1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.latin; 18 19 import android.app.backup.BackupAgentHelper; 20 import android.app.backup.BackupDataInput; 21 import android.app.backup.SharedPreferencesBackupHelper; 22 import android.content.SharedPreferences; 23 import android.os.ParcelFileDescriptor; 24 25 import com.android.inputmethod.latin.settings.LocalSettingsConstants; 26 27 import java.io.IOException; 28 29 /** 30 * Backup/restore agent for LatinIME. 31 * Currently it backs up the default shared preferences. 32 */ 33 public final class BackupAgent extends BackupAgentHelper { 34 private static final String PREF_SUFFIX = "_preferences"; 35 36 @Override 37 public void onCreate() { 38 addHelper("shared_pref", new SharedPreferencesBackupHelper(this, 39 getPackageName() + PREF_SUFFIX)); 40 } 41 42 @Override 43 public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) 44 throws IOException { 45 // Let the restore operation go through 46 super.onRestore(data, appVersionCode, newState); 47 48 // Remove the preferences that we don't want restored. 49 final SharedPreferences.Editor prefEditor = getSharedPreferences( 50 getPackageName() + PREF_SUFFIX, MODE_PRIVATE).edit(); 51 for (final String key : LocalSettingsConstants.PREFS_TO_SKIP_RESTORING) { 52 prefEditor.remove(key); 53 } 54 // Flush the changes to disk. 55 prefEditor.commit(); 56 } 57 } 58
