我想要在我的应用程序中播放的流媒体音频的播放/暂停等媒体控件。我正在使用 MediaPlayer 流式传输和播放音频。
有人可以提供有关如何将 MediaController 与 MediaPlayer 一起使用的代码片段吗?
谢谢克里斯
我想要在我的应用程序中播放的流媒体音频的播放/暂停等媒体控件。我正在使用 MediaPlayer 流式传输和播放音频。
有人可以提供有关如何将 MediaController 与 MediaPlayer 一起使用的代码片段吗?
谢谢克里斯
在媒体播放器中添加媒体控制器非常简单。让您的活动实现 MediaPlayerControl 并添加未实现的方法。代码如下:
我在这里使用来自 Api 演示的代码http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/media/MediaPlayerDemo_Video.html
public class ActivityVedioPlay extends Activity implements
OnBufferingUpdateListener, OnCompletionListener, OnPreparedListener,
OnVideoSizeChangedListener, SurfaceHolder.Callback, MediaPlayerControl {
.....
private MediaPlayer mMediaPlayer;
private MediaController mcontroller;
private Handler handler = new Handler();
.....
@Override
public boolean onTouchEvent(MotionEvent event) {
/*
* the MediaController will hide after 3 seconds - tap the screen to
* make it appear again
*/
mcontroller.show();
return false;
}
......
private void playVideo() {
doCleanUp();
try {
path = getIntent().getStringExtra("url");
if (path == "") {
Toast.makeText(ActivityVedioPlay.this, "URL Not found",
Toast.LENGTH_LONG).show();
}
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setScreenOnWhilePlaying(true);
mMediaPlayer.setOnVideoSizeChangedListener(this);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mcontroller = new MediaController(this);
} catch (Exception e) {
e.printStackTrace();
}
}
......
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
mcontroller.setMediaPlayer(this);
mcontroller.setAnchorView(findViewById(R.id.mediaplayer_surfaceview_container));
handler.post(new Runnable() {
public void run() {
mcontroller.setEnabled(true);
mcontroller.show();
}
});
}
//mediacontroller implemented methods
public void start() {
mMediaPlayer.start();
}
public void pause() {
mMediaPlayer.pause();
}
public int getDuration() {
return mMediaPlayer.getDuration();
}
public int getCurrentPosition() {
return mMediaPlayer.getCurrentPosition();
}
public void seekTo(int i) {
mMediaPlayer.seekTo(i);
}
public boolean isPlaying() {
return mMediaPlayer.isPlaying();
}
public int getBufferPercentage() {
return 0;
}
public boolean canPause() {
return true;
}
public boolean canSeekBackward() {
return true;
}
public boolean canSeekForward() {
return true;
}
就像从这里提取的这段代码一样简单。他们使用 VideoView 而不是 MediaPlayer,这样可以为您节省几行代码:
布局:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"
android:paddingLeft="2px" android:paddingRight="2px"
android:paddingTop="2px" android:paddingBottom="2px"
android:layout_width="fill_parent" android:orientation="vertical">
<VideoView android:layout_height="fill_parent"
android:layout_width="fill_parent" android:id="@+id/VideoView"></VideoView>
</LinearLayout>
和代码:
public class VideoPlayerController extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video);
VideoView videoView = (VideoView) findViewById(R.id.VideoView);
MediaController mediaController = new MediaController(this);
mediaController.setAnchorView(videoView);
// Set video link (mp4 format )
Uri video = Uri.parse("mp4 video link");
videoView.setMediaController(mediaController);
videoView.setVideoURI(video);
videoView.start();
}
}
就这样。只需替换mp4 video link
为流式视频网址即可。