public static Bitmap createScaledBitmap(Bitmap unscaledBitmap, int dstWidth, int dstHeight,

public static Bitmap createScaledBitmap(Bitmap unscaledBitmap, int dstWidth, int dstHeight,
             ScalingLogic scalingLogic) {
      if(unscaledBitmap ==null)
       return null;
      
      Rect srcRect = calculateSrcRect(unscaledBitmap.getWidth(), unscaledBitmap.getHeight(),
                 dstWidth, dstHeight, scalingLogic);
         Rect dstRect = calculateDstRect(unscaledBitmap.getWidth(), unscaledBitmap.getHeight(),
                 dstWidth, dstHeight, scalingLogic);
         Bitmap scaledBitmap = Bitmap.createBitmap(dstRect.width(), dstRect.height(),
                 Config.ARGB_8888);
         Canvas canvas = new Canvas(scaledBitmap);
         canvas.drawBitmap(unscaledBitmap, srcRect, dstRect, new Paint(Paint.FILTER_BITMAP_FLAG|Paint.ANTI_ALIAS_FLAG));        return scaledBitmap;
     }