android 视频 截图,Android 视频截图

static public Bitmap getVideoThumbnail(ContentResolver cr, String path) {

Bitmap bitmap = null;

BitmapFactory.Options options = new BitmapFactory.Options();

options.inDither = false;

options.inPreferredConfig = Bitmap.Config.RGB_565;

//select condition.

String whereClause = MediaStore.Video.Media.DATA + " = '"

+ path + "'";

Log.v(TAG, "where = " + whereClause);

//colection of results.

Cursor cursor = cr.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,

new String[] { MediaStore.Video.Media._ID }, whereClause,

null, null);

Log.v(TAG, "cursor = " + cursor);

if (cursor == null || cursor.getCount() == 0) {

return ThumbnailUtils.createVideoThumbnail(path, MediaStore.Video.Thumbnails.MINI_KIND);

}

cursor.moveToFirst();

//image id in image table.

String videoId = cursor.getString(cursor

.getColumnIndex(MediaStore.Video.Media._ID));

Log.v(TAG, "videoId = " + videoId);

if (videoId == null) {

return ThumbnailUtils.createVideoThumbnail(path, MediaStore.Video.Thumbnails.MINI_KIND);

}

cursor.close();

long videoIdLong = Long.parseLong(videoId);

//via imageid get the bimap type thumbnail in thumbnail table.

bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,

Images.Thumbnails.MICRO_KIND, options);

Log.v(TAG, "bitmap = " + bitmap);

return bitmap;

}