/* * Copyright (C) 2017 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.launcher3.util; import android.content.ContentResolver; import android.content.Context; import android.database.ContentObserver; import android.os.Handler; import android.provider.Settings; /** * Utility class to listen for secure settings changes */ public class SecureSettingsObserver extends ContentObserver { /** Hidden field Settings.Secure.NOTIFICATION_BADGING */ public static final String NOTIFICATION_BADGING = "notification_badging"; private final ContentResolver mResolver; private final String mKeySetting; private final int mDefaultValue; private final OnChangeListener mOnChangeListener; public SecureSettingsObserver(ContentResolver resolver, OnChangeListener listener, String keySetting, int defaultValue) { super(new Handler()); mResolver = resolver; mOnChangeListener = listener; mKeySetting = keySetting; mDefaultValue = defaultValue; } @Override public void onChange(boolean selfChange) { mOnChangeListener.onSettingsChanged(getValue()); } public boolean getValue() { return Settings.Secure.getInt(mResolver, mKeySetting, mDefaultValue) == 1; } public void register() { mResolver.registerContentObserver(Settings.Secure.getUriFor(mKeySetting), false, this); } public ContentResolver getResolver() { return mResolver; } public void dispatchOnChange() { onChange(true); } public void unregister() { mResolver.unregisterContentObserver(this); } public interface OnChangeListener { void onSettingsChanged(boolean isEnabled); } public static SecureSettingsObserver newNotificationSettingsObserver(Context context, OnChangeListener listener) { return new SecureSettingsObserver( context.getContentResolver(), listener, NOTIFICATION_BADGING, 1); } }