Android Glide加载视频封面

/**
     *   context 上下文
     *   uri 视频地址
     *   imageView 设置image
     *   frameTimeMicros 获取某一时间帧
     */
    public void loadVideoScreenshot(final Context context, String uri, ImageView imageView, long frameTimeMicros) {
        RequestOptions requestOptions = RequestOptions.frameOf(frameTimeMicros);
        requestOptions.set(FRAME_OPTION, MediaMetadataRetriever.OPTION_CLOSEST);
        requestOptions.transform(new BitmapTransformation() {
            @Override
            protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap toTransform, int outWidth, int outHeight) {
                return toTransform;
            }

            @Override
            public void updateDiskCacheKey(MessageDigest messageDigest) {
                try {
                    messageDigest.update((context.getPackageName() + "RotateTransform").getBytes("utf-8"));
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        Glide.with(context).load(uri).apply(requestOptions).into(imageView);
    }