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