mirror of
https://github.com/LawnchairLauncher/lawnchair.git
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101 lines
3.6 KiB
Java
101 lines
3.6 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3;
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import android.app.backup.BackupAgentHelper;
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import android.app.backup.BackupDataInput;
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import android.app.backup.BackupManager;
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import android.content.Context;
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import android.database.Cursor;
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import android.os.ParcelFileDescriptor;
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import android.provider.Settings;
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import android.util.Log;
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import java.io.IOException;
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public class LauncherBackupAgentHelper extends BackupAgentHelper {
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private static final String TAG = "LauncherBackupAgentHelper";
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static final boolean VERBOSE = true;
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static final boolean DEBUG = false;
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private static BackupManager sBackupManager;
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protected static final String SETTING_RESTORE_ENABLED = "launcher_restore_enabled";
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/**
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* Notify the backup manager that out database is dirty.
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*
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* <P>This does not force an immediate backup.
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*
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* @param context application context
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*/
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public static void dataChanged(Context context) {
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if (sBackupManager == null) {
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sBackupManager = new BackupManager(context);
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}
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sBackupManager.dataChanged();
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}
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@Override
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public void onDestroy() {
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// There is only one process accessing this preference file, but the restore
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// modifies the file outside the normal codepaths, so it looks like another
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// process. This forces a reload of the file, in case this process persists.
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String spKey = LauncherAppState.getSharedPreferencesKey();
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getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
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super.onDestroy();
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}
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@Override
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public void onCreate() {
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boolean restoreEnabled = 0 != Settings.Secure.getInt(
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getContentResolver(), SETTING_RESTORE_ENABLED, 1);
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if (VERBOSE) Log.v(TAG, "restore is " + (restoreEnabled ? "enabled" : "disabled"));
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addHelper(LauncherBackupHelper.LAUNCHER_PREFS_PREFIX,
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new LauncherPreferencesBackupHelper(this,
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LauncherAppState.getSharedPreferencesKey(),
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restoreEnabled));
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addHelper(LauncherBackupHelper.LAUNCHER_PREFIX,
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new LauncherBackupHelper(this, restoreEnabled));
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}
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@Override
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public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState)
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throws IOException {
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if (!Utilities.isLmpOrAbove()) {
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// No restore for old devices.
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Log.i(TAG, "You shall not pass!!!");
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Log.d(TAG, "Restore is only supported on devices running Lollipop and above.");
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return;
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}
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super.onRestore(data, appVersionCode, newState);
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// If no favorite was migrated, clear the data and start fresh.
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final Cursor c = getContentResolver().query(
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LauncherSettings.Favorites.CONTENT_URI_NO_NOTIFICATION, null, null, null, null);
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boolean hasData = c.moveToNext();
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c.close();
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if (!hasData) {
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if (VERBOSE) Log.v(TAG, "Nothing was restored, clearing DB");
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LauncherAppState.getLauncherProvider().createEmptyDB();
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}
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}
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}
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