Java tutorial
//package com.java2s; /* * Jitsi, the OpenSource Java VoIP and Instant Messaging client. * * Copyright @ 2015 Atlassian Pty Ltd * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import android.graphics.*; public class Main { /** * Creates a <tt>Bitmap</tt> with rounded corners. * @param bitmap the bitmap that will have it's corners rounded. * @param factor factor used to calculate corners radius based on width * and height of the image. * @return a <tt>Bitmap</tt> with rounded corners created from given * <tt>bitmap</tt>. */ public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float factor) { Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.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()); final RectF rectF = new RectF(rect); paint.setAntiAlias(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(color); float rX = ((float) bitmap.getWidth()) * factor; float rY = ((float) bitmap.getHeight()) * factor; //float r = (rX+rY)/2; canvas.drawRoundRect(rectF, rX, rY, paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(bitmap, rect, rect, paint); return output; } }