Java tutorial
/* * Copyright 2013-2015 microG Project Team * * 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 org.microg.gms.checkin; import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.preference.PreferenceManager; import android.support.v4.content.WakefulBroadcastReceiver; import android.util.Log; public class TriggerReceiver extends WakefulBroadcastReceiver { private static final String TAG = "GmsCheckinTrigger"; public static final String PREF_ENABLE_CHECKIN = "checkin_enable_service"; private static final long REGULAR_CHECKIN_INTERVAL = 12 * 60 * 60 * 1000; // 12 hours @Override public void onReceive(Context context, Intent intent) { boolean force = "android.provider.Telephony.SECRET_CODE".equals(intent.getAction()); ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(PREF_ENABLE_CHECKIN, false) || force) { if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction()) && LastCheckinInfo.read(context).lastCheckin > System.currentTimeMillis() - REGULAR_CHECKIN_INTERVAL) { return; } NetworkInfo networkInfo = cm.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.isConnected() || force) { Intent subIntent = new Intent(context, CheckinService.class); subIntent.putExtra(CheckinService.EXTRA_FORCE_CHECKIN, force); startWakefulService(context, subIntent); } } else { Log.d(TAG, "Ignoring " + intent + ": checkin is disabled"); } } }