1 主要是通过更改view 的大小来改变视频的大校
2 在视频初始化时获得视频的高宽都为0 ，这个必须要注意，必须播放后延时 修改view 大小
3 sufaceview 的布局类是 android.widget.LinearLayout.LayoutParams 这个必须注意（在设置布局时一定要注意父对象的类型）
4 在 sufaceview surfaceChanged事件中加入 mediaPlayer.setDisplay(arg0) ，setDisplay 方法在任意时刻都是可以调用的
try {
Log.e("m3u8", mediapath);
mediaPlayer = new MediaPlayer();
// 开始准备播放
uiHandler.sendMessage(uiHandler
.obtainMessage(MediaPlayerMessage.PREPARE));
// 设置媒体的路径
mediaPlayer.setDataSource(mediapath);
// 设置边播放变缓冲
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.prepareAsync();
} catch (Exception e) {
// TODO: handle exception
Log.e("meidaplayer err ", e.toString());
}
/**
* 播放器异常事件
*/
mediaPlayer.setOnErrorListener(new OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// TODO Auto-generated method stub
mediaPlayer.release();
return false;
}
});
//视频准备完成 可以播放
mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
try {
mp.start();
//给ui 界面发送消息 这里有个延时是设置 如果不设置延时 会出现 获得视频的高宽为零的文件
uiHandler.sendEmptyMessageDelayed(MediaPlayerMessage.SETSIZE, 1000);
} catch (Exception e) {
// TODO: handle exception
Log.e("start mediaplayer", e.toString());
}
}
});
case MediaPlayerMessage.SETSIZE:
int mVideoWidth = mediaPlayerView.mediaPlayer.getVideoWidth();
int mVideoHeight = mediaPlayerView.mediaPlayer.getVideoHeight();
int width=_frameLayout_main.getWidth();
int height=_frameLayout_main.getHeight();
android.widget.LinearLayout.LayoutParams sufaceviewParams = (android.widget.LinearLayout.LayoutParams) mediapaly_sufaceview
.getLayoutParams();if ( mVideoWidth * height> width * mVideoHeight ) {
//Log.i("@@@", "image too tall, correcting");
sufaceviewParams.height = width * mVideoHeight / mVideoWidth;
} else if ( mVideoWidth * height< width * mVideoHeight ) {
//Log.i("@@@", "image too wide, correcting");
sufaceviewParams.width = height * mVideoWidth / mVideoHeight;
}else{
sufaceviewParams.height=height;
sufaceviewParams.width = width;
}
sufaceviewParams.gravity=Gravity.CENTER;
mediapaly_sufaceview.setLayoutParams(sufaceviewParams);
break;
//更在 surface 大小后事件@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
Log.e("Surface h w", String.valueOf(arg2) + " " + String.valueOf(arg3));
if (mediaPlayer != null) {
mediaPlayer.setDisplay(arg0);}
}
