我已经成功添加了带有标志 NEVER_EXPIRE 的地理围栏。一切似乎都运行良好。
但是现在在测试时我发现如果我停止定位服务地理围栏将停止按预期工作。此外，当我再次启动定位服务时，我之前添加的地理围栏应该再次开始工作，但不会生成任何通知，而且一旦禁用定位服务，地理围栏似乎会自动删除。而且我必须再次设置所有位置以恢复工作状态的地理围栏。
任何建议或任何想法为什么它会这样？
编辑::
当设备关闭/重新启动等时也会出现类似的问题。因此，如果定位服务被禁用/设备重新启动，基本上所有注册的地理围栏都将过期。我试图通过 Session 处理其中的一些问题，但我正在寻找一种解决方案，通过该解决方案，我们可以在启用位置服务时将地理围栏设置回原处。
最佳答案
为了在后台观看，我遇到了同样的问题，并且能够通过将示例代码从 IntentService 更改为 BroadcastReceiver 来解决它。所有详细信息都可以在我的帖子中找到:
Android Geofence eventually stop getting transition intents
这就是我所说的(以防有人懒得点击链接):
因此，在稍微尝试一下之后，看起来示例代码中定义的 ReceiveTransitionsIntentService 将在应用程序不在时停止接收通知。我认为这是示例代码的一个大问题......似乎这会让像我这样的人绊倒。
所以我改用了广播接收器，到目前为止它似乎在我的测试中工作。
将此添加到 list :
<receiver android:name="com.aol.android.geofence.GeofenceReceiver"
android:exported="false">
<intent-filter >
<action android:name="com.aol.android.geofence.ACTION_RECEIVE_GEOFENCE"/>
</intent-filter>
</receiver>
然后在 GeofenceRequester 类中，您需要更改 createRequestPendingIntent 方法，以便它转到您的 BroadcastReceiver 而不是 ReceiveTransitionsIntentService
private PendingIntent createRequestPendingIntent() {
// If the PendingIntent already exists
if (null != mGeofencePendingIntent) {
// Return the existing intent
return mGeofencePendingIntent;
// If no PendingIntent exists
} else {
// Create an Intent pointing to the IntentService
Intent intent = new Intent("com.aol.android.geofence.ACTION_RECEIVE_GEOFENCE");
// Intent intent = new Intent(context, ReceiveTransitionsIntentService.class);
/*
* Return a PendingIntent to start the IntentService.
* Always create a PendingIntent sent to Location Services
* with FLAG_UPDATE_CURRENT, so that sending the PendingIntent
* again updates the original. Otherwise, Location Services
* can't match the PendingIntent to requests made with it.
*/
return PendingIntent.getBroadcast(
context,
0,
intent,
PendingIntent.FLAG_UPDATE_CURRENT);
}
}
然后我添加了如下所示的 GeofenceReceiver 类:
public class GeofenceReceiver extends BroadcastReceiver {
Context context;
Intent broadcastIntent = new Intent();
@Override
public void onReceive(Context context, Intent intent) {
this.context = context;
broadcastIntent.addCategory(GeofenceUtils.CATEGORY_LOCATION_SERVICES);
if (LocationClient.hasError(intent)) {
handleError(intent);
} else {
handleEnterExit(intent);
}
}
private void handleError(Intent intent){
// Get the error code
int errorCode = LocationClient.getErrorCode(intent);
// Get the error message
String errorMessage = LocationServiceErrorMessages.getErrorString(
context, errorCode);
// Log the error
Log.e(GeofenceUtils.APPTAG,
context.getString(R.string.geofence_transition_error_detail,
errorMessage));
// Set the action and error message for the broadcast intent
broadcastIntent
.setAction(GeofenceUtils.ACTION_GEOFENCE_ERROR)
.putExtra(GeofenceUtils.EXTRA_GEOFENCE_STATUS, errorMessage);
// Broadcast the error *locally* to other components in this app
LocalBroadcastManager.getInstance(context).sendBroadcast(
broadcastIntent);
}
private void handleEnterExit(Intent intent) {
// Get the type of transition (entry or exit)
int transition = LocationClient.getGeofenceTransition(intent);
// Test that a valid transition was reported
if ((transition == Geofence.GEOFENCE_TRANSITION_ENTER)
|| (transition == Geofence.GEOFENCE_TRANSITION_EXIT)) {
// Post a notification
List<Geofence> geofences = LocationClient
.getTriggeringGeofences(intent);
String[] geofenceIds = new String[geofences.size()];
String ids = TextUtils.join(GeofenceUtils.GEOFENCE_ID_DELIMITER,
geofenceIds);
String transitionType = GeofenceUtils
.getTransitionString(transition);
for (int index = 0; index < geofences.size(); index++) {
Geofence geofence = geofences.get(index);
// ...do something with the geofence entry or exit. I'm saving them to a local sqlite db
}
// Create an Intent to broadcast to the app
broadcastIntent
.setAction(GeofenceUtils.ACTION_GEOFENCE_TRANSITION)
.addCategory(GeofenceUtils.CATEGORY_LOCATION_SERVICES)
.putExtra(GeofenceUtils.EXTRA_GEOFENCE_ID, geofenceIds)
.putExtra(GeofenceUtils.EXTRA_GEOFENCE_TRANSITION_TYPE,
transitionType);
LocalBroadcastManager.getInstance(MyApplication.getContext())
.sendBroadcast(broadcastIntent);
// Log the transition type and a message
Log.d(GeofenceUtils.APPTAG, transitionType + ": " + ids);
Log.d(GeofenceUtils.APPTAG,
context.getString(R.string.geofence_transition_notification_text));
// In debug mode, log the result
Log.d(GeofenceUtils.APPTAG, "transition");
// An invalid transition was reported
} else {
// Always log as an error
Log.e(GeofenceUtils.APPTAG,
context.getString(R.string.geofence_transition_invalid_type,
transition));
}
}
/**
* Posts a notification in the notification bar when a transition is
* detected. If the user clicks the notification, control goes to the main
* Activity.
*
* @param transitionType
* The type of transition that occurred.
*
*/
private void sendNotification(String transitionType, String locationName) {
// Create an explicit content Intent that starts the main Activity
Intent notificationIntent = new Intent(context, MainActivity.class);
// Construct a task stack
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
// Adds the main Activity to the task stack as the parent
stackBuilder.addParentStack(MainActivity.class);
// Push the content Intent onto the stack
stackBuilder.addNextIntent(notificationIntent);
// Get a PendingIntent containing the entire back stack
PendingIntent notificationPendingIntent = stackBuilder
.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
// Get a notification builder that's compatible with platform versions
// >= 4
NotificationCompat.Builder builder = new NotificationCompat.Builder(
context);
// Set the notification contents
builder.setSmallIcon(R.drawable.ic_notification)
.setContentTitle(transitionType + ": " + locationName)
.setContentText(
context.getString(R.string.geofence_transition_notification_text))
.setContentIntent(notificationPendingIntent);
// Get an instance of the Notification manager
NotificationManager mNotificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
// Issue the notification
mNotificationManager.notify(0, builder.build());
}
}
希望这能帮助别人。
关于Android 地理围栏在位置服务被禁用/重新启动时自动删除，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/18781501/