android获取缩略图

public Bitmap getVideoThumbnail(String filePath) {    Bitmap bitmap = null;    MediaMetadataRetriever retriever = new MediaMetadataRetriever();    try {        retriever.setDataSource(filePath);        bitmap = retriever.getFrameAtTime(100); //100为截取0.01秒时的图    } catch (IllegalArgumentException e) {        e.printStackTrace();    } catch (RuntimeException e) {        e.printStackTrace();    } finally {        try {            retriever.release();        } catch (RuntimeException e) {            e.printStackTrace();        }    }    return bitmap;}//bitmap转为uri
Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), videoBitmap, null, null));