Java tutorial
//package com.java2s; /** * Copyright (C) 2014 * Bearstouch Software : <mail@bearstouch.com> * * This file is part of Bearstouch Android Lib. * * 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.content.Context; import android.content.SharedPreferences; import android.os.Environment; import android.util.Log; import java.io.File; import java.io.FileOutputStream; import java.util.Iterator; import java.util.Map; import java.util.Properties; public class Main { public static boolean savePreferencesInExternal(Context ctx, SharedPreferences pref) { Properties propfile = new Properties(); Map<String, ?> keymap = pref.getAll(); Iterator<String> keyit = keymap.keySet().iterator(); Log.d("External", "Saving prefrences to external Storages"); while (keyit.hasNext()) { String key = keyit.next(); propfile.put(key, keymap.get(key)); } if (isExternalStorageAvailableforWriting() == true) { try { propfile.storeToXML(new FileOutputStream(new File(ctx.getExternalFilesDir(null), "install_info")), null); } catch (Exception e) { e.printStackTrace(); } Log.d("External", "Saved prefrences to external "); return true; } else { Log.d("External", "Failed to Save prefrences for external "); return false; } } public static boolean isExternalStorageAvailableforWriting() { String state = Environment.getExternalStorageState(); if (Environment.MEDIA_MOUNTED.equals(state)) { // We can read and write the media return true; } else { return false; } } }