How to avoid using Listener on Android

I'm trying to get the last user's position but I'm in a static context.

Here's the code

public void getLastKnownLocation() {
    FusedLocationProviderClient fusedLocationClient = LocationServices.
            getFusedLocationProviderClient(App.getContext());

    fusedLocationClient.getLastLocation()
            .addOnSuccessListener(**activity_needed_here**, new OnSuccessListener<Location>() {
                @Override
                public void onSuccess(Location location) {
                    // Got last known location. In some rare situations this can be null.
                    if (location != null) {
                        System.out.println("Speed is "   location.getSpeed());
                    }
                }
            });

The problem is that I'm in a static context and I cannot have an activity here to call. I can, however, access the app context.

How can I avoid using the addOnSuccessListener or how can I implement this in a static context?

CodePudding user response：

According to the Task JavaDocs, there are three forms of addOnSuccessListener(). You could consider using the one that does not take an Activity as the first parameter.

CodePudding user response：

you can change the code to export this listener, example:

public Task<Location> getLastKnownLocation() {
    FusedLocationProviderClient fusedLocationClient = LocationServices.
            getFusedLocationProviderClient(App.getContext());

    return fusedLocationClient.getLastLocation()

And when you call getLastKnownLocation, should do:

getLastKnownLocation().addOnSuccessListener(....).addOnFailureListener(...)