Java tutorial
//package com.java2s; /* * Copyright (C) 2016 Jorge Ruesga * * 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.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; public class Main { public static Bitmap convertToBitmap(Drawable dw) { Bitmap bitmap; if (dw instanceof BitmapDrawable) { BitmapDrawable bitmapDrawable = (BitmapDrawable) dw; if (bitmapDrawable.getBitmap() != null) { return bitmapDrawable.getBitmap(); } } if (dw.getIntrinsicWidth() <= 0 || dw.getIntrinsicHeight() <= 0) { bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); } else { bitmap = Bitmap.createBitmap(dw.getIntrinsicWidth(), dw.getIntrinsicHeight(), Bitmap.Config.ARGB_8888); } Canvas canvas = new Canvas(bitmap); dw.setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); dw.draw(canvas); return bitmap; } }