Java tutorial
//package com.java2s; /* 2017 Grouxho (esp-desarrolladores.com) 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 java.io.File; import java.io.FileOutputStream; public class Main { public static boolean save_png_from_bitmap(Bitmap bm, String filename) { boolean resultado = true; File f = new File(filename); if (f.exists()) f.delete(); try { FileOutputStream o_s = new FileOutputStream(f); bm.compress(Bitmap.CompressFormat.PNG, 100, o_s); o_s.flush(); o_s.close(); } catch (Exception e) { resultado = false; e.printStackTrace(); } return resultado; } }