我想要做的是播放從外部SD卡檢索到的第一個視頻,這在我的T-Mobile G2原來是樣本視頻爲手機。現在我認爲,因爲它在手機視頻播放器中播放,因此在我的測試應用程序中播放VideoView時沒有問題。Android VideoView不能在T-Mobile G2上播放示例視頻(只是音頻)
錯誤如何...
我得到的只是音頻播放。我很確定代碼都很好。畢竟這很簡單。
我能想到的是,也許手機視頻播放器使用一些原生播放功能,支持更多的視頻格式?
我也試過從本網站http://support.apple.com/kb/HT1425播放mv4(實際上是一個MP4文件)和3gp文件,但將它們推向模擬器SDCard,但都表現出同樣的問題。音頻但沒有視頻!
其實,我是否在某處丟失了許可?
其他人能解釋這種行爲嗎?
代碼:
public class Video extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.video);
// Get the external storage state
String state = Environment.getExternalStorageState();
// Check if we can read it in
if (Environment.MEDIA_MOUNTED.equals(state)==false&&
Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)==false)
{
// We can't read from the memory card, so warn and return;
Toast toast = Toast.makeText(this,
"The SD card is either missing or not in a readable state.", Toast.LENGTH_LONG);
toast.show();
return;
}
// Get a cursor to the video files
Cursor cc = this.getContentResolver().query(
MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
null, null, null, null);
// Get the video column index
int videoIDColumn = cc.getColumnIndex(MediaStore.Video.VideoColumns._ID);
// Iterate though the videos pointed to by the cursor
if (cc.moveToFirst())
{
int videoID = cc.getInt(videoIDColumn);
Uri videoPath = Uri.withAppendedPath(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,String.valueOf(videoID));
// Log and add an image to the view
Log.i("Video Found",videoPath.toString());
VideoView videoView = (VideoView)findViewById(R.id.VideoTest);
videoView.setVideoURI(videoPath);
videoView.start();
}
else
{
Toast toast = Toast.makeText(this,
"Can't find a video to play.", Toast.LENGTH_LONG);
toast.show();
}
}
}
在先進的感謝!
安迪
**更新
我採用了android 1.5和1.6,問題仍然存在嘗試。
而且,剛纔檢查logcat的,我沒有得到任何錯誤,任何其他文件,但對於名爲.3gp我得到下面這個錯誤:
07-02 10:53:31.181: INFO/Video Found(235): content://media/external/video/media/2
07-02 10:53:31.383: VERBOSE/VideoView(235): reset duration to -1 in openVideo
07-02 10:53:31.541: INFO/ActivityManager(58): Displayed activity com.dvl.testing/.screens.Video: 533 ms (total 533 ms)
07-02 10:53:31.693: WARN/PlayerDriver(31): Using generic video MIO
07-02 10:53:31.883: ERROR/SW_DEC(31): PV SW DECODER is used for MPEG4
07-02 10:53:31.922: DEBUG/AudioSink(31): bufferCount (4) is too small and increased to 12
07-02 10:53:32.322: INFO/ARMAssembler(58): generated scanline__00000077:03010104_00000004_00000000 [ 22 ipp] (41 ins) at [0x2166f8:0x21679c] in 3379159 ns
意義的人?