带有媒体播放器的媒体控制器 [英] MediaController with MediaPlayer

问题描述

我想要媒体控件，例如播放/暂停我在我的应用中播放的流式音频.我正在使用 MediaPlayer 流式传输和播放音频.

I want media controls such as play/pause for streaming audio that I am playing in my app. I am using MediaPlayer to stream and play the audio.

有人可以提供有关如何将 MediaController 与 MediaPlayer 一起使用的代码片段吗?

Can someone provide a code snippet on how to use MediaController with MediaPlayer?

谢谢克里斯

推荐答案

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:

It's quite simple to add media controller in a media player. Make your activity implement MediaPlayerControl and add unimplemented methods. Code is as below:

我正在使用来自此处的 Api 演示代码 http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/media/MediaPlayerDemo_Video.html

I am using code from Api demos from here 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;
    }

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