所以我对 Google TV 的编程感兴趣已经有一段时间了,并且刚刚开始涉足它。
我的第一个个人项目是创建一个简单的媒体播放器和文件浏览器,因为默认的媒体播放器太糟糕了。它在 Android 模拟器(版本 12)上完美运行,但是当我将它安装到我的 Google Revue 中时,我发现自己面临两个主要问题。
1) 播放器将始终按字母顺序播放第一部电影,无论选择哪个电影文件(所有格式和路径都正确。URI 加载到 setDataSource/setVideoPath 中)
2)每当我尝试快进一部电影时,它会按字母顺序跳到下一部电影
我在这里使用了来自 android 开发网站的 mediaplayer 和 videoview 示例:http: //developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/media/index.html 以及默认的 action_view 意图,但每一个都有完全相同的问题。这部电影将在模拟器上 100% 正常播放,但在 Google Revue 上具有完全不同的默认设置。
有没有人遇到过这个问题或者知道我能做什么/我可以去哪里解决它?
编辑
这是我调用活动的代码:
Intent intent = new Intent(getBaseContext(), myMediaPlayer.class);
intent.putExtra("PATH_ID", path);
startActivity(intent);
这是我运行 mediaPlayer 的代码。(几乎是网站代码的精确副本)
public class myMediaPlayer extends Activity implements
OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;
private String extras;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.mediaplayer);
mPreview = (SurfaceView) findViewById(R.id.surface);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
extras = getIntent().getExtras().getString("PATH_ID");;
}
private void playVideo(String filePath) {
doCleanUp();
try {
path = filePath;
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setOnVideoSizeChangedListener(this);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
Log.v(TAG, "onVideoSizeChanged called");
if (width == 0 || height == 0) {
Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
return;
}
mIsVideoSizeKnown = true;
mVideoWidth = width;
mVideoHeight = height;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
Log.d(TAG, "surfaceChanged called");
}
public void surfaceDestroyed(SurfaceHolder surfaceholder) {
Log.d(TAG, "surfaceDestroyed called");
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated called");
playVideo(extras);
}
@Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
holder.setFixedSize(mVideoWidth, mVideoHeight);
mMediaPlayer.start();
}
}
作为替代方案,我尝试像这样使用默认播放器:
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(aDirectory.getAbsolutePath())), "video/*");
startActivity(intent);
但它总是按字母顺序播放文件夹中的第一个视频,而不是选定的视频