How to pass data from class to activity on android?

Question

Google

It was necessary to get the current geolocation, for this I created a class. How can I get the location from another activity on the click of a button?
Thanks in advance for your reply!

public class GoogleApiLocation extends AppCompatActivity implements
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
    protected static final String TAG = "mGoogleApiClient";
    protected GoogleApiClient mGoogleApiClient;
    protected Location mLastLocation;

    protected TextView mLatitudeText;
    protected TextView mLongitudeText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mLatitudeText = (TextView) findViewById((R.id.latitudeValueGPS));
        mLongitudeText = (TextView) findViewById((R.id.longitudeValueGPS));

        buildGoogleApiClient();
    }

    protected synchronized void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

    @Override
    protected void onStart() {
        super.onStart();
        mGoogleApiClient.connect();
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
    }

    @Override
    public void onConnected(Bundle connectionHint) {
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED &&
                ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
            mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
            if (mLastLocation != null) {
                Log.d("LOCATION: ", mLastLocation.getLatitude() + " : " + mLastLocation.getLongitude());
            } else {
                Toast.makeText(this, "no_location_detected", Toast.LENGTH_LONG).show();
            }
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, 1);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == 1) {
            if (permissions.length == 1 &&
                    permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
                    grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            } else {

            }
        }
    }

    @Override
    public void onConnectionFailed(ConnectionResult result) {
        Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
    }

    @Override
    public void onConnectionSuspended(int cause) {
        Log.i(TAG, "Connection suspended");
        mGoogleApiClient.connect();
    }
}