public static Bitmap blurBitmap(Bitmap bitmap, float radius, Context context) { 
    //創(chuàng)建渲染腳本上下文 
    RenderScript rs = RenderScript.create(context); 
 
    //為位圖分配內(nèi)存 
    Allocation allocation = Allocation.createFromBitmap(rs, bitmap); 
 
    Type t = allocation.getType(); 
 
    //用同樣的類型創(chuàng)建內(nèi)存，一般用這兩種方式創(chuàng)建 <span style="font-family: Arial, Helvetica, sans-serif;">Allocation</span> 
    Allocation blurredAllocation = Allocation.createTyped(rs, t); 
 
    //創(chuàng)建高斯渲染腳本  
    ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs)); 
    //設(shè)置模糊半徑 (maximum 25.0) 
    blurScript.setRadius(radius); 
    //為腳本設(shè)置輸入?yún)?shù)  
    blurScript.setInput(allocation); 
    //調(diào)用腳本 結(jié)果存入 <span style="font-family: Arial, Helvetica, sans-serif;">blurredAllocation中</span> 
    blurScript.forEach(blurredAllocation); 
 
    //把腳本結(jié)果存入位圖中 因為為native層渲染，所以結(jié)果需要復(fù)制到上層 
    blurredAllocation.copyTo(bitmap); 
 
    //Destroy everything to free memory 
    allocation.destroy(); 
    blurredAllocation.destroy(); 
    blurScript.destroy(); 
    t.destroy(); 
 
    return bitmap; 
  }