Android ImageView Blurring

MakeBlurr.java

  public void makeBlur(ImageView imageview) {
   BitmapDrawable drawable = (BitmapDrawable) imageview.getDrawable();
   Bitmap bitmap = drawable.getBitmap();
   textView.setText("Radius: " + "" + radiusArr[position]);
   Bitmap blurred = blurRenderScript(bitmap, 25); //second parametre is radius max:25
   imageview.setImageBitmap(blurred); //radius decide blur amount
  }

  @SuppressLint("NewApi")
  private Bitmap blurRenderScript(Bitmap smallBitmap, int radius) {

   try {
    smallBitmap = RGB565toARGB888(smallBitmap);
   } catch (Exception e) {
    e.printStackTrace();
   }


   Bitmap bitmap = Bitmap.createBitmap(
    smallBitmap.getWidth(), smallBitmap.getHeight(),
    Bitmap.Config.ARGB_8888);

   RenderScript renderScript = RenderScript.create(context);

   Allocation blurInput = Allocation.createFromBitmap(renderScript, smallBitmap);
   Allocation blurOutput = Allocation.createFromBitmap(renderScript, bitmap);

   ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript,
    Element.U8_4(renderScript));
   blur.setInput(blurInput);
   blur.setRadius(radius); // radius must be 0 < r <= 25
   blur.forEach(blurOutput);

   blurOutput.copyTo(bitmap);
   renderScript.destroy();

   return bitmap;

  }

  private Bitmap RGB565toARGB888(Bitmap img) throws Exception {
   int numPixels = img.getWidth() * img.getHeight();
   int[] pixels = new int[numPixels];

   //Get JPEG pixels.  Each int is the color values for one pixel.
   img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight());

   //Create a Bitmap of the appropriate format.
   Bitmap result = Bitmap.createBitmap(img.getWidth(), img.getHeight(), Bitmap.Config.ARGB_8888);

   //Set RGB pixels.
   result.setPixels(pixels, 0, result.getWidth(), 0, 0, result.getWidth(), result.getHeight());
   return result;
  }