LatinIME/java/src/com/android/inputmethod/latin/BackupAgent.java

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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
package com.android.inputmethod.latin;
import android.app.backup.BackupAgentHelper;
import android.app.backup.BackupDataInput;
import android.app.backup.SharedPreferencesBackupHelper;
import android.content.SharedPreferences;
import android.os.ParcelFileDescriptor;
import com.android.inputmethod.latin.settings.LocalSettingsConstants;
import java.io.IOException;
/**
* Backup/restore agent for LatinIME.
* Currently it backs up the default shared preferences.
*/
public final class BackupAgent extends BackupAgentHelper {
private static final String PREF_SUFFIX = "_preferences";
@Override
public void onCreate() {
addHelper("shared_pref", new SharedPreferencesBackupHelper(this,
getPackageName() + PREF_SUFFIX));
}
@Override
public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState)
throws IOException {
// Let the restore operation go through
super.onRestore(data, appVersionCode, newState);
// Remove the preferences that we don't want restored.
final SharedPreferences.Editor prefEditor = getSharedPreferences(
getPackageName() + PREF_SUFFIX, MODE_PRIVATE).edit();
for (final String key : LocalSettingsConstants.PREFS_TO_SKIP_RESTORING) {
prefEditor.remove(key);
}
// Flush the changes to disk.
prefEditor.commit();
}
}