Android，stackBlur两个问题

1 -我认为你正在使用findViewById()检索View不在当前布局（不能确切地告诉你，所以我不能图如何实现stackblur没有显示你的代码），所以，尽量inflate的layout包含View，然后通过实例获取元素：

LayoutInflater inflater = (LayoutInflater) CurrentActivity.this
                        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.layout_contains_the_view,
                        (ViewGroup) findViewById(R.id.main_view_in_that_layout));
// So, for example if you want to get a TextView
TextView text = (TextView) layout.findViewById(R.id.text_view_name);

2-用于使图像模糊从0逐渐增加到20：

    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            int blur = 0;
            set_image_blur(blur);
            for(int i =0; i < 5000; i++){
                blur = blur + (20*(i/5000));
                set_image_blur(blur);
            }
        }
    });