return true;
}
@Override
public int getBufferPercentage() {
return 0;
}
@Override
public int getCurrentPosition() {
return player.getCurrentPosition();
}
@Override
public int getDuration() {
return player.getDuration();
}
@Override
public boolean isPlaying() {
return player.isPlaying();
}
@Override
public void pause() {
player.pause();
}
@Override
public void seekTo(int i) {
player.seekTo(i);
}
@Override
public void start() {
player.start();
}
@Override
public boolean isFullScreen() {
if(mFullScreen){
Log.w("FullScreen", "--set icon full screen--");
Log.w("curr",player.getCurrentPosition()+"");
/* ImageButton mFullscreenButton=(ImageButton)controller.findViewById(R.id.fullscreen);
mFullscreenButton.setImageResource(R.drawable.ic_media_fullscreen_stretch);
*/ return false;
}else{
Log.w("FullScreen", "--set icon small full screen--");
return true;
}
}
@Override
public void toggleFullScreen() {
Log.w("FullScreen", "-----------------click toggleFullScreen-----------");
setFullScreen(isFullScreen());
}
// End VideoMediaController.MediaPlayerControl
public void setFullScreen(boolean fullScreen){
fullScreen = false;
if (mFullScreen)
{
Log.w("FullScreen", "-----------Set full screen SCREEN_ORIENTATION_LANDSCAPE------------");
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int height = displaymetrics.heightPixels;
int width = displaymetrics.widthPixels;
android.widget.FrameLayout.LayoutParams params = (android.widget.FrameLayout.LayoutParams) videoSurface.getLayoutParams();
params.width = width;
params.height=height;
params.setMargins(0, 0, 0, 0);
//set icon is full screen
mFullScreen = fullScreen;
}
else{
Log.w("FullScreen", "-----------Set small screen SCREEN_ORIENTATION_PORTRAIT------------");
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
final FrameLayout mFrame = (FrameLayout) findViewById(R.id.videoSurfaceContainer);
// int height = displaymetrics.heightPixels;
int height =225;//get height Frame Container video//mFrame.getHeight()
int width =displaymetrics.widthPixels;
android.widget.FrameLayout.LayoutParams params = (android.widget.FrameLayout.LayoutParams) videoSurface.getLayoutParams();
params.width = width;
params.height= height;
params.setMargins(0, 0, 0, 0);
//set icon is small screen
mFullScreen = !fullScreen;
}
}
@Override
protected void onSaveInstanceState(Bundle estadoguardado){
super.onSaveInstanceState(estadoguardado);
if(player!=null){
int pos=player.getCurrentPosition();
estadoguardado.putInt("posicion", pos);
}
}
@Override
protected void onRestoreInstanceState(Bundle estadoguardado)
{
super.onRestoreInstanceState(estadoguardado);
if(estadoguardado!=null && player!=null){
int pos=estadoguardado.getInt("posicion");
Log.w("position",pos+"");
player.seekTo(pos);
}
}
@Override
public void onResume()
{
super.onResume();
try {
//reinicia
Toast.makeText(this, "onResume2", Toast.LENGTH_SHORT).show();
if (player == null)
player.setDataSource(this, Uri.parse("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"));
player.seekTo(0);
player.setLooping(true);
player.start();
}
catch(Exception e)
{
e.printStackTrace();
}
}
@Override
public void onPause()
{
super.onPause();
Toast.makeText(this, "onPause2", Toast.LENGTH_SHORT).show();
//LIBERA A MEDIA PLAYER
if (player != null)
{
player.release();
player = null;
}
以及从frameLayout
扩展的其他类 当应用程序运行时，会发生一些崩溃
java.lang.IllegalStateException
at android.media.MediaPlayer.prepareAsync(Native Method)
at whizpool.videoplayerexample.VideoPlayerActivity.surfaceCreated(VideoPlayerActivity.java:70)
at android.view.SurfaceView.updateWindow(SurfaceView.java:554)
at android.view.SurfaceView.access$000(SurfaceView.java:81)
at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:693)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1762)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4666)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511
10-12 10:00:48.726 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ Attempt to perform seekTo in wrong state: mPlayer=0x18332b8, mCurrentState=2
10-12 10:00:48.726 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ error (-38, 0)
10-12 10:00:48.727 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ start called in state 0
10-12 10:00:48.727 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ error (-38, 0)
10-12 10:00:48.738 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ Error (-38,0)
10-12 10:00:48.738 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ Error (-38,0)
10-12 10:00:48.885 2268-2268/whizpool.videoplayerexample E/MediaPlayer﹕ prepareAsync called in state 0
答案 0 :(得分：2)
您需要在几秒钟后将方向重置为SCREEN_ORIENTATION_SENSOR，以便传感器重新开始工作..
setRequestedOrientation（ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE）;
new Handler（）。postDelayed（new Runnable（）{
@Override public void run() { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR); } }, 2000);
答案 1 :(得分：0)
要在旋转时保存和恢复视频位置，您需要使用onSaveInstanceState和onRestoreInstanceState。您可以使用此代码从VideoView保存视频位置。
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
videoPosition = savedInstanceState.getInt(VIDEO_POSITION_KEY, 0);
VideoView videoView = (VideoView) findViewById(R.id.videoView);
Log.d(LOG_TAG, "onRestoreInstanceState() - Seeking to position:" + Integer.toString(videoPosition));
videoView.seekTo(videoPosition); // this call should keep the video at the saved position
}
...并使用此代码再次检索它。
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