Berechtigung-Abfragen-GPS_besser.java

 
 // Methode wird Aufgerufen am Ende von onResume()
 private void berechtigung_pruefen_und_registrieren() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // Permission is not granted
            // here to request the missing permissions, and then overriding
            // public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults)

            // request authorization dialog (Asynchronous!!!)
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.ACCESS_COARSE_LOCATION,
                            Manifest.permission.ACCESS_FINE_LOCATION,
                            Manifest.permission.INTERNET}
                    , 1);
            return;
        }
        registrieren_LocationManager();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case 1: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    // permission was granted, yay! Do the
                    registrieren_LocationManager();

                } else {
                    // permission denied, boo! Disable the
                    // functionality that depends on this permission.
                }
                return;
            }
            // other 'case' lines to check for other
            // permissions this app might request.
        }
    }

    public void registrieren_LocationManager() {
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
    }