即使我强制执行初始触发器，Geofence 也不会调用广播接收器

Question

I'm trying to build an application with GeoFence. I followed this documentation:

https://developer.android.com/training/location/geofencing

I'm creating a geofence around my coordinates and specifying

builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER | GeofencingRequest.INITIAL_TRIGGER_EXIT);

So, when the geofence is created should trigger an ENTER or an EXIT trigger (actually it should be an ENTER as the coordinates are the ones I'm on it).

I put a toast on the broadcastReceiver and also a breakpoint but it didn't fire.

This is my code:

Manifest:

<manifest [...]

    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <application
        [...]
        <receiver
            android:name=".GeofenceBroadcastReceiver"
            android:enabled="true"
            android:exported="true" />
    </application>

</manifest>

MainActivity:

public class MainActivity extends AppCompatActivity {

    private PendingIntent geofencePendingIntent;
    private GeofencingClient geofencingClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
       
       [Not related stuff and foreground & background location permissions already granted]

        geofencingClient = LocationServices.getGeofencingClient(this);

        geofencingClient.addGeofences(getGeofencingRequest(), getGeofencePendingIntent())
                .addOnSuccessListener(this, new OnSuccessListener<Void>() {
                    @Override
                    public void onSuccess(Void aVoid) {
                        Toast.makeText(MainActivity.this, "SUCCESFULLY CREATED GEOFENCES", Toast.LENGTH_SHORT).show();
                    }
                })
                .addOnFailureListener(this, new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        Toast.makeText(MainActivity.this, "ERROR CREATING GEOFENCES: " + e.getMessage(), Toast.LENGTH_SHORT).show();

                    }
                });
    }



    private PendingIntent getGeofencePendingIntent() {
        // Reuse the PendingIntent if we already have it.
        if (geofencePendingIntent != null) {
            return geofencePendingIntent;
        }
        Intent intent = new Intent(this, GeofenceBroadcastReceiver.class);
        // We use FLAG_UPDATE_CURRENT so that we get the same pending intent back when
        // calling addGeofences() and removeGeofences().
        geofencePendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        return geofencePendingIntent;
    }


    private GeofencingRequest getGeofencingRequest() {
        GeofencingRequest.Builder builder = new GeofencingRequest.Builder();
        builder.setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER | GeofencingRequest.INITIAL_TRIGGER_EXIT);
        builder.addGeofences(Collections.singletonList(new Geofence.Builder()
                // Set the request ID of the geofence. This is a string to identify this
                // geofence.
                .setRequestId("HOME")

                .setCircularRegion(
                        123.456,
                        -123.456,
                        100000
                )
                .setExpirationDuration(Geofence.NEVER_EXPIRE)
                .setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER |
                        Geofence.GEOFENCE_TRANSITION_EXIT)

                .build()));
        return builder.build();
    }

When I start the application I get the "SUCCESFULLY CREATED GEOFENCES" toast, but the intent is never triggered.

If there is a goefence, and I am obviusly inside or outside, I should get an event, i guess, right?

Also, here it is the broadcast receiver:

public class GeofenceBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {

        
        GeofencingEvent geofencingEvent = GeofencingEvent.fromIntent(intent); // There's a breakpoint here
        if (geofencingEvent.hasError()) {
            String errorMessage = GeofenceStatusCodes
                    .getStatusCodeString(geofencingEvent.getErrorCode());
            Toast.makeText(context.getApplicationContext(), "error in broadcast receiver", Toast.LENGTH_SHORT);
            return;
        }

        // Get the transition type.
        int geofenceTransition = geofencingEvent.getGeofenceTransition();

        if (geofenceTransition == Geofence.GEOFENCE_TRANSITION_ENTER ||
            geofenceTransition == Geofence.GEOFENCE_TRANSITION_EXIT) {
       
        Toast.makeText(context.getApplicationContext(), "EVENT FIRED:" + (geofenceTransition == 1 ? "ENTERED" : "EXITED"), Toast.LENGTH_SHORT).show();


        } else {
            Toast.makeText(context.getApplicationContext(), "NOT ENTER NOR EXIT", Toast.LENGTH_SHORT).show();
        }


    }

Answer 1

In my case the expiration duration was 50 seconds. As the trigger could take upto 2-3 minutes , geofence was expiring before event triggered.

Check expiration duration is enough.