Java tutorial
//package com.java2s; //License from project: Apache License import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; public class Main { public static Bitmap getCroppedBitmap(Bitmap bitmap) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); if (bitmap.getHeight() > bitmap.getWidth()) { // Dikey canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getWidth() / 2, paint); } else { // Yatay canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getHeight() / 2, paint); } paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); if (bitmap.getHeight() > bitmap.getWidth()) { // Dikey output = Bitmap.createBitmap(output, 0, output.getHeight() / 2 - output.getWidth() / 2, output.getWidth(), output.getWidth()); } else { // Yatay output = Bitmap.createBitmap(output, output.getWidth() / 2 - output.getHeight() / 2, 0, output.getHeight(), output.getHeight()); } return output; } }