johnnylambada-location

This library makes it simple to track your current location using Google's FusedLocationProviderClient. It's based on the Google Training WalkMyAndroid-Solution repository.

Using this library

The following steps enable you to use this library.

Set up jitpack.io for your project

Refer to jitpack's documentation for instructions.

Add the library to your project

Add the following lines to your app/build.gradle dependencies:

// https://github.com/johnnylambada/johnnylambada-location
implementation "com.github.johnnylambada:johnnylambada-location:0.0.2"

Set up the service using the LocationProvider

    private LocationProvider locationProvider;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
        locationProvider = new LocationProvider.Builder(this)
//                .lifecycleOwner(this)   // not necessary for activity when activity==lifecycleowner
//                .locationPermission(Manifest.permission.ACCESS_FINE_LOCATION) // default FINE
//                .accuracy(LocationRequest.PRIORITY_HIGH_ACCURACY) // default HIGH_ACCURACY
//                .intervalMs(1000)   // 1 second
                .locationObserver(location -> {
                    final String prev = binding.answer.getText().toString();
                    final String updated = prev+"\n"+"(" + location.getLatitude() + ", " + location.getLongitude() + ")";
                    binding.answer.setText(updated);
                })
                .onPermissionDeniedFirstTime(() -> {
                    Snackbar.make(
                            findViewById(android.R.id.content),
                            "Denied: This app needs location permission.",
                            Snackbar.LENGTH_LONG)
                            .setAction("OK", __ -> {})
                            .show();
                })
                .onPermissionDeniedAgain(()->{
                    Snackbar.make(
                            findViewById(android.R.id.content),
                            "Rationale: This app can't show location without permission.",
                            Snackbar.LENGTH_LONG)
                            .setAction("OK", __ -> {})
                            .show();

                })
                .onPermissionDeniedForever(()->{
                    Snackbar.make(
                            findViewById(android.R.id.content),
                            "Settings: This app can't show location without permission. Please update settings.",
                            Snackbar.LENGTH_INDEFINITE)
                            .setAction("Settings", __ -> locationProvider.startAppSettings(BuildConfig.APPLICATION_ID))
                            .show();

                })
                .build();

        binding.button.setOnClickListener(__->{
            if (locationProvider.isTrackingLocation()){
                locationProvider.stopTrackingLocation();
            } else {
                locationProvider.startTrackingLocation();
            }
        });
    }

Add a call to LocationProvider.onRequestPermissionsResult in your Activity's onRequestPermissionsResult

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        locationProvider.onRequestPermissionsResult(requestCode,permissions,grantResults);
    }

Review the sample app to see how to integrate the library.

Review the MainActivity, it shows you how to use the LocationProvider from your activity.