Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.BitmapShader; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PorterDuff; import android.graphics.PorterDuffXfermode; import android.graphics.RectF; import android.graphics.Shader.TileMode; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; public class Main { public static Bitmap getRoundedCornerBitmap3(Drawable imageDrawable, int radius) { Bitmap d = ((BitmapDrawable) imageDrawable).getBitmap(); BitmapShader shader = new BitmapShader(d, TileMode.CLAMP, TileMode.CLAMP); int size = Math.min(d.getWidth(), d.getHeight()); Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(output); RectF outerRect = new RectF(0, 0, size, size); // float cornerRadius = radius; Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setShader(shader); paint.setAntiAlias(true); paint.setColor(Color.RED); canvas.drawCircle(outerRect.centerX(), outerRect.centerY(), d.getWidth() / 2, paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); imageDrawable.setBounds(0, 0, size, size); Canvas canvas1 = new Canvas(output); RectF outerRect1 = new RectF(0, 0, size, size); Paint paint1 = new Paint(Paint.ANTI_ALIAS_FLAG); paint1.setShader(shader); paint1.setAntiAlias(true); paint1.setColor(Color.RED); canvas1.drawCircle(outerRect1.centerX(), outerRect1.centerY(), d.getWidth() / 2, paint); paint1.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); return output; } }