Java tutorial
//package com.java2s; /* * Copyright (C) 2015 Lyft, Inc. * * 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.Bitmap; import android.graphics.Canvas; import android.graphics.Rect; import android.graphics.drawable.Drawable; public class Main { public static Bitmap asBitmap(Drawable drawable, int minWidth, int minHeight) { final Rect tmpRect = new Rect(); drawable.copyBounds(tmpRect); if (tmpRect.isEmpty()) { tmpRect.set(0, 0, Math.max(minWidth, drawable.getIntrinsicWidth()), Math.max(minHeight, drawable.getIntrinsicHeight())); drawable.setBounds(tmpRect); } Bitmap bitmap = Bitmap.createBitmap(tmpRect.width(), tmpRect.height(), Bitmap.Config.ARGB_8888); drawable.draw(new Canvas(bitmap)); return bitmap; } }