Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
| 19 | import android.app.AlarmManager; |
| 20 | import android.app.PendingIntent; |
| 21 | import android.content.BroadcastReceiver; |
| 22 | import android.content.Context; |
| 23 | import android.content.Intent; |
| 24 | import android.content.IntentFilter; |
| 25 | import android.location.Criteria; |
| 26 | import android.location.Location; |
| 27 | import android.location.LocationListener; |
| 28 | import android.location.LocationManager; |
| 29 | import android.os.Bundle; |
| 30 | import android.os.Handler; |
| 31 | import android.os.Message; |
| 32 | import android.os.SystemClock; |
| 33 | import android.text.format.DateUtils; |
| 34 | import android.text.format.Time; |
| 35 | import android.util.Slog; |
| 36 | |
| 37 | import java.text.DateFormat; |
| 38 | import java.util.ArrayList; |
| 39 | import java.util.Date; |
| 40 | import java.util.Iterator; |
| 41 | |
| 42 | import libcore.util.Objects; |
| 43 | |
| 44 | /** |
| 45 | * Figures out whether it's twilight time based on the user's location. |
| 46 | * |
| 47 | * Used by the UI mode manager and other components to adjust night mode |
| 48 | * effects based on sunrise and sunset. |
| 49 | */ |
| 50 | public final class TwilightService { |
| 51 | private static final String TAG = "TwilightService"; |
| 52 | |
Jeff Brown | b5b710a | 2012-08-22 13:12:48 -0700 | [diff] [blame] | 53 | private static final boolean DEBUG = false; |
Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 54 | |
| 55 | private static final String ACTION_UPDATE_TWILIGHT_STATE = |
| 56 | "com.android.server.action.UPDATE_TWILIGHT_STATE"; |
| 57 | |
| 58 | private final Context mContext; |
| 59 | private final AlarmManager mAlarmManager; |
| 60 | private final LocationManager mLocationManager; |
| 61 | private final LocationHandler mLocationHandler; |
| 62 | |
| 63 | private final Object mLock = new Object(); |
| 64 | |
| 65 | private final ArrayList<TwilightListenerRecord> mListeners = |
| 66 | new ArrayList<TwilightListenerRecord>(); |
| 67 | |
| 68 | private boolean mSystemReady; |
| 69 | |
| 70 | private TwilightState mTwilightState; |
| 71 | |
| 72 | public TwilightService(Context context) { |
| 73 | mContext = context; |
| 74 | |
| 75 | mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); |
| 76 | mLocationManager = (LocationManager)mContext.getSystemService(Context.LOCATION_SERVICE); |
| 77 | mLocationHandler = new LocationHandler(); |
| 78 | } |
| 79 | |
| 80 | void systemReady() { |
| 81 | synchronized (mLock) { |
| 82 | mSystemReady = true; |
| 83 | |
| 84 | IntentFilter filter = new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED); |
| 85 | filter.addAction(Intent.ACTION_TIME_CHANGED); |
| 86 | filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); |
| 87 | filter.addAction(ACTION_UPDATE_TWILIGHT_STATE); |
| 88 | mContext.registerReceiver(mUpdateLocationReceiver, filter); |
| 89 | |
| 90 | if (!mListeners.isEmpty()) { |
| 91 | mLocationHandler.enableLocationUpdates(); |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Gets the current twilight state. |
| 98 | * |
| 99 | * @return The current twilight state, or null if no information is available. |
| 100 | */ |
| 101 | public TwilightState getCurrentState() { |
| 102 | synchronized (mLock) { |
| 103 | return mTwilightState; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Listens for twilight time. |
| 109 | * |
| 110 | * @param listener The listener. |
| 111 | * @param handler The handler on which to post calls into the listener. |
| 112 | */ |
| 113 | public void registerListener(TwilightListener listener, Handler handler) { |
| 114 | synchronized (mLock) { |
| 115 | mListeners.add(new TwilightListenerRecord(listener, handler)); |
| 116 | |
| 117 | if (mSystemReady && mListeners.size() == 1) { |
| 118 | mLocationHandler.enableLocationUpdates(); |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | private void setTwilightState(TwilightState state) { |
| 124 | synchronized (mLock) { |
| 125 | if (!Objects.equal(mTwilightState, state)) { |
| 126 | if (DEBUG) { |
| 127 | Slog.d(TAG, "Twilight state changed: " + state); |
| 128 | } |
| 129 | |
| 130 | mTwilightState = state; |
| 131 | int count = mListeners.size(); |
| 132 | for (int i = 0; i < count; i++) { |
| 133 | mListeners.get(i).post(); |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | // The user has moved if the accuracy circles of the two locations don't overlap. |
| 140 | private static boolean hasMoved(Location from, Location to) { |
| 141 | if (to == null) { |
| 142 | return false; |
| 143 | } |
| 144 | |
| 145 | if (from == null) { |
| 146 | return true; |
| 147 | } |
| 148 | |
| 149 | // if new location is older than the current one, the device hasn't moved. |
Philip Milne | 4118012 | 2012-09-26 11:29:25 -0700 | [diff] [blame^] | 150 | if (to.getElapsedRealtimeNanos() < from.getElapsedRealtimeNanos()) { |
Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 151 | return false; |
| 152 | } |
| 153 | |
| 154 | // Get the distance between the two points. |
| 155 | float distance = from.distanceTo(to); |
| 156 | |
| 157 | // Get the total accuracy radius for both locations. |
| 158 | float totalAccuracy = from.getAccuracy() + to.getAccuracy(); |
| 159 | |
| 160 | // If the distance is greater than the combined accuracy of the two |
| 161 | // points then they can't overlap and hence the user has moved. |
| 162 | return distance >= totalAccuracy; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Describes whether it is day or night. |
| 167 | * This object is immutable. |
| 168 | */ |
| 169 | public static final class TwilightState { |
| 170 | private final boolean mIsNight; |
| 171 | private final long mYesterdaySunset; |
| 172 | private final long mTodaySunrise; |
| 173 | private final long mTodaySunset; |
| 174 | private final long mTomorrowSunrise; |
| 175 | |
| 176 | TwilightState(boolean isNight, |
| 177 | long yesterdaySunset, |
| 178 | long todaySunrise, long todaySunset, |
| 179 | long tomorrowSunrise) { |
| 180 | mIsNight = isNight; |
| 181 | mYesterdaySunset = yesterdaySunset; |
| 182 | mTodaySunrise = todaySunrise; |
| 183 | mTodaySunset = todaySunset; |
| 184 | mTomorrowSunrise = tomorrowSunrise; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Returns true if it is currently night time. |
| 189 | */ |
| 190 | public boolean isNight() { |
| 191 | return mIsNight; |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * Returns the time of yesterday's sunset in the System.currentTimeMillis() timebase, |
| 196 | * or -1 if the sun never sets. |
| 197 | */ |
| 198 | public long getYesterdaySunset() { |
| 199 | return mYesterdaySunset; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Returns the time of today's sunrise in the System.currentTimeMillis() timebase, |
| 204 | * or -1 if the sun never rises. |
| 205 | */ |
| 206 | public long getTodaySunrise() { |
| 207 | return mTodaySunrise; |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Returns the time of today's sunset in the System.currentTimeMillis() timebase, |
| 212 | * or -1 if the sun never sets. |
| 213 | */ |
| 214 | public long getTodaySunset() { |
| 215 | return mTodaySunset; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Returns the time of tomorrow's sunrise in the System.currentTimeMillis() timebase, |
| 220 | * or -1 if the sun never rises. |
| 221 | */ |
| 222 | public long getTomorrowSunrise() { |
| 223 | return mTomorrowSunrise; |
| 224 | } |
| 225 | |
| 226 | @Override |
| 227 | public boolean equals(Object o) { |
| 228 | return o instanceof TwilightState && equals((TwilightState)o); |
| 229 | } |
| 230 | |
| 231 | public boolean equals(TwilightState other) { |
| 232 | return other != null |
| 233 | && mIsNight == other.mIsNight |
| 234 | && mYesterdaySunset == other.mYesterdaySunset |
| 235 | && mTodaySunrise == other.mTodaySunrise |
| 236 | && mTodaySunset == other.mTodaySunset |
| 237 | && mTomorrowSunrise == other.mTomorrowSunrise; |
| 238 | } |
| 239 | |
| 240 | @Override |
| 241 | public int hashCode() { |
| 242 | return 0; // don't care |
| 243 | } |
| 244 | |
| 245 | @Override |
| 246 | public String toString() { |
| 247 | DateFormat f = DateFormat.getDateTimeInstance(); |
| 248 | return "{TwilightState: isNight=" + mIsNight |
| 249 | + ", mYesterdaySunset=" + f.format(new Date(mYesterdaySunset)) |
| 250 | + ", mTodaySunrise=" + f.format(new Date(mTodaySunrise)) |
| 251 | + ", mTodaySunset=" + f.format(new Date(mTodaySunset)) |
| 252 | + ", mTomorrowSunrise=" + f.format(new Date(mTomorrowSunrise)) |
| 253 | + "}"; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Listener for changes in twilight state. |
| 259 | */ |
| 260 | public interface TwilightListener { |
| 261 | public void onTwilightStateChanged(); |
| 262 | } |
| 263 | |
| 264 | private static final class TwilightListenerRecord implements Runnable { |
| 265 | private final TwilightListener mListener; |
| 266 | private final Handler mHandler; |
| 267 | |
| 268 | public TwilightListenerRecord(TwilightListener listener, Handler handler) { |
| 269 | mListener = listener; |
| 270 | mHandler = handler; |
| 271 | } |
| 272 | |
| 273 | public void post() { |
| 274 | mHandler.post(this); |
| 275 | } |
| 276 | |
| 277 | @Override |
| 278 | public void run() { |
| 279 | mListener.onTwilightStateChanged(); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | private final class LocationHandler extends Handler { |
| 284 | private static final int MSG_ENABLE_LOCATION_UPDATES = 1; |
| 285 | private static final int MSG_GET_NEW_LOCATION_UPDATE = 2; |
| 286 | private static final int MSG_PROCESS_NEW_LOCATION = 3; |
| 287 | private static final int MSG_DO_TWILIGHT_UPDATE = 4; |
| 288 | |
| 289 | private static final long LOCATION_UPDATE_MS = 24 * DateUtils.HOUR_IN_MILLIS; |
| 290 | private static final long MIN_LOCATION_UPDATE_MS = 30 * DateUtils.MINUTE_IN_MILLIS; |
| 291 | private static final float LOCATION_UPDATE_DISTANCE_METER = 1000 * 20; |
| 292 | private static final long LOCATION_UPDATE_ENABLE_INTERVAL_MIN = 5000; |
| 293 | private static final long LOCATION_UPDATE_ENABLE_INTERVAL_MAX = |
| 294 | 15 * DateUtils.MINUTE_IN_MILLIS; |
| 295 | private static final double FACTOR_GMT_OFFSET_LONGITUDE = |
| 296 | 1000.0 * 360.0 / DateUtils.DAY_IN_MILLIS; |
| 297 | |
| 298 | private boolean mPassiveListenerEnabled; |
| 299 | private boolean mNetworkListenerEnabled; |
| 300 | private boolean mDidFirstInit; |
| 301 | private long mLastNetworkRegisterTime = -MIN_LOCATION_UPDATE_MS; |
| 302 | private long mLastUpdateInterval; |
| 303 | private Location mLocation; |
| 304 | private final TwilightCalculator mTwilightCalculator = new TwilightCalculator(); |
| 305 | |
| 306 | public void processNewLocation(Location location) { |
| 307 | Message msg = obtainMessage(MSG_PROCESS_NEW_LOCATION, location); |
| 308 | sendMessage(msg); |
| 309 | } |
| 310 | |
| 311 | public void enableLocationUpdates() { |
| 312 | sendEmptyMessage(MSG_ENABLE_LOCATION_UPDATES); |
| 313 | } |
| 314 | |
| 315 | public void requestLocationUpdate() { |
| 316 | sendEmptyMessage(MSG_GET_NEW_LOCATION_UPDATE); |
| 317 | } |
| 318 | |
| 319 | public void requestTwilightUpdate() { |
| 320 | sendEmptyMessage(MSG_DO_TWILIGHT_UPDATE); |
| 321 | } |
| 322 | |
| 323 | @Override |
| 324 | public void handleMessage(Message msg) { |
| 325 | switch (msg.what) { |
| 326 | case MSG_PROCESS_NEW_LOCATION: { |
| 327 | final Location location = (Location)msg.obj; |
| 328 | final boolean hasMoved = hasMoved(mLocation, location); |
| 329 | final boolean hasBetterAccuracy = mLocation == null |
| 330 | || location.getAccuracy() < mLocation.getAccuracy(); |
| 331 | if (DEBUG) { |
| 332 | Slog.d(TAG, "Processing new location: " + location |
| 333 | + ", hasMoved=" + hasMoved |
| 334 | + ", hasBetterAccuracy=" + hasBetterAccuracy); |
| 335 | } |
| 336 | if (hasMoved || hasBetterAccuracy) { |
| 337 | setLocation(location); |
| 338 | } |
| 339 | break; |
| 340 | } |
| 341 | |
| 342 | case MSG_GET_NEW_LOCATION_UPDATE: |
| 343 | if (!mNetworkListenerEnabled) { |
| 344 | // Don't do anything -- we are still trying to get a |
| 345 | // location. |
| 346 | return; |
| 347 | } |
| 348 | if ((mLastNetworkRegisterTime + MIN_LOCATION_UPDATE_MS) >= |
| 349 | SystemClock.elapsedRealtime()) { |
| 350 | // Don't do anything -- it hasn't been long enough |
| 351 | // since we last requested an update. |
| 352 | return; |
| 353 | } |
| 354 | |
| 355 | // Unregister the current location monitor, so we can |
| 356 | // register a new one for it to get an immediate update. |
| 357 | mNetworkListenerEnabled = false; |
| 358 | mLocationManager.removeUpdates(mEmptyLocationListener); |
| 359 | |
| 360 | // Fall through to re-register listener. |
| 361 | case MSG_ENABLE_LOCATION_UPDATES: |
| 362 | // enable network provider to receive at least location updates for a given |
| 363 | // distance. |
| 364 | boolean networkLocationEnabled; |
| 365 | try { |
| 366 | networkLocationEnabled = |
| 367 | mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); |
| 368 | } catch (Exception e) { |
| 369 | // we may get IllegalArgumentException if network location provider |
| 370 | // does not exist or is not yet installed. |
| 371 | networkLocationEnabled = false; |
| 372 | } |
| 373 | if (!mNetworkListenerEnabled && networkLocationEnabled) { |
| 374 | mNetworkListenerEnabled = true; |
| 375 | mLastNetworkRegisterTime = SystemClock.elapsedRealtime(); |
| 376 | mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, |
| 377 | LOCATION_UPDATE_MS, 0, mEmptyLocationListener); |
| 378 | |
| 379 | if (!mDidFirstInit) { |
| 380 | mDidFirstInit = true; |
| 381 | if (mLocation == null) { |
| 382 | retrieveLocation(); |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | // enable passive provider to receive updates from location fixes (gps |
| 388 | // and network). |
| 389 | boolean passiveLocationEnabled; |
| 390 | try { |
| 391 | passiveLocationEnabled = |
| 392 | mLocationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER); |
| 393 | } catch (Exception e) { |
| 394 | // we may get IllegalArgumentException if passive location provider |
| 395 | // does not exist or is not yet installed. |
| 396 | passiveLocationEnabled = false; |
| 397 | } |
| 398 | |
| 399 | if (!mPassiveListenerEnabled && passiveLocationEnabled) { |
| 400 | mPassiveListenerEnabled = true; |
| 401 | mLocationManager.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, |
| 402 | 0, LOCATION_UPDATE_DISTANCE_METER , mLocationListener); |
| 403 | } |
| 404 | |
| 405 | if (!(mNetworkListenerEnabled && mPassiveListenerEnabled)) { |
| 406 | mLastUpdateInterval *= 1.5; |
| 407 | if (mLastUpdateInterval == 0) { |
| 408 | mLastUpdateInterval = LOCATION_UPDATE_ENABLE_INTERVAL_MIN; |
| 409 | } else if (mLastUpdateInterval > LOCATION_UPDATE_ENABLE_INTERVAL_MAX) { |
| 410 | mLastUpdateInterval = LOCATION_UPDATE_ENABLE_INTERVAL_MAX; |
| 411 | } |
| 412 | sendEmptyMessageDelayed(MSG_ENABLE_LOCATION_UPDATES, mLastUpdateInterval); |
| 413 | } |
| 414 | break; |
| 415 | |
| 416 | case MSG_DO_TWILIGHT_UPDATE: |
| 417 | updateTwilightState(); |
| 418 | break; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | private void retrieveLocation() { |
| 423 | Location location = null; |
| 424 | final Iterator<String> providers = |
| 425 | mLocationManager.getProviders(new Criteria(), true).iterator(); |
| 426 | while (providers.hasNext()) { |
| 427 | final Location lastKnownLocation = |
| 428 | mLocationManager.getLastKnownLocation(providers.next()); |
| 429 | // pick the most recent location |
| 430 | if (location == null || (lastKnownLocation != null && |
Philip Milne | 4118012 | 2012-09-26 11:29:25 -0700 | [diff] [blame^] | 431 | location.getElapsedRealtimeNanos() < |
| 432 | lastKnownLocation.getElapsedRealtimeNanos())) { |
Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 433 | location = lastKnownLocation; |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | // In the case there is no location available (e.g. GPS fix or network location |
| 438 | // is not available yet), the longitude of the location is estimated using the timezone, |
| 439 | // latitude and accuracy are set to get a good average. |
| 440 | if (location == null) { |
| 441 | Time currentTime = new Time(); |
| 442 | currentTime.set(System.currentTimeMillis()); |
| 443 | double lngOffset = FACTOR_GMT_OFFSET_LONGITUDE * |
| 444 | (currentTime.gmtoff - (currentTime.isDst > 0 ? 3600 : 0)); |
| 445 | location = new Location("fake"); |
| 446 | location.setLongitude(lngOffset); |
| 447 | location.setLatitude(0); |
| 448 | location.setAccuracy(417000.0f); |
| 449 | location.setTime(System.currentTimeMillis()); |
Philip Milne | 4118012 | 2012-09-26 11:29:25 -0700 | [diff] [blame^] | 450 | location.setElapsedRealtimeNanos(SystemClock.elapsedRealtimeNanos()); |
Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 451 | |
| 452 | if (DEBUG) { |
| 453 | Slog.d(TAG, "Estimated location from timezone: " + location); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | setLocation(location); |
| 458 | } |
| 459 | |
| 460 | private void setLocation(Location location) { |
| 461 | mLocation = location; |
| 462 | updateTwilightState(); |
| 463 | } |
| 464 | |
| 465 | private void updateTwilightState() { |
Jeff Brown | b5b710a | 2012-08-22 13:12:48 -0700 | [diff] [blame] | 466 | if (mLocation == null) { |
| 467 | setTwilightState(null); |
| 468 | return; |
| 469 | } |
| 470 | |
Jeff Brown | 2416e09 | 2012-08-21 22:12:20 -0700 | [diff] [blame] | 471 | final long now = System.currentTimeMillis(); |
| 472 | |
| 473 | // calculate yesterday's twilight |
| 474 | mTwilightCalculator.calculateTwilight(now - DateUtils.DAY_IN_MILLIS, |
| 475 | mLocation.getLatitude(), mLocation.getLongitude()); |
| 476 | final long yesterdaySunset = mTwilightCalculator.mSunset; |
| 477 | |
| 478 | // calculate today's twilight |
| 479 | mTwilightCalculator.calculateTwilight(now, |
| 480 | mLocation.getLatitude(), mLocation.getLongitude()); |
| 481 | final boolean isNight = (mTwilightCalculator.mState == TwilightCalculator.NIGHT); |
| 482 | final long todaySunrise = mTwilightCalculator.mSunrise; |
| 483 | final long todaySunset = mTwilightCalculator.mSunset; |
| 484 | |
| 485 | // calculate tomorrow's twilight |
| 486 | mTwilightCalculator.calculateTwilight(now + DateUtils.DAY_IN_MILLIS, |
| 487 | mLocation.getLatitude(), mLocation.getLongitude()); |
| 488 | final long tomorrowSunrise = mTwilightCalculator.mSunrise; |
| 489 | |
| 490 | // set twilight state |
| 491 | TwilightState state = new TwilightState(isNight, yesterdaySunset, |
| 492 | todaySunrise, todaySunset, tomorrowSunrise); |
| 493 | if (DEBUG) { |
| 494 | Slog.d(TAG, "Updating twilight state: " + state); |
| 495 | } |
| 496 | setTwilightState(state); |
| 497 | |
| 498 | // schedule next update |
| 499 | long nextUpdate = 0; |
| 500 | if (todaySunrise == -1 || todaySunset == -1) { |
| 501 | // In the case the day or night never ends the update is scheduled 12 hours later. |
| 502 | nextUpdate = now + 12 * DateUtils.HOUR_IN_MILLIS; |
| 503 | } else { |
| 504 | // add some extra time to be on the safe side. |
| 505 | nextUpdate += DateUtils.MINUTE_IN_MILLIS; |
| 506 | |
| 507 | if (now > todaySunset) { |
| 508 | nextUpdate += tomorrowSunrise; |
| 509 | } else if (now > todaySunrise) { |
| 510 | nextUpdate += todaySunset; |
| 511 | } else { |
| 512 | nextUpdate += todaySunrise; |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | if (DEBUG) { |
| 517 | Slog.d(TAG, "Next update in " + (nextUpdate - now) + " ms"); |
| 518 | } |
| 519 | |
| 520 | Intent updateIntent = new Intent(ACTION_UPDATE_TWILIGHT_STATE); |
| 521 | PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, updateIntent, 0); |
| 522 | mAlarmManager.cancel(pendingIntent); |
| 523 | mAlarmManager.set(AlarmManager.RTC_WAKEUP, nextUpdate, pendingIntent); |
| 524 | } |
| 525 | }; |
| 526 | |
| 527 | private final BroadcastReceiver mUpdateLocationReceiver = new BroadcastReceiver() { |
| 528 | @Override |
| 529 | public void onReceive(Context context, Intent intent) { |
| 530 | if (Intent.ACTION_AIRPLANE_MODE_CHANGED.equals(intent.getAction()) |
| 531 | && !intent.getBooleanExtra("state", false)) { |
| 532 | // Airplane mode is now off! |
| 533 | mLocationHandler.requestLocationUpdate(); |
| 534 | return; |
| 535 | } |
| 536 | |
| 537 | // Time zone has changed or alarm expired. |
| 538 | mLocationHandler.requestTwilightUpdate(); |
| 539 | } |
| 540 | }; |
| 541 | |
| 542 | // A LocationListener to initialize the network location provider. The location updates |
| 543 | // are handled through the passive location provider. |
| 544 | private final LocationListener mEmptyLocationListener = new LocationListener() { |
| 545 | public void onLocationChanged(Location location) { |
| 546 | } |
| 547 | |
| 548 | public void onProviderDisabled(String provider) { |
| 549 | } |
| 550 | |
| 551 | public void onProviderEnabled(String provider) { |
| 552 | } |
| 553 | |
| 554 | public void onStatusChanged(String provider, int status, Bundle extras) { |
| 555 | } |
| 556 | }; |
| 557 | |
| 558 | private final LocationListener mLocationListener = new LocationListener() { |
| 559 | public void onLocationChanged(Location location) { |
| 560 | mLocationHandler.processNewLocation(location); |
| 561 | } |
| 562 | |
| 563 | public void onProviderDisabled(String provider) { |
| 564 | } |
| 565 | |
| 566 | public void onProviderEnabled(String provider) { |
| 567 | } |
| 568 | |
| 569 | public void onStatusChanged(String provider, int status, Bundle extras) { |
| 570 | } |
| 571 | }; |
| 572 | } |