我已经在应用程序中实现了一些地理围栏，并且已经在我的测试设备（运行Android 5.0.1的Samsung S4）上使用模拟位置测试它们。在使用模拟位置时，转换检测一直在100％的时间内工作。我现在转移到其他Android设备上并将应用程序放在一些经常（物理上）进入和离开地理围栏位置的手机上，我注意到检测到OFTEN不起作用。这真的很不方便，所以我希望有一些方法可以使检测更加一致。
我的代码调用了地理围栏：
private void startGeofenceMonitoring() {
Log.d(TAG, "startGeofenceMonitoring called");
try {
Geofence geofence = new Geofence.Builder()
.setRequestId(GEOFENCE_ID)
.setCircularRegion(51.364516, -0.189643, 150)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
.setNotificationResponsiveness(1000)
.setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER | Geofence.GEOFENCE_TRANSITION_EXIT)
.build();
GeofencingRequest geofencingRequest = new GeofencingRequest.Builder()
.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER | GeofencingRequest.INITIAL_TRIGGER_EXIT)
.addGeofence(geofence)
.build();
Intent intent = new Intent(this, GeofenceService.class);
PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
if (!googleApiClient.isConnected()) {
Log.d(TAG, "GoogleApiClient is not connected");
} else {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MapsActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, LOCATION);
return;
}
LocationServices.GeofencingApi.addGeofences(googleApiClient, geofencingRequest, pendingIntent)
.setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
if (status.isSuccess()) {
Log.d(TAG, "Successfully added Geofence");
} else {
Log.d(TAG, "Failed to add geofence - " + status.getStatus());
}
}
});
}
} catch (SecurityException e) {
Log.d(TAG, "SecurityException - " + e.getMessage());
}
}
GeofenceService.java：
public class GeofenceService extends IntentService {
public static final String TAG = "GeofenceService";
DatabaseReference mRootRef = FirebaseDatabase.getInstance().getReference();
public GeofenceService() {
super(TAG);
}
@Override
protected void onHandleIntent(Intent intent) {
GeofencingEvent event = GeofencingEvent.fromIntent(intent);
if (event.hasError()) {
//TODO:
} else {
double longitude = 0;
double latitude = 0;
int transition = event.getGeofenceTransition();
List<Geofence> geofences = event.getTriggeringGeofences();
Geofence geofence = geofences.get(0);
String requestID = geofence.getRequestId();
longitude = event.getTriggeringLocation().getLongitude();
latitude = event.getTriggeringLocation().getLatitude();
final FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (longitude != 0 && latitude != 0) {
if (transition == Geofence.GEOFENCE_TRANSITION_ENTER) {
Log.d(TAG, "Entering geofence - " + requestID);
//My on enter code
} else if (transition == Geofence.GEOFENCE_TRANSITION_EXIT) {
Log.d(TAG, "Exited geofence - " + requestID);
//My on exit code
}
} else {
mRootRef.child("users/" + user.getUid() + "/error").setValue("lat/long = 0");
}
}
}
我在网上看到，使用广播接收器的效果比我所做的要好但令人尴尬的是，我还不够好，不能真正理解如何将我所做的转换为什么其他人建议。
感谢。