จัดการเหตุการณ์

class EventsDemoActivity : AppCompatActivity(), OnMapClickListener,
    OnMapLongClickListener, OnCameraIdleListener, OnMapReadyCallback {

    private lateinit var tapTextView: TextView
    private lateinit var cameraTextView: TextView
    private lateinit var map: GoogleMap

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.events_demo)
        tapTextView = findViewById(R.id.tap_text)
        cameraTextView = findViewById(R.id.camera_text)
        val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment?
        mapFragment?.getMapAsync(this)
    }

    override fun onMapReady(googleMap: GoogleMap) {
        // return early if the map was not initialised properly
        map = googleMap
        map.setOnMapClickListener(this)
        map.setOnMapLongClickListener(this)
        map.setOnCameraIdleListener(this)
    }

    override fun onMapClick(point: LatLng) {
        tapTextView.text = "tapped, point=$point"
    }

    override fun onMapLongClick(point: LatLng) {
        tapTextView.text = "long pressed, point=$point"
    }

    override fun onCameraIdle() {
        if (!::map.isInitialized) return
        cameraTextView.text = map.cameraPosition.toString()
    }
}
EventsDemoActivity.kt

      

public class EventsDemoActivity extends SamplesBaseActivity
        implements OnMapClickListener, OnMapLongClickListener, OnCameraIdleListener,
        OnMapReadyCallback {

    private TextView tapTextView;
    private TextView cameraTextView;
    private GoogleMap map;

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

        tapTextView = findViewById(R.id.tap_text);
        cameraTextView = findViewById(R.id.camera_text);

        SupportMapFragment mapFragment =
                (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        applyInsets(findViewById(R.id.map_container));
    }

    @Override
    public void onMapReady(GoogleMap map) {
        this.map = map;
        this.map.setOnMapClickListener(this);
        this.map.setOnMapLongClickListener(this);
        this.map.setOnCameraIdleListener(this);
    }

    @Override
    public void onMapClick(LatLng point) {
        tapTextView.setText("tapped, point=" + point);
    }

    @Override
    public void onMapLongClick(LatLng point) {
        tapTextView.setText("long pressed, point=" + point);
    }

    @Override
    public void onCameraIdle() {
        cameraTextView.setText(map.getCameraPosition().toString());
    }
}
EventsDemoActivity.java