Android實現高斯模糊（也叫毛玻璃效果）
阿新 • • 發佈：2019-01-07
/**
* 高斯模糊
* @param bkg
* @param view
*/
private void blur(Bitmap bkg, View view) {
float radius = 25;
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(bkg, 0, 0, null);
RenderScript rs = RenderScript.create(mContext);
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.setBackgroundDrawable(new BitmapDrawable(
mContext.getResources(), overlay));
rs.destroy();
}
* 高斯模糊
* @param bkg
* @param view
*/
private void blur(Bitmap bkg, View view) {
float radius = 25;
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(bkg, 0, 0, null);
RenderScript rs = RenderScript.create(mContext);
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.setBackgroundDrawable(new BitmapDrawable(
mContext.getResources(), overlay));
rs.destroy();
}