小编Kel*_*ner的帖子

我想尽快展示的小吃店为用户打开谷歌地图的活动,但问题是,有在活动中没有意见,该活动的第一个参数使用(在findViewById()中Snackbar.make()).我放在那里？这是java类代码:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);

    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
}

@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;
    mMap.setBuildingsEnabled(true);
    mMap.getUiSettings().setZoomControlsEnabled(true);
    float cameraZoom = 17;
    LatLng location = new LatLng(43.404032, -80.478184);
    mMap.addMarker(new MarkerOptions().position(location).title("49 McIntyre Place #18, Kitchener, ON N2R 1G3"));
    CameraUpdateFactory.newLatLngZoom(location, cameraZoom);
    Snackbar.make(findViewById(/*WHAT …