Java tutorial
//package com.java2s; //License from project: Open Source License import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuff; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; public class Main { public static Bitmap formatUserAvatar(Bitmap photo) { int maskColor = 0xff424242; Paint cornerPaint = new Paint(); cornerPaint.setAntiAlias(true); cornerPaint.setColor(maskColor); Rect roundedCornerRect = new Rect(0, 0, 256, 256); RectF roundedCornerRectF = new RectF(roundedCornerRect); Bitmap roundedCornerBitmap = Bitmap.createBitmap(256, 256, Bitmap.Config.ARGB_8888); Canvas roundedCornerCanvas = new Canvas(roundedCornerBitmap); roundedCornerCanvas.drawARGB(0, 0, 0, 0); roundedCornerCanvas.drawRoundRect(roundedCornerRectF, 128, 128, cornerPaint); cornerPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); Bitmap scaledBitmap = Bitmap.createScaledBitmap(photo, 256, 256, true); roundedCornerCanvas.drawBitmap(scaledBitmap, roundedCornerRect, roundedCornerRect, cornerPaint); return roundedCornerBitmap; } }