Question

我在stackoverflow上看到很多答案并尝试了很多可能的组合，但仍然无法获得预期的bllureed图像，如下所示： Side Blur Edges

我试过的代码（使用画布然后覆盖bot图像）

    ProxyPreserveHost On
    ProxyPass / http://www.example.com:8080/
    ProxyPassReverse / http://www.example.com:8080/

使用此代码未获得所需的模糊尝试了几种组合，但仍然没有成功。

Answer 1

当试图模糊ImageView的两面时，我使用了以下代码：

  private void applyBlur(final ImageView image) {
    image.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            image.getViewTreeObserver().removeOnPreDrawListener(this);
            image.buildDrawingCache();

            Bitmap bmp = image.getDrawingCache();
            blur(bmp, image);
            return true;
        }
    });
}

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private void blur(Bitmap mBitmap, View view) {
    long startMs = System.currentTimeMillis();

    float radius = 20;

    Bitmap overlay = Bitmap.createBitmap((int) (view.getMeasuredWidth()),
            (int) (view.getMeasuredHeight()), Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(overlay);



    canvas.translate(-view.getLeft(), -view.getTop());
    canvas.drawBitmap(mBitmap, 100, 0,null);
    canvas.drawBitmap(mBitmap, -100, 0,null);
    RenderScript rs = RenderScript.create(getApplicationContext());

    Allocation overlayAlloc = Allocation.createFromBitmap(
            rs, overlay);

    ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(
            rs, overlayAlloc.getElement());

    blur.setInput(overlayAlloc);

    blur.setRadius(radius);

    blur.forEach(overlayAlloc);

    overlayAlloc.copyTo(overlay);

    view.setBackground(new BitmapDrawable(
            getResources(), overlay));

    rs.destroy();
}//end blur

使ImageView的两侧而不是仅左侧模糊的关键

将canvas.drawBitmap中的第二个参数更改为负值

例如100变为-100

因此，在canvas.drawBitmap(mBitmap, 100, 0,null);之后，您添加了canvas.drawBitmap(mBitmap, -100, 0,null);

希望这会有所帮助。

我希望位图左侧和右侧边缘模糊

1 个答案: