glap

    @Override
    protected void onStart() {
        super.onStart();
        PreferenceManager.getDefaultSharedPreferences(this)
                .registerOnSharedPreferenceChangeListener(this);

        mRequestLocationUpdatesButton = (Button) findViewById(R.id.request_location_updates_button);
        mRemoveLocationUpdatesButton = (Button) findViewById(R.id.remove_location_updates_button);

        mRequestLocationUpdatesButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (!checkPermissions()) {
                    requestPermissions();
                } else {
                    mService.requestLocationUpdates();
                }
            }
        });

        mRemoveLocationUpdatesButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mService.removeLocationUpdates();
            }
        });

        // Restore the state of the buttons when the activity (re)launches.
        setButtonsState(Utils.requestingLocationUpdates(this));

        // Bind to the service. If the service is in foreground mode, this signals to the service
        // that since this activity is in the foreground, the service can exit foreground mode.
        bindService(new Intent(this, LocationUpdatesService.class), mServiceConnection,
                Context.BIND_AUTO_CREATE);
    }