createVideoThumbnail类[转]

private Bitmap createVideoThumbnail(String filePath) {
        Bitmap bitmap = null;
        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
        try {
            retriever.setMode(MediaMetadataRetriever.MODE_CAPTURE_FRAME_ONLY);
            retriever.setDataSource(filePath);
            bitmap = retriever.captureFrame();
        } catch(IllegalArgumentException ex) {
            // Assume this is a corrupt video file
        } catch (RuntimeException ex) {
            // Assume this is a corrupt video file.
        } finally {
            try {
                retriever.release();
            } catch (RuntimeException ex) {
                // Ignore failures while cleaning up.
            }
        }
        return bitmap;
    }
private void getVideoFile(final List<videoItem> list)
{
  Bitmap bitmap = null;
  ContentResolver mContentResolver = this.getContentResolver();
        Cursor cursor = mContentResolver.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null,  
                null, null, MediaStore.Video.DEFAULT_SORT_ORDER);
        if (cursor.moveToFirst())
        {
            do {
                //ID：MediaStore.Audio.Media._ID
                int id = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID));  
                //名称 ：MediaStore.Audio.Media.TITLE
                String tilte = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));  
                //专辑名：MediaStore.Audio.Media.ALBUM
                String album = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.ALBUM));  
                //歌手名： MediaStore.Audio.Media.ARTIST
                String artist = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.ARTIST));  
                //路径 ：MediaStore.Audio.Media.DATA
                String url = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));  
                //总播放时长 ：MediaStore.Audio.Media.DURATION
                int duration = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION));  
                //大小 ：MediaStore.Audio.Media.SIZE
                int size = (int)cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE));
                //拍摄时间
                int dateTaken = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATE_TAKEN));
                String datetime = DateFormat.format("yyyy-MM-dd kk:mm:ss", dateTaken).toString();
                bitmap = createVideoThumbnail(url);
   }