There is filters library for android: android-image-filter
BitmapFilter.changeStyle(originBitmap, BitmapFilter.PIXELATE_STYLE, pixelSize);
It doesn't produce image like you posted so you will need to do some improvements.
Question
I am looking reference code for achieving Pixelation effect on android image view.Basically I want to apply different effects on image.I have done some other effects like blurry effect but I am not able to found exact solutions for same.I am looking effect shown on attach image.
Solution
There is filters library for android: android-image-filter
BitmapFilter.changeStyle(originBitmap, BitmapFilter.PIXELATE_STYLE, pixelSize);
It doesn't produce image like you posted so you will need to do some improvements.