Android 使用MediaPlayer播放 mp4格式的视频

[NeverGiveUp7]

Android 使用MediaPlayer播放 mp4格式的视频的时候，播放页面没有动，希望懂的大神说一下原因！
下面是异常：
12-15 21:19:02.587: W/EGL_emulation(1782): eglSurfaceAttrib not implemented
12-15 21:19:02.587: W/OpenGLRenderer(1782): Failed to set EGL_SWAP_BEHAVIOR on surface 0xe3119220, error=EGL_SUCCESS
12-15 21:19:21.789: I/tag(1782): FirstActivity-->onPause
12-15 21:19:21.841: I/tag(1782): FirstActivity-->onStart
12-15 21:19:21.841: I/tag(1782): FirstActivity-->onResume
12-15 21:19:21.921: W/EGL_emulation(1782): eglSurfaceAttrib not implemented
12-15 21:19:21.921: W/OpenGLRenderer(1782): Failed to set EGL_SWAP_BEHAVIOR on surface 0xf43b6f80, error=EGL_SUCCESS
12-15 21:19:22.509: I/tag(1782): FirstActivity-->onStop
12-15 21:19:23.672: I/tag(1782): FirstActivity-->onPause
12-15 21:19:23.962: W/EGL_emulation(1782): eglSurfaceAttrib not implemented
12-15 21:19:23.962: W/OpenGLRenderer(1782): Failed to set EGL_SWAP_BEHAVIOR on surface 0xe1ebe960, error=EGL_SUCCESS
12-15 21:19:24.021: E/mediaPlayer(1782): surface created
12-15 21:19:24.021: E/mediaPlayer(1782): surface changed
12-15 21:19:24.031: E/mediaPlayer(1782): surface destroyed
12-15 21:19:24.158: W/EGL_emulation(1782): eglSurfaceAttrib not implemented
12-15 21:19:24.158: W/OpenGLRenderer(1782): Failed to set EGL_SWAP_BEHAVIOR on surface 0xe1ebe960, error=EGL_SUCCESS
12-15 21:19:24.230: E/mediaPlayer(1782): surface created
12-15 21:19:24.230: E/mediaPlayer(1782): surface changed
12-15 21:19:24.490: I/tag(1782): FirstActivity-->onStop
--------------------------------------
下面是代码：
第一部分：Player.java
public class Player implements OnBufferingUpdateListener,
OnCompletionListener, MediaPlayer.OnPreparedListener,
SurfaceHolder.Callback {
private int videoWidth;
private int videoHeight;
public MediaPlayer mediaPlayer;
private SurfaceHolder surfaceHolder;
private SeekBar skbProgress;
private Timer mTimer=new Timer();
public Player(SurfaceView surfaceView,SeekBar skbProgress)
{
this.skbProgress=skbProgress;
surfaceHolder=surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mTimer.schedule(mTimerTask, 0, 1000);
}
// 通过定时器和Handler来更新进度条
TimerTask mTimerTask = new TimerTask() {
@Override
public void run() {
if(mediaPlayer==null)
return;
if (mediaPlayer.isPlaying() && skbProgress.isPressed() == false) {
handleProgress.sendEmptyMessage(0);
}
}
};
Handler handleProgress = new Handler() {
public void handleMessage(Message msg) {
int position = mediaPlayer.getCurrentPosition();
int duration = mediaPlayer.getDuration();
if (duration > 0) {
long pos = skbProgress.getMax() * position / duration;
skbProgress.setProgress((int) pos);
}
};
};
public void play(){
mediaPlayer.start();
}
public void playUrl(String videoUrl) {
try {
mediaPlayer.reset();
mediaPlayer.setDataSource(videoUrl);
mediaPlayer.prepare();//prepare之后自动播放
mediaPlayer.start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void pause()
{
mediaPlayer.pause();
}
public void stop()
{
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer = null;
}
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
Log.e("mediaPlayer", "surface changed");
}
@Override
public void surfaceCreated(SurfaceHolder arg0) {
try {
mediaPlayer = new MediaPlayer();
mediaPlayer.setDisplay(surfaceHolder);
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnBufferingUpdateListener(this);
mediaPlayer.setOnPreparedListener(this);
} catch (Exception e) {
Log.e("mediaPlayer", "error", e);
}
Log.e("mediaPlayer", "surface created");
}
@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
Log.e("mediaPlayer", "surface destroyed");
}
@Override
/**
* 通过onPrepared播放
*/
public void onPrepared(MediaPlayer arg0) {
videoWidth = mediaPlayer.getVideoWidth();
videoHeight = mediaPlayer.getVideoHeight();
if (videoHeight != 0 && videoWidth != 0) {
arg0.start();
}
Log.e("mediaPlayer", "onPrepared");
}
@Override
public void onCompletion(MediaPlayer arg0) {
}
@Override
public void onBufferingUpdate(MediaPlayer arg0, int bufferingProgress) {
skbProgress.setSecondaryProgress(bufferingProgress);
int currentProgress=skbProgress.getMax()*mediaPlayer.getCurrentPosition()/mediaPlayer.getDuration();
Log.e(currentProgress+"% play", bufferingProgress + "% buffer");
}
}
第二部分：test_videoplayer.java
public class test_videoplayer extends Activity {
private SurfaceView surfaceView;
private Button btnPause, btnPlayUrl, btnStop;
private SeekBar skbProgress;
private Player player;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
surfaceView = (SurfaceView) this.findViewById(R.id.surfaceView1);
btnPlayUrl = (Button) this.findViewById(R.id.btnPlayUrl);
btnPlayUrl.setOnClickListener(new ClickEvent());
btnPause = (Button) this.findViewById(R.id.btnPause);
btnPause.setOnClickListener(new ClickEvent());
btnStop = (Button) this.findViewById(R.id.btnStop);
btnStop.setOnClickListener(new ClickEvent());
skbProgress = (SeekBar) this.findViewById(R.id.skbProgress);
skbProgress.setOnSeekBarChangeListener(new SeekBarChangeEvent());
player = new Player(surfaceView, skbProgress);
}
class ClickEvent implements OnClickListener {
@Override
public void onClick(View arg0) {
if (arg0 == btnPause) {
player.pause();
} else if (arg0 == btnPlayUrl) {
String url="http://v1.mukewang.com/cdbd2cd7-1819-4c22-8796-e4bc25d0a249/L.mp4";
player.playUrl(url);
} else if (arg0 == btnStop) {
player.stop();
}
}
}
class SeekBarChangeEvent implements SeekBar.OnSeekBarChangeListener {
int progress;
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// 原本是(progress/seekBar.getMax())*player.mediaPlayer.getDuration()
this.progress = progress * player.mediaPlayer.getDuration()
/ seekBar.getMax();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// seekTo()的参数是相对与影片时间的数字，而不是与seekBar.getMax()相对的数字
player.mediaPlayer.seekTo(progress);
}
}
}
第三部分：AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.imooc.calculator"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO"/>

第四部分：main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent" android:layout_width="fill_parent">
<SurfaceView android:id="@+id/surfaceView1"
android:layout_height="fill_parent" android:layout_width="fill_parent"></SurfaceView>
<LinearLayout android:layout_height="wrap_content"
android:layout_width="fill_parent" android:layout_gravity="bottom"
android:orientation="vertical">
<LinearLayout android:orientation="horizontal"
android:layout_gravity="center_horizontal" android:layout_marginTop="4.0dip"
android:layout_height="wrap_content" android:layout_width="wrap_content">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/btnPlayUrl"
android:text="播放网络视频"></Button>
<Button android:layout_height="wrap_content" android:id="@+id/btnPause"
android:text="暂停" android:layout_width="80dip"></Button>
<Button android:layout_height="wrap_content"
android:layout_width="80dip" android:text="停止" android:id="@+id/btnStop"></Button>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_marginBottom="20dip">
<SeekBar android:paddingRight="10dip" android:layout_gravity="center_vertical"
android:paddingLeft="10dip" android:layout_weight="1.0"
android:layout_height="wrap_content" android:layout_width="wrap_content"
android:id="@+id/skbProgress" android:max="100"></SeekBar>
</LinearLayout>
</LinearLayout>
</FrameLayout>