Android 两种方式实现图片高斯模糊

一、通过 ImageView 设置 以及加了高斯模糊的 Bitmap 对象

        ImageLoaderUtils.loadImgWithListener(this, "https://.../uploads/20210813143221243.png" + "?x-oss-process=image/resize,w_" + CommonUtil.dip2px(100), new CustomTarget<Drawable>() {
            @Override
            public void onResourceReady(@NonNull Drawable resource, @Nullable Transition transition) {
                Bitmap bitmap = null;
                if (resource instanceof BitmapDrawable) {
                    bitmap = ((BitmapDrawable) resource).getBitmap();
                }
                //卡牌底部出现（加模糊），持续170ms
                showCardBlur(bitmap);
                showPlayRewardView(new RewardModel.RewardData(), cards_big_view, 0); //todo 测试数据，上线前需删除
            }

            @Override
            public void onLoadCleared(@Nullable Drawable placeholder) {

            }
        });

    private synchronized void showCardBlur(Bitmap bitmap) {
        new Thread() {
            @Override
            public void run() {
                recycleBlurBitmap();
                //获取卡片整体区域的view的Bitmap
                try {
                    if(bitmap != null){
                        if(handler == null){
                            handler = new MyHandler();
                        }
                        blurBitmap = BitmapUtils.rsBlur(VideoPlayActivity.this, bitmap, 25);
                        Message message = handler.obtainMessage();
                        message.what = 100; //通知显示高斯模糊
                        handler.sendMessage(message);
                    }
                } catch (Throwable throwable) {
                    throwable.printStackTrace();
                }
            }
        }.start();
    }

if(msg.what == MSG_BLUR_BITMAP){
                //todo 高斯模糊
                cards_big_view.iv_big_icon.setImageBitmap(blurBitmap);
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        ImageLoaderUtils.loadRoundCornerImg(VideoPlayActivity.this,"https://.../uploads/20210813143221243.png" + "?x-oss-process=image/resize,w_" + CommonUtil.dip2px(100),cards_big_view.iv_big_icon
                                , CommonUtil.dip2px(15),true,true,false,false);
                    }
                }, 170);
            }

二、通过 Glide 设置 高斯模糊的 BitmapTransformation 转化器

        RoundedCornersTransform roundedCornersTransform = new RoundedCornersTransform(this, CommonUtil.dip2px(15));
        roundedCornersTransform.setNeedCorner(true, true, true, true);
        MultiTransformation<Bitmap> multiTransformation = new MultiTransformation<>(new BlurTransformation(CommonUtil.dip2px(15), 3), roundedCornersTransform);
        Glide.with(this).load("https://.../uploads/20210813143221243.png" + "?x-oss-process=image/resize,w_" + CommonUtil.dip2px(100))
                .apply(RequestOptions.bitmapTransform(multiTransformation))
                .into(cards_big_view.iv_big_icon);

两种方式都要做这个设置

    defaultConfig {
        applicationId ""
        minSdkVersion rootProject.ext.android.minSdkVersion
        targetSdkVersion rootProject.ext.android.targetSdkVersion
        versionCode rootProject.ext.android.versionCode
        versionName rootProject.ext.android.versionName
        multiDexEnabled true
        renderscriptTargetApi 19  //使用renderscript的设置
        renderscriptSupportModeEnabled true //使用renderscript的设置
    }