当您增加半径时，您设置的半径太小 google-play 服务不会发出 1 米的通知，它会为此提供更好的结果，并尝试将其用于地理围栏。
在地理围栏接收器中
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 = getTransitionString(transition);
sendNotification(transitionType, ids);
for (int index = 0; index < geofences.size(); index++) {
Geofence geofence = geofences.get(index);
}
// Create an Intent to broadcast to the app
broadcastIntent
.setAction(GeofenceUtils.ACTION_GEOFENCE_TRANSITION)
.addCategory(GeofenceUtils.CATEGORY_LOCATION_SERVICES);
LocalBroadcastManager.getInstance(sqlitewraper.context)
.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(sqlitewraper.context,
MainActivity.class);
// Construct a task stack
TaskStackBuilder stackBuilder = TaskStackBuilder
.create(sqlitewraper.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(
sqlitewraper.context);
// Set the notification contents
builder.setSmallIcon(R.drawable.ic_notification)
.setContentTitle(transitionType + ": " + locationName)
.setContentText(
sqlitewraper.context
.getString(R.string.geofence_transition_notification_text))
.setContentIntent(notificationPendingIntent);
// Get an instance of the Notification manager
NotificationManager mNotificationManager = (NotificationManager) sqlitewraper.context
.getSystemService(Context.NOTIFICATION_SERVICE);
// Issue the notification
mNotificationManager.notify(0, builder.build());
}
private String getTransitionString(int transitionType) {
switch (transitionType) {
case Geofence.GEOFENCE_TRANSITION_ENTER:
return ("enter geofence");
case Geofence.GEOFENCE_TRANSITION_EXIT:
return ("exit from geofence");
default:
return ("Transisation unknown");
}
}
示例代码 GeofenceRequester 的更改
Intent intent = new Intent("packagename.ACTION_RECEIVE_GEOFENCE");
// Intent intent = new Intent(mActivity, ReceiveTransitionsIntentService.class);
return PendingIntent.getBroadcast(
sqlitewraper.context,
0,
intent,
PendingIntent.FLAG_UPDATE_CURRENT);
}
清单文件中的更改
<receiver android:name="packagename.GeofenceReceiver"
android:exported="false" >
<intent-filter>
<action android:name="packagename.ACTION_RECEIVE_GEOFENCE" />
<category android:name="packagename" />
</intent-filter>
</receiver>