| /* |
| * Copyright (C) 2019 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.settings.network; |
| |
| import android.content.Context; |
| import android.database.ContentObserver; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.provider.Settings; |
| import android.telephony.TelephonyManager; |
| |
| /** |
| * {@link ContentObserver} to listen to update of mobile data change |
| */ |
| public class MobileDataContentObserver extends ContentObserver { |
| private OnMobileDataChangedListener mListener; |
| |
| public MobileDataContentObserver(Handler handler) { |
| super(handler); |
| } |
| |
| /** |
| * Return a URI of mobile data(ON vs OFF) |
| */ |
| public static Uri getObservableUri(Context context, int subId) { |
| Uri uri = Settings.Global.getUriFor(Settings.Global.MOBILE_DATA); |
| TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class); |
| if (telephonyManager.getActiveModemCount() != 1) { |
| uri = Settings.Global.getUriFor(Settings.Global.MOBILE_DATA + subId); |
| } |
| return uri; |
| } |
| |
| public void setOnMobileDataChangedListener(OnMobileDataChangedListener lsn) { |
| mListener = lsn; |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| super.onChange(selfChange); |
| if (mListener != null) { |
| mListener.onMobileDataChanged(); |
| } |
| } |
| |
| public void register(Context context, int subId) { |
| final Uri uri = getObservableUri(context, subId); |
| context.getContentResolver().registerContentObserver(uri, false, this); |
| |
| } |
| |
| public void unRegister(Context context) { |
| context.getContentResolver().unregisterContentObserver(this); |
| } |
| |
| /** |
| * Listener for update of mobile data(ON vs OFF) |
| */ |
| public interface OnMobileDataChangedListener { |
| void onMobileDataChanged(); |
| } |
| } |