我有多个MediaPlayers，我想使用独立按钮暂停它们。我对使用单个MediaPlayer的另一个应用程序没有任何问题，但现在方法“.pause”给我带来了问题。
在日志中可以看到方法“.isPlaying”工作正常，但视频没有暂停。我不知道我做错了什么。
当我第一次点击按钮时，暂停，我获取此日志：
07-12 15:08:59.786: V/MediaPlayer-JNI(1562): isPlaying: 1
07-12 15:08:59.786: I/MediaPlayer(1562): sendBroadcast SMART_PAUSE_stop()
07-12 15:08:59.786: V/MediaPlayer-JNI(1562): stop
07-12 15:08:59.786: V/MediaPlayer(1562): stop
07-12 15:08:59.786: V/MediaPlayer(1562): message received msg=7, ext1=0, ext2=0
07-12 15:08:59.786: V/MediaPlayer(1562): unrecognized message: (7, 0, 0)
07-12 15:08:59.786: V/MediaPlayer(1562): callback application
07-12 15:08:59.786: V/MediaPlayer(1562): back from callback
07-12 15:08:59.826: V/MediaPlayer-JNI(1562): getCurrentPosition: 5080 (msec)
07-12 15:08:59.826: V/MediaPlayer-JNI(1562): isPlaying: 0
第二次，恢复，我获得此日志：
07-12 15:08:24.501: V/MediaPlayer-JNI(1562): isPlaying: 0
07-12 15:08:24.506: I/MediaPlayer(1562): sendBroadcast SMART_PAUSE_start()
07-12 15:08:24.506: W/MediaPlayer(1562): this is IMEDIA_PLAYER_VIDEO_EXIST
07-12 15:08:24.506: I/MediaPlayer(1562): sendBroadcast android.media.IMediaPlayer.videoexist
07-12 15:08:24.506: V/MediaPlayer-JNI(1562): start
07-12 15:08:24.506: V/MediaPlayer(1562): start
07-12 15:08:24.506: E/MediaPlayer(1562): start called in state 64
07-12 15:08:24.506: V/MediaPlayer(1562): message received msg=100, ext1=-38, ext2=0
07-12 15:08:24.506: E/MediaPlayer(1562): error (-38, 0)
07-12 15:08:24.506: V/MediaPlayer(1562): callback application
07-12 15:08:24.506: V/MediaPlayer(1562): back from callback
07-12 15:08:24.506: E/MediaPlayer(1562): Error (-38,0)
07-12 15:08:24.506: D/MediaPlayer(1562): MediaPlayer(0): onCompletion called
可能是什么问题？
我的代码是：
public class Reproductor extends Activity implements
OnBufferingUpdateListener, OnCompletionListener, OnPreparedListener,
OnVideoSizeChangedListener, SurfaceHolder.Callback, View.OnClickListener {
private Bundle extras;
private static final String PATH = "path";
private static final String PATH2 = "path2";
private static final String TAG = "MediaPlayer";
private int[] SURFACE_RES_IDS = {
R.id.video_1_surfaceview, R.id.video_2_surfaceview};
private MediaPlayer[] mMediaPlayers = new MediaPlayer[SURFACE_RES_IDS.length];
private SurfaceView[] mSurfaceViews = new SurfaceView[SURFACE_RES_IDS.length];
private SurfaceHolder[] mSurfaceHolders = new SurfaceHolder[SURFACE_RES_IDS.length];
private boolean[] mSizeKnown = new boolean[SURFACE_RES_IDS.length];
private boolean[] mVideoReady = new boolean[SURFACE_RES_IDS.length];
private int mVideoWidth;
private int mVideoHeight;
private Button bPlayPause1, bPlayPause2, bMute1, bMute2;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.repr_multiple);
extras = getIntent().getExtras();
mVideoWidth=1200;
mVideoHeight=900;
bPlayPause1 = (Button)findViewById(R.id.bPlayPause1);
bPlayPause2 = (Button)findViewById(R.id.bPlayPause2);
bMute1 = (Button)findViewById(R.id.bMute1);
bMute2 = (Button)findViewById(R.id.bMute2);
bPlayPause1.setOnClickListener(this);
bPlayPause2.setOnClickListener(this);
bMute1.setOnClickListener(this);
bMute2.setOnClickListener(this);
// create surface holders
for (int i=0; i<mSurfaceViews.length; i++) {
mSurfaceViews[i] = (SurfaceView) findViewById(SURFACE_RES_IDS[i]);
mSurfaceHolders[i] = mSurfaceViews[i].getHolder();
mSurfaceHolders[i].addCallback(this);
mSurfaceHolders[i].setFixedSize(mVideoWidth, mVideoHeight);
}
}
public void onBufferingUpdate(MediaPlayer player, int percent) {
Log.d(TAG, "MediaPlayer(" + indexOf(player)
+ "): onBufferingUpdate percent: " + percent);
}
public void onCompletion(MediaPlayer player) {
Log.d(TAG, "MediaPlayer(" + indexOf(player) + "): onCompletion called");
}
public void onVideoSizeChanged(MediaPlayer player, int width, int height) {
Log.v(TAG, "MediaPlayer(" + indexOf(player)
+ "): onVideoSizeChanged called");
if (width == 0 || height == 0) {
Log.e(TAG, "invalid video width(" + width + ") or height(" + height
+ ")");
return;
}
int index = indexOf(player);
if (index == -1)
return; // sanity check; should never happen
mSizeKnown[index] = true;
if (mVideoReady[index] && mSizeKnown[index]) {
startVideoPlayback(player);
}
}
public void onPrepared(MediaPlayer player) {
Log.d(TAG, "MediaPlayer(" + indexOf(player) + "): onPrepared called");
int index = indexOf(player);
if (index == -1)
return; // sanity check; should never happen
mVideoReady[index] = true;
startVideoPlayback(player);
/*
if (mVideoReady[index] && mSizeKnown[index]) {
startVideoPlayback(player);
}
*/
}
public void surfaceChanged(SurfaceHolder holder, int i, int j, int k) {
Log.d(TAG, "SurfaceHolder(" + indexOf(holder)
+ "): surfaceChanged called");
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d(TAG, "SurfaceHolder(" + indexOf(holder)
+ "): surfaceDestroyed called");
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "SurfaceHolder(" + indexOf(holder)
+ "): surfaceCreated called");
int index = indexOf(holder);
if (index == -1)
return; // sanity check; should never happen
try {
mMediaPlayers[index] = new MediaPlayer();
if(index == 0){
mMediaPlayers[index].setDataSource(extras.getString(PATH));
}else if(index == 1){
mMediaPlayers[index].setDataSource(extras.getString(PATH2));
}else{
mMediaPlayers[index].setDataSource(extras.getString(PATH2));
}
mMediaPlayers[index].setDisplay(mSurfaceHolders[index]);
mMediaPlayers[index].setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayers[index].prepareAsync();
mMediaPlayers[index].setOnBufferingUpdateListener(this);
mMediaPlayers[index].setOnCompletionListener(this);
mMediaPlayers[index].setOnPreparedListener(this);
mMediaPlayers[index].setOnVideoSizeChangedListener(this);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onPause() {
super.onPause();
// releaseMediaPlayers();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayers();
}
private void releaseMediaPlayers() {
for (int i = 0; i < mMediaPlayers.length; i++) {
if (mMediaPlayers[i] != null) {
mMediaPlayers[i].release();
mMediaPlayers[i] = null;
}
}
}
private void startVideoPlayback(MediaPlayer player) {
Log.v(TAG, "MediaPlayer(" + indexOf(player) + "): startVideoPlayback");
player.start();
}
private int indexOf(MediaPlayer player) {
for (int i = 0; i < mMediaPlayers.length; i++)
if (mMediaPlayers[i] == player)
return i;
return -1;
}
private int indexOf(SurfaceHolder holder) {
for (int i = 0; i < mSurfaceHolders.length; i++)
if (mSurfaceHolders[i] == holder)
return i;
return -1;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.bPlayPause1:
if(mMediaPlayers[0].isPlaying()){
mMediaPlayers[0].pause();
bPlayPause1.setText("Resume");
}else{
mMediaPlayers[0].start();
bPlayPause1.setText("Pause");
}
break;
case R.id.bPlayPause2:
if(mMediaPlayers[1].isPlaying()){
mMediaPlayers[1].pause();
bPlayPause2.setText("Resume");
}else{
mMediaPlayers[1].start();
bPlayPause2.setText("Pause");
}
break;
case R.id.bMute1:
break;
case R.id.bMute2:
break;
}
}
}