Java tutorial
/* Copyright (C) 2016-2017 Andreas Shimokawa, Daniele Gobbetti This file is part of Gadgetbridge. Gadgetbridge is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Gadgetbridge is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package nodomain.freeyourgadget.gadgetbridge.externalevents; import android.Manifest; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.location.Criteria; import android.location.Location; import android.location.LocationManager; import android.support.v4.app.ActivityCompat; import net.e175.klaus.solarpositioning.DeltaT; import net.e175.klaus.solarpositioning.SPA; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.Calendar; import java.util.GregorianCalendar; import java.util.TimeZone; import nodomain.freeyourgadget.gadgetbridge.BuildConfig; import nodomain.freeyourgadget.gadgetbridge.GBApplication; import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec; import nodomain.freeyourgadget.gadgetbridge.util.Prefs; public class AlarmReceiver extends BroadcastReceiver { private static final Logger LOG = LoggerFactory.getLogger(AlarmReceiver.class); public AlarmReceiver() { Context context = GBApplication.getContext(); Intent intent = new Intent("DAILY_ALARM"); intent.setPackage(BuildConfig.APPLICATION_ID); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, new Intent("DAILY_ALARM"), 0); AlarmManager am = (AlarmManager) (context.getSystemService(Context.ALARM_SERVICE)); am.setInexactRepeating(AlarmManager.RTC_WAKEUP, Calendar.getInstance().getTimeInMillis() + 10000, AlarmManager.INTERVAL_DAY, pendingIntent); } @Override public void onReceive(Context context, Intent intent) { if (!GBApplication.getPrefs().getBoolean("send_sunrise_sunset", false)) { LOG.info("won't send sunrise and sunset events (disabled in preferences)"); return; } LOG.info("will resend sunrise and sunset events"); final GregorianCalendar dateTimeTomorrow = new GregorianCalendar(TimeZone.getTimeZone("UTC")); dateTimeTomorrow.set(Calendar.HOUR, 0); dateTimeTomorrow.set(Calendar.MINUTE, 0); dateTimeTomorrow.set(Calendar.SECOND, 0); dateTimeTomorrow.set(Calendar.MILLISECOND, 0); dateTimeTomorrow.add(GregorianCalendar.DAY_OF_MONTH, 1); /* * rotate ids ud reuse the id from two days ago for tomorrow, this way we will have * sunrise /sunset for 3 days while sending only sunrise/sunset per day */ byte id_tomorrow = (byte) ((dateTimeTomorrow.getTimeInMillis() / (1000L * 60L * 60L * 24L)) % 3); GBApplication.deviceService().onDeleteCalendarEvent(CalendarEventSpec.TYPE_SUNRISE, id_tomorrow); GBApplication.deviceService().onDeleteCalendarEvent(CalendarEventSpec.TYPE_SUNSET, id_tomorrow); Prefs prefs = GBApplication.getPrefs(); float latitude = prefs.getFloat("location_latitude", 0); float longitude = prefs.getFloat("location_longitude", 0); LOG.info("got longitude/latitude from preferences: " + latitude + "/" + longitude); if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED && prefs.getBoolean("use_updated_location_if_available", false)) { LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); String provider = locationManager.getBestProvider(criteria, false); if (provider != null) { Location lastKnownLocation = locationManager.getLastKnownLocation(provider); if (lastKnownLocation != null) { latitude = (float) lastKnownLocation.getLatitude(); longitude = (float) lastKnownLocation.getLongitude(); LOG.info("got longitude/latitude from last known location: " + latitude + "/" + longitude); } } } GregorianCalendar[] sunriseTransitSetTomorrow = SPA.calculateSunriseTransitSet(dateTimeTomorrow, latitude, longitude, DeltaT.estimate(dateTimeTomorrow)); CalendarEventSpec calendarEventSpec = new CalendarEventSpec(); calendarEventSpec.durationInSeconds = 0; calendarEventSpec.description = null; calendarEventSpec.type = CalendarEventSpec.TYPE_SUNRISE; calendarEventSpec.title = "Sunrise"; if (sunriseTransitSetTomorrow[0] != null) { calendarEventSpec.id = id_tomorrow; calendarEventSpec.timestamp = (int) (sunriseTransitSetTomorrow[0].getTimeInMillis() / 1000); GBApplication.deviceService().onAddCalendarEvent(calendarEventSpec); } calendarEventSpec.type = CalendarEventSpec.TYPE_SUNSET; calendarEventSpec.title = "Sunset"; if (sunriseTransitSetTomorrow[2] != null) { calendarEventSpec.id = id_tomorrow; calendarEventSpec.timestamp = (int) (sunriseTransitSetTomorrow[2].getTimeInMillis() / 1000); GBApplication.deviceService().onAddCalendarEvent(calendarEventSpec); } } }