如何模糊框架布局上新增视图的背景？Android

Question

I am searching for it from very long time. I want to blur the background of the new added view to the frame layout. The new added view is a linear layout which opens as a pop up. Now how can I blur that frame layout.

I have gone through all the posts regarding blurring the background but i did not find that useful for my problem Because they all suggest to create a bitmap and set it blur on the bitmap. I simply want to blur the complete view behind the pop up

Answer 1

Use this library to blur the background of popup https://github.com/faradaj/BlurBehind

On BlurredActivity show the popup and finish the activity when pop dismiss.

Answer 2

You can use Renderscript Intrinsics, which are a set of built-in functions that require very little code to use, but are optimized for high-performance.

Once you have the blurring, the rest of the process is fairly straight forward. When you plan to leave an activity, create a bitmap of the current view and write it to disk. When you start your new activity (which should have a transparent background), you override the transition (otherwise you'll get the default zoom), and set the background to the blurred image you saved earlier. Add a fade in for the alpha and you get a nice little effect!

If you'd like to see how this looks in a sample project, you can find it on Github here .