IllegalStateException异常返回包含活动时的MediaPlayer [英] IllegalStateException when returning to Activity containing MediaPlayer
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问题描述
我有一个MediaPlayer的一个活动，每当我启动另一个活动从它（例如Chromecast的控制器活动或使用ShareActionProvider），并返回到与MediaPlayer的活动，我得到以下IllegalStateException异常：
15 11-13：48：33.083 22342-22342 / com.iosharp.android.ssplayer E / AndroidRuntime：致命异常：主要
java.lang.IllegalStateException
在android.media.MediaPlayer._setVideoSurface（本机方法）
在android.media.MediaPlayer.setDisplay（MediaPlayer.java:733）
在com.iosharp.android.ssplayer.videoplayer.VideoActivity.surfaceCreated（VideoActivity.java:126）
在android.view.SurfaceView.updateWindow（SurfaceView.java:610）
在android.view.SurfaceView.onWindowVisibilityChanged（SurfaceView.java:239）
在android.view.View.dispatchWindowVisibilityChanged（View.java:8170）
阅读它说setDisplay（）可以称得上是任何状态。
的文档我的相关code以下：
公共类VideoActivity扩展ActionBarActivity实现SurfaceHolder.Callback，MediaPlayer.On preparedListener，
VideoControllerView.MediaPlayerControl，MediaPlayer.OnErrorListener { 私人SurfaceView mSurfaceView;
私人MediaPlayer的MPLAYER;
私人VideoControllerView mController;
私人字符串mURL;
私人SurfaceHolder mSurfaceHolder;
私人VideoCastManager mCastManager;
私人MediaInfo mSelectedMedia;
私人IVideoCastConsumer mVideoCastConsumer;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
mCastManager = CastApplication.getCastManager（本）;
的setContentView（R.layout.activity_video）; mSurfaceView =（SurfaceView）findViewById（R.id.videoSurface）; setupActionBar（）;
setupCastListeners（）; 束B = getIntent（）getExtras（）。
如果（B！= NULL）{
mSelectedMedia = Utils.toMediaInfo（getIntent（）getBundleExtra（传媒））;
mURL = mSelectedMedia.getContentId（）; mSurfaceHolder = mSurfaceView.getHolder（）;
mSurfaceHolder.addCallback（本）;
MPLAYER =新的MediaPlayer（）;
mController =新VideoControllerView（这一点，假）;
}
}
@覆盖
保护无效onResume（）{
super.onResume（）;
setupLocalPlayback（）; 如果（mCastManager！= NULL）{
mCastManager.incrementUiCounter（）;
}
}
@覆盖
公共布尔onTouchEvent（MotionEvent事件）{
mController.show（）;
showActionBar（）;
返回false;
} @覆盖
公共无效onBack pressed（）{
super.onBack pressed（）;
//隐藏到getCurrentPosition的prevent非法状态异常
mController.hide（）;
如果（MPLAYER！= NULL）{
mPlayer.reset（）;
}
} @覆盖
保护无效的onPause（）{
super.onPause（）;
mController.hide（）;
mPlayer.release（）; 如果（mCastManager！= NULL）{
mCastManager.decrementUiCounter（）;
}
}
解决方案
将
mSurfaceHolder = mSurfaceView.getHolder（）;
mSurfaceHolder.addCallback（本）;
MPLAYER =新的MediaPlayer（）;
mController =新VideoControllerView（这一点，假）;
在bundle.getExtras（上图）检查像
mSurfaceHolder = mSurfaceView.getHolder（）;
mSurfaceHolder.addCallback（本）;
MPLAYER =新的MediaPlayer（）;
mController =新VideoControllerView（这一点，假）;束B = getIntent（）getExtras（）。
如果（B！= NULL）{
mSelectedMedia = Utils.toMediaInfo（getIntent（）getBundleExtra（传媒））;
mURL = mSelectedMedia.getContentId（）;
}
要确保它总是初始化
I have an Activity with a MediaPlayer and whenever I launch another Activity from it (for example Chromecast Controller Activity or using a ShareActionProvider) and return to the Activity with the MediaPlayer, I get the following IllegalStateException:
11-13 15:48:33.083 22342-22342/com.iosharp.android.ssplayer E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException
at android.media.MediaPlayer._setVideoSurface(Native Method)
at android.media.MediaPlayer.setDisplay(MediaPlayer.java:733)
at com.iosharp.android.ssplayer.videoplayer.VideoActivity.surfaceCreated(VideoActivity.java:126)
at android.view.SurfaceView.updateWindow(SurfaceView.java:610)
at android.view.SurfaceView.onWindowVisibilityChanged(SurfaceView.java:239)
at android.view.View.dispatchWindowVisibilityChanged(View.java:8170)
Reading the documentation it says setDisplay() can be called in any state.
My relevant code below:
public class VideoActivity extends ActionBarActivity implements SurfaceHolder.Callback, MediaPlayer.OnPreparedListener,
VideoControllerView.MediaPlayerControl, MediaPlayer.OnErrorListener {
private SurfaceView mSurfaceView;
private MediaPlayer mPlayer;
private VideoControllerView mController;
private String mURL;
private SurfaceHolder mSurfaceHolder;
private VideoCastManager mCastManager;
private MediaInfo mSelectedMedia;
private IVideoCastConsumer mVideoCastConsumer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mCastManager = CastApplication.getCastManager(this);
setContentView(R.layout.activity_video);
mSurfaceView = (SurfaceView) findViewById(R.id.videoSurface);
setupActionBar();
setupCastListeners();
Bundle b = getIntent().getExtras();
if (b != null) {
mSelectedMedia = Utils.toMediaInfo(getIntent().getBundleExtra("media"));
mURL = mSelectedMedia.getContentId();
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mPlayer = new MediaPlayer();
mController = new VideoControllerView(this, false);
}
}
@Override
protected void onResume() {
super.onResume();
setupLocalPlayback();
if (mCastManager != null) {
mCastManager.incrementUiCounter();
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
mController.show();
showActionBar();
return false;
}
@Override
public void onBackPressed() {
super.onBackPressed();
// Hide to prevent illegal state exception of getCurrentPosition
mController.hide();
if (mPlayer != null) {
mPlayer.reset();
}
}
@Override
protected void onPause() {
super.onPause();
mController.hide();
mPlayer.release();
if (mCastManager != null) {
mCastManager.decrementUiCounter();
}
}
解决方案
Put
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mPlayer = new MediaPlayer();
mController = new VideoControllerView(this, false);
above the bundle.getExtras() check like
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mPlayer = new MediaPlayer();
mController = new VideoControllerView(this, false);
Bundle b = getIntent().getExtras();
if (b != null) {
mSelectedMedia = Utils.toMediaInfo(getIntent().getBundleExtra("media"));
mURL = mSelectedMedia.getContentId();
}
to ensure it's always initialized
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