Java tutorial
//package com.java2s; /* LinphoneMiniUtils.java Copyright (C) 2014 Belledonne Communications, Grenoble, France This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import android.content.Context; public class Main { public static void copyIfNotExist(Context context, int ressourceId, String target) throws IOException { File lFileToCopy = new File(target); if (!lFileToCopy.exists()) { copyFromPackage(context, ressourceId, lFileToCopy.getName()); } } public static void copyFromPackage(Context context, int ressourceId, String target) throws IOException { FileOutputStream lOutputStream = context.openFileOutput(target, 0); InputStream lInputStream = context.getResources().openRawResource(ressourceId); int readByte; byte[] buff = new byte[8048]; while ((readByte = lInputStream.read(buff)) != -1) { lOutputStream.write(buff, 0, readByte); } lOutputStream.flush(); lOutputStream.close(); lInputStream.close(); } }