จัดการเหตุการณ์

class EventsDemoActivity : SamplesBaseActivity(), OnMapClickListener,
    OnMapLongClickListener, OnCameraIdleListener, OnCameraMoveListener, 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)
        applyInsets(findViewById(R.id.map_container))
    }

    override fun onMapReady(googleMap: GoogleMap) {
        map = googleMap
        map.setOnMapClickListener(this)
        map.setOnMapLongClickListener(this)
        map.setOnCameraMoveListener(this)
        map.setOnCameraIdleListener(this)
        updateCameraPosition()
    }

    override fun onMapClick(point: LatLng) {
        val lat = String.format(Locale.US, "%.6f", point.latitude)
        val lng = String.format(Locale.US, "%.6f", point.longitude)
        tapTextView.text = getString(R.string.events_tapped_format, lat, lng)
    }

    override fun onMapLongClick(point: LatLng) {
        val lat = String.format(Locale.US, "%.6f", point.latitude)
        val lng = String.format(Locale.US, "%.6f", point.longitude)
        tapTextView.text = getString(R.string.events_long_pressed_format, lat, lng)
    }

    override fun onCameraMove() {
        updateCameraPosition()
    }

    override fun onCameraIdle() {
        updateCameraPosition()
    }

    private fun updateCameraPosition() {
        if (!::map.isInitialized) return
        val pos = map.cameraPosition
        val lat = String.format(Locale.US, "%.6f", pos.target.latitude)
        val lng = String.format(Locale.US, "%.6f", pos.target.longitude)
        val zoom = String.format(Locale.US, "%.1f", pos.zoom)
        val tilt = String.format(Locale.US, "%.1f", pos.tilt)
        val bearing = String.format(Locale.US, "%.1f", pos.bearing)
        cameraTextView.text = getString(R.string.events_camera_position_format, lat, lng, zoom, tilt, bearing)
    }
}
EventsDemoActivity.kt

      

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

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

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

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

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

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

    @Override
    public void onMapClick(LatLng point) {
        String lat = String.format(Locale.US, "%.6f", point.latitude);
        String lng = String.format(Locale.US, "%.6f", point.longitude);
        tapTextView.setText(getString(com.example.common_ui.R.string.events_tapped_format, lat, lng));
    }

    @Override
    public void onMapLongClick(LatLng point) {
        String lat = String.format(Locale.US, "%.6f", point.latitude);
        String lng = String.format(Locale.US, "%.6f", point.longitude);
        tapTextView.setText(getString(com.example.common_ui.R.string.events_long_pressed_format, lat, lng));
    }

    @Override
    public void onCameraMove() {
        updateCameraPosition();
    }

    @Override
    public void onCameraIdle() {
        updateCameraPosition();
    }

    private void updateCameraPosition() {
        if (map == null) return;
        com.google.android.gms.maps.model.CameraPosition pos = map.getCameraPosition();
        String lat = String.format(Locale.US, "%.6f", pos.target.latitude);
        String lng = String.format(Locale.US, "%.6f", pos.target.longitude);
        String zoom = String.format(Locale.US, "%.1f", pos.zoom);
        String tilt = String.format(Locale.US, "%.1f", pos.tilt);
        String bearing = String.format(Locale.US, "%.1f", pos.bearing);
        cameraTextView.setText(getString(
            com.example.common_ui.R.string.events_camera_position_format,
            lat,
            lng,
            zoom,
            tilt,
            bearing
        ));
    }
}
EventsDemoActivity.java