StackBlur is a fast, almost Gaussian blur created by Mario Klingemann.

• More infomations:http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html

This project implements StackBlur in NDK which maybe better than RenderScript.

• Add dependency in app build.gradle as follow：

compile 'loner.library:blur:1.0.0'

• Call in code：

ImageUtil.fastBlur(tmpBitmap, 25)//return bitmap，the first params is bitmap，the second params is ambiguity。

The code in the project is more detailed.

• Memory will leak if the bitmap is too large.This is because ImageUtil.fastBlur() have not deal with large bitmap.

• The Source code in NDK is in https://github.com/LonerJimmy/DynamicHeadBg .