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Using the Maps SDK for Android, you can listen to events on the map.
Code samplesThe ApiDemos repository on GitHub includes samples that demonstrates events and listeners:
Kotlin
Java
If you want to respond to a user tapping on a point on the map, you can use an OnMapClickListener which you can set on the map by calling GoogleMap.setOnMapClickListener(OnMapClickListener). When a user clicks (taps) somewhere on the map, you will receive an onMapClick(LatLng) event that indicates the location on the map that the user clicked. Note that if you need the corresponding location on the screen (in pixels), you can obtain a Projection from the map which allows you to convert between latitude/longitude coordinates and screen pixel coordinates.
You can also listen for long click events with an OnMapLongClickListener which you can set on the map by calling GoogleMap.setOnMapLongClickListener(OnMapLongClickListener). This listener behaves similarly to the click listener and will be notified on long click events with an onMapLongClick(LatLng) callback.
To disable click events on a map in lite mode, call setClickable() on the view that contains the MapView or MapFragment. This is useful, for example, when displaying a map or maps in a list view, where you want the click event to invoke an action unrelated to the map.
The option to disable click events is available in lite mode only. Disabling click events will also make markers non-clickable. It will not affect other controls on the map.
For a MapView:
val mapView = findViewById<MapView>(R.id.mapView)
mapView.isClickable = false
Java
MapView mapView = findViewById(R.id.mapView);
mapView.setClickable(false);
For a MapFragment:
val mapFragment = supportFragmentManager
.findFragmentById(R.id.map) as SupportMapFragment
val view = mapFragment.view
view?.isClickable = false
Java
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
View view = mapFragment.getView();
view.setClickable(false);
Camera change events
The map view is modeled as a camera looking down on a flat plane. You can change the properties of the camera to affect the zoom level, view port and perspective of the map. See the guide to the camera. Users can also affect the camera by making gestures.
Using camera change listeners, you can keep track of camera movements. Your app can receive notifications for camera motion start, ongoing, and end events. You can also see why the camera is moving, whether it's caused by user gestures, built-in API animations or developer-controlled movements.
The following sample illustrates all the available camera event listeners:
Kotlin/*
* Copyright 2018 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.kotlindemos
import android.graphics.Color
import android.os.Bundle
import android.util.Log
import android.view.View
import android.widget.CompoundButton
import android.widget.SeekBar
import android.widget.Toast
import com.example.common_ui.R
import com.google.android.gms.maps.CameraUpdate
import com.google.android.gms.maps.CameraUpdateFactory
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.GoogleMap.CancelableCallback
import com.google.android.gms.maps.GoogleMap.OnCameraIdleListener
import com.google.android.gms.maps.GoogleMap.OnCameraMoveCanceledListener
import com.google.android.gms.maps.GoogleMap.OnCameraMoveListener
import com.google.android.gms.maps.GoogleMap.OnCameraMoveStartedListener
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import com.google.android.gms.maps.model.CameraPosition
import com.google.android.gms.maps.model.LatLng
import com.google.android.gms.maps.model.PolylineOptions
/**
* This shows how to change the camera position for the map.
*/
class CameraDemoActivity :
SamplesBaseActivity(),
OnCameraMoveStartedListener,
OnCameraMoveListener,
OnCameraMoveCanceledListener,
OnCameraIdleListener,
OnMapReadyCallback {
/**
* The amount by which to scroll the camera. Note that this amount is in raw pixels, not dp
* (density-independent pixels).
*/
private val SCROLL_BY_PX = 100
private val TAG = CameraDemoActivity::class.java.name
private val sydneyLatLng = LatLng(-33.87365, 151.20689)
private val bondiLocation: CameraPosition = CameraPosition.Builder()
.target(LatLng(-33.891614, 151.276417))
.zoom(15.5f)
.bearing(300f)
.tilt(50f)
.build()
private val sydneyLocation: CameraPosition = CameraPosition.Builder().
target(LatLng(-33.87365, 151.20689))
.zoom(15.5f)
.bearing(0f)
.tilt(25f)
.build()
private lateinit var map: GoogleMap
private lateinit var animateToggle: CompoundButton
private lateinit var customDurationToggle: CompoundButton
private lateinit var customDurationBar: SeekBar
private var currPolylineOptions: PolylineOptions? = null
private var isCanceled = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.camera_demo)
animateToggle = findViewById(R.id.animate)
customDurationToggle = findViewById(R.id.duration_toggle)
customDurationBar = findViewById(R.id.duration_bar)
updateEnabledState()
val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment
mapFragment.getMapAsync(this)
applyInsets(findViewById<View?>(R.id.map_container))
}
override fun onResume() {
super.onResume()
updateEnabledState()
}
override fun onMapReady(googleMap: GoogleMap) {
map = googleMap
// return early if the map was not initialised properly
with(googleMap) {
setOnCameraIdleListener(this@CameraDemoActivity)
setOnCameraMoveStartedListener(this@CameraDemoActivity)
setOnCameraMoveListener(this@CameraDemoActivity)
setOnCameraMoveCanceledListener(this@CameraDemoActivity)
// We will provide our own zoom controls.
uiSettings.isZoomControlsEnabled = false
uiSettings.isMyLocationButtonEnabled = true
// Show Sydney
moveCamera(CameraUpdateFactory.newLatLngZoom(sydneyLatLng, 10f))
}
}
/**
* When the map is not ready the CameraUpdateFactory cannot be used. This should be used to wrap
* all entry points that call methods on the Google Maps API.
*
* @param stuffToDo the code to be executed if the map is initialised
*/
private fun checkReadyThen(stuffToDo: () -> Unit) {
if (!::map.isInitialized) {
Toast.makeText(this, R.string.map_not_ready, Toast.LENGTH_SHORT).show()
} else {
stuffToDo()
}
}
/**
* Called when the Go To Bondi button is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onGoToBondi(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.newCameraPosition(bondiLocation))
}
}
/**
* Called when the Animate To Sydney button is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onGoToSydney(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.newCameraPosition(sydneyLocation),
object : CancelableCallback {
override fun onFinish() {
Toast.makeText(baseContext, "Animation to Sydney complete",
Toast.LENGTH_SHORT).show()
}
override fun onCancel() {
Toast.makeText(baseContext, "Animation to Sydney canceled",
Toast.LENGTH_SHORT).show()
}
})
}
}
/**
* Called when the stop button is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onStopAnimation(view: View) = checkReadyThen { map.stopAnimation() }
/**
* Called when the zoom in button (the one with the +) is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onZoomIn(view: View) = checkReadyThen { changeCamera(CameraUpdateFactory.zoomIn()) }
/**
* Called when the zoom out button (the one with the -) is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onZoomOut(view: View) = checkReadyThen { changeCamera(CameraUpdateFactory.zoomOut()) }
/**
* Called when the tilt more button (the one with the /) is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onTiltMore(view: View) {
checkReadyThen {
val newTilt = Math.min(map.cameraPosition.tilt + 10, 90F)
val cameraPosition = CameraPosition.Builder(map.cameraPosition).tilt(newTilt).build()
changeCamera(CameraUpdateFactory.newCameraPosition(cameraPosition))
}
}
/**
* Called when the tilt less button (the one with the \) is clicked.
*/
@Suppress("UNUSED_PARAMETER")
fun onTiltLess(view: View) {
checkReadyThen {
val newTilt = Math.max(map.cameraPosition.tilt - 10, 0F)
val cameraPosition = CameraPosition.Builder(map.cameraPosition).tilt(newTilt).build()
changeCamera(CameraUpdateFactory.newCameraPosition(cameraPosition))
}
}
/**
* Called when the left arrow button is clicked. This causes the camera to move to the left
*/
@Suppress("UNUSED_PARAMETER")
fun onScrollLeft(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.scrollBy((-SCROLL_BY_PX).toFloat(),0f))
}
}
/**
* Called when the right arrow button is clicked. This causes the camera to move to the right.
*/
@Suppress("UNUSED_PARAMETER")
fun onScrollRight(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.scrollBy(SCROLL_BY_PX.toFloat(), 0f))
}
}
/**
* Called when the up arrow button is clicked. The causes the camera to move up.
*/
@Suppress("UNUSED_PARAMETER")
fun onScrollUp(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.scrollBy(0f, (-SCROLL_BY_PX).toFloat()))
}
}
/**
* Called when the down arrow button is clicked. This causes the camera to move down.
*/
@Suppress("UNUSED_PARAMETER")
fun onScrollDown(view: View) {
checkReadyThen {
changeCamera(CameraUpdateFactory.scrollBy(0f, SCROLL_BY_PX.toFloat()))
}
}
/**
* Called when the animate button is toggled
*/
@Suppress("UNUSED_PARAMETER")
fun onToggleAnimate(view: View) = updateEnabledState()
/**
* Called when the custom duration checkbox is toggled
*/
@Suppress("UNUSED_PARAMETER")
fun onToggleCustomDuration(view: View) = updateEnabledState()
/**
* Update the enabled state of the custom duration controls.
*/
private fun updateEnabledState() {
customDurationToggle.isEnabled = animateToggle.isChecked
customDurationBar.isEnabled = animateToggle.isChecked && customDurationToggle.isChecked
}
/**
* Change the camera position by moving or animating the camera depending on the state of the
* animate toggle button.
*/
private fun changeCamera(update: CameraUpdate, callback: CancelableCallback? = null) {
if (animateToggle.isChecked) {
if (customDurationToggle.isChecked) {
// The duration must be strictly positive so we make it at least 1.
map.animateCamera(update, Math.max(customDurationBar.progress, 1), callback)
} else {
map.animateCamera(update, callback)
}
} else {
map.moveCamera(update)
}
}
override fun onCameraMoveStarted(reason: Int) {
if (!isCanceled) map.clear()
var reasonText = "UNKNOWN_REASON"
currPolylineOptions = PolylineOptions().width(5f)
when (reason) {
OnCameraMoveStartedListener.REASON_GESTURE -> {
currPolylineOptions?.color(Color.BLUE)
reasonText = "GESTURE"
}
OnCameraMoveStartedListener.REASON_API_ANIMATION -> {
currPolylineOptions?.color(Color.RED)
reasonText = "API_ANIMATION"
}
OnCameraMoveStartedListener.REASON_DEVELOPER_ANIMATION -> {
currPolylineOptions?.color(Color.GREEN)
reasonText = "DEVELOPER_ANIMATION"
}
}
Log.d(TAG, "onCameraMoveStarted($reasonText)")
addCameraTargetToPath()
}
/**
* Ensures that currPolyLine options is not null before accessing it
*
* @param stuffToDo the code to be executed if currPolylineOptions is not null
*/
private fun checkPolylineThen(stuffToDo: () -> Unit) {
if (currPolylineOptions != null) stuffToDo()
}
override fun onCameraMove() {
Log.d(TAG, "onCameraMove")
// When the camera is moving, add its target to the current path we'll draw on the map.
checkPolylineThen { addCameraTargetToPath() }
}
override fun onCameraMoveCanceled() {
// When the camera stops moving, add its target to the current path, and draw it on the map.
checkPolylineThen {
addCameraTargetToPath()
map.addPolyline(currPolylineOptions!!)
}
isCanceled = true // Set to clear the map when dragging starts again.
currPolylineOptions = null
Log.d(TAG, "onCameraMoveCancelled")
}
override fun onCameraIdle() {
checkPolylineThen {
addCameraTargetToPath()
map.addPolyline(currPolylineOptions!!)
}
currPolylineOptions = null
isCanceled = false // Set to *not* clear the map when dragging starts again.
Log.d(TAG, "onCameraIdle")
}
private fun addCameraTargetToPath() {
currPolylineOptions?.add(map.cameraPosition.target)
}
} Java
// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.example.mapdemo;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.SeekBar;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.CancelableCallback;
import com.google.android.gms.maps.GoogleMap.OnCameraIdleListener;
import com.google.android.gms.maps.GoogleMap.OnCameraMoveCanceledListener;
import com.google.android.gms.maps.GoogleMap.OnCameraMoveListener;
import com.google.android.gms.maps.GoogleMap.OnCameraMoveStartedListener;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.PolylineOptions;
/**
* This shows how to change the camera position for the map.
*/
public class CameraDemoActivity extends SamplesBaseActivity implements
OnCameraMoveStartedListener,
OnCameraMoveListener,
OnCameraMoveCanceledListener,
OnCameraIdleListener,
OnMapReadyCallback {
private static final String TAG = CameraDemoActivity.class.getName();
/**
* The amount by which to scroll the camera. Note that this amount is in raw pixels, not dp
* (density-independent pixels).
*/
private static final int SCROLL_BY_PX = 100;
public static final CameraPosition BONDI =
new CameraPosition.Builder().target(new LatLng(-33.891614, 151.276417))
.zoom(15.5f)
.bearing(300)
.tilt(50)
.build();
public static final CameraPosition SYDNEY =
new CameraPosition.Builder().target(new LatLng(-33.87365, 151.20689))
.zoom(15.5f)
.bearing(0)
.tilt(25)
.build();
private GoogleMap map;
private CompoundButton animateToggle;
private CompoundButton customDurationToggle;
private SeekBar customDurationBar;
private PolylineOptions currPolylineOptions;
private boolean isCanceled = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(com.example.common_ui.R.layout.camera_demo);
animateToggle = findViewById(com.example.common_ui.R.id.animate);
customDurationToggle = findViewById(com.example.common_ui.R.id.duration_toggle);
customDurationBar = findViewById(com.example.common_ui.R.id.duration_bar);
updateEnabledState();
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
protected void onResume() {
super.onResume();
updateEnabledState();
}
@Override
public void onMapReady(GoogleMap googleMap) {
map = googleMap;
map.setOnCameraIdleListener(this);
map.setOnCameraMoveStartedListener(this);
map.setOnCameraMoveListener(this);
map.setOnCameraMoveCanceledListener(this);
// We will provide our own zoom controls.
map.getUiSettings().setZoomControlsEnabled(false);
map.getUiSettings().setMyLocationButtonEnabled(true);
// Show Sydney
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(-33.87365, 151.20689), 10));
}
/**
* When the map is not ready the CameraUpdateFactory cannot be used. This should be called on
* all entry points that call methods on the Google Maps API.
*/
private boolean checkReady() {
if (map == null) {
Toast.makeText(this, com.example.common_ui.R.string.map_not_ready, Toast.LENGTH_SHORT).show();
return false;
}
return true;
}
/**
* Called when the Go To Bondi button is clicked.
*/
public void onGoToBondi(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.newCameraPosition(BONDI));
}
/**
* Called when the Animate To Sydney button is clicked.
*/
public void onGoToSydney(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.newCameraPosition(SYDNEY), new CancelableCallback() {
@Override
public void onFinish() {
Toast.makeText(getBaseContext(), "Animation to Sydney complete", Toast.LENGTH_SHORT)
.show();
}
@Override
public void onCancel() {
Toast.makeText(getBaseContext(), "Animation to Sydney canceled", Toast.LENGTH_SHORT)
.show();
}
});
}
/**
* Called when the stop button is clicked.
*/
public void onStopAnimation(View view) {
if (!checkReady()) {
return;
}
map.stopAnimation();
}
/**
* Called when the zoom in button (the one with the +) is clicked.
*/
public void onZoomIn(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.zoomIn());
}
/**
* Called when the zoom out button (the one with the -) is clicked.
*/
public void onZoomOut(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.zoomOut());
}
/**
* Called when the tilt more button (the one with the /) is clicked.
*/
public void onTiltMore(View view) {
if (!checkReady()) {
return;
}
CameraPosition currentCameraPosition = map.getCameraPosition();
float currentTilt = currentCameraPosition.tilt;
float newTilt = currentTilt + 10;
newTilt = (newTilt > 90) ? 90 : newTilt;
CameraPosition cameraPosition = new CameraPosition.Builder(currentCameraPosition)
.tilt(newTilt).build();
changeCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}
/**
* Called when the tilt less button (the one with the \) is clicked.
*/
public void onTiltLess(View view) {
if (!checkReady()) {
return;
}
CameraPosition currentCameraPosition = map.getCameraPosition();
float currentTilt = currentCameraPosition.tilt;
float newTilt = currentTilt - 10;
newTilt = (newTilt > 0) ? newTilt : 0;
CameraPosition cameraPosition = new CameraPosition.Builder(currentCameraPosition)
.tilt(newTilt).build();
changeCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
}
/**
* Called when the left arrow button is clicked. This causes the camera to move to the left
*/
public void onScrollLeft(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.scrollBy(-SCROLL_BY_PX, 0));
}
/**
* Called when the right arrow button is clicked. This causes the camera to move to the right.
*/
public void onScrollRight(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.scrollBy(SCROLL_BY_PX, 0));
}
/**
* Called when the up arrow button is clicked. The causes the camera to move up.
*/
public void onScrollUp(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.scrollBy(0, -SCROLL_BY_PX));
}
/**
* Called when the down arrow button is clicked. This causes the camera to move down.
*/
public void onScrollDown(View view) {
if (!checkReady()) {
return;
}
changeCamera(CameraUpdateFactory.scrollBy(0, SCROLL_BY_PX));
}
/**
* Called when the animate button is toggled
*/
public void onToggleAnimate(View view) {
updateEnabledState();
}
/**
* Called when the custom duration checkbox is toggled
*/
public void onToggleCustomDuration(View view) {
updateEnabledState();
}
/**
* Update the enabled state of the custom duration controls.
*/
private void updateEnabledState() {
customDurationToggle.setEnabled(animateToggle.isChecked());
customDurationBar
.setEnabled(animateToggle.isChecked() && customDurationToggle.isChecked());
}
private void changeCamera(CameraUpdate update) {
changeCamera(update, null);
}
/**
* Change the camera position by moving or animating the camera depending on the state of the
* animate toggle button.
*/
private void changeCamera(CameraUpdate update, CancelableCallback callback) {
if (animateToggle.isChecked()) {
if (customDurationToggle.isChecked()) {
int duration = customDurationBar.getProgress();
// The duration must be strictly positive so we make it at least 1.
map.animateCamera(update, Math.max(duration, 1), callback);
} else {
map.animateCamera(update, callback);
}
} else {
map.moveCamera(update);
}
}
@Override
public void onCameraMoveStarted(int reason) {
if (!isCanceled) {
map.clear();
}
String reasonText = "UNKNOWN_REASON";
currPolylineOptions = new PolylineOptions().width(5);
switch (reason) {
case OnCameraMoveStartedListener.REASON_GESTURE:
currPolylineOptions.color(Color.BLUE);
reasonText = "GESTURE";
break;
case OnCameraMoveStartedListener.REASON_API_ANIMATION:
currPolylineOptions.color(Color.RED);
reasonText = "API_ANIMATION";
break;
case OnCameraMoveStartedListener.REASON_DEVELOPER_ANIMATION:
currPolylineOptions.color(Color.GREEN);
reasonText = "DEVELOPER_ANIMATION";
break;
}
Log.d(TAG, "onCameraMoveStarted(" + reasonText + ")");
addCameraTargetToPath();
}
@Override
public void onCameraMove() {
// When the camera is moving, add its target to the current path we'll draw on the map.
if (currPolylineOptions != null) {
addCameraTargetToPath();
}
Log.d(TAG, "onCameraMove");
}
@Override
public void onCameraMoveCanceled() {
// When the camera stops moving, add its target to the current path, and draw it on the map.
if (currPolylineOptions != null) {
addCameraTargetToPath();
map.addPolyline(currPolylineOptions);
}
isCanceled = true; // Set to clear the map when dragging starts again.
currPolylineOptions = null;
Log.d(TAG, "onCameraMoveCancelled");
}
@Override
public void onCameraIdle() {
if (currPolylineOptions != null) {
addCameraTargetToPath();
map.addPolyline(currPolylineOptions);
}
currPolylineOptions = null;
isCanceled = false; // Set to *not* clear the map when dragging starts again.
Log.d(TAG, "onCameraIdle");
}
private void addCameraTargetToPath() {
LatLng target = map.getCameraPosition().target;
currPolylineOptions.add(target);
}
}
The following camera listeners are available:
The onCameraMoveStarted() callback of the OnCameraMoveStartedListener is invoked when the camera starts moving. The callback method receives a reason for the camera motion. The reason can be one of the following:
REASON_GESTURE indicates that the camera moved in response to a user's gesture on the map, such as panning, tilting, pinching to zoom, or rotating the map.REASON_API_ANIMATION indicates that the API has moved the camera in response to a non-gesture user action, such as tapping the zoom button, tapping the My Location button, or clicking a marker.REASON_DEVELOPER_ANIMATION indicates that your app has initiated the camera movement.The onCameraMove() callback of the OnCameraMoveListener is invoked multiple times while the camera is moving or the user is interacting with the touch screen. As a guide to how often the callback is invoked, it's useful to know that the API invokes the callback once per frame. Note, however, that this callback is invoked asynchronously and is therefore out of synch with what is visible on the screen. Also note that it's possible for the camera position to remain unchanged between one onCameraMove() callback and the next.
The OnCameraIdle() callback of the OnCameraIdleListener is invoked when the camera stops moving and the user has stopped interacting with the map.
The OnCameraMoveCanceled() callback of the OnCameraMoveCanceledListener is invoked when the current camera movement has been interrupted. Immediately after the OnCameraMoveCanceled() callback, the onCameraMoveStarted() callback is invoked with the new reason.
If your app explicitly calls GoogleMap.stopAnimation(), the OnCameraMoveCanceled() callback is invoked, but the onCameraMoveStarted() callback is not invoked.
To set a listener on the map, call the relevant set-listener method. For example, to request a callback from the OnCameraMoveStartedListener, call GoogleMap.setOnCameraMoveStartedListener().
You can get the camera's target (latitude/longitude), zoom, bearing and tilt from the CameraPosition. See the guide to camera position for details about these properties.
OnCameraChangeListener is deprecated in favour of the listeners described above - that is, OnCameraMoveStartedListener, OnCameraMoveListener, OnCameraMoveCanceledListener and OnCameraIdleListener. Events on businesses and other points of interest
By default, points of interest (POIs) appear on the base map along with their corresponding icons. POIs include parks, schools, government buildings, and more, as well as business POIs such as shops, restaurants, and hotels.
You can respond to click events on a POI. See the guide to businesses and other points of interest.
Indoor map eventsYou can use events to find and customize the active level of an indoor map. Use the OnIndoorStateChangeListener interface to set a listener to be called when either a new building is focused or a new level is activated in a building.
Get the building that is currently in focus by calling GoogleMap.getFocusedBuilding(). Centering the map on a specific lat/long will generally give you the building at that lat/long, but this is not guaranteed.
You can then find the currently active level by calling IndoorBuilding.getActiveLevelIndex().
map.focusedBuilding?.let { building: IndoorBuilding ->
val activeLevelIndex = building.activeLevelIndex
val activeLevel = building.levels[activeLevelIndex]
}
Java
IndoorBuilding building = map.getFocusedBuilding();
if (building != null) {
int activeLevelIndex = building.getActiveLevelIndex();
IndoorLevel activeLevel = building.getLevels().get(activeLevelIndex);
}
This is useful if you want to show custom markup for the active level, such as markers, ground overlays, tile overlays, polygons, polylines, and other shapes.
Hint: To go back to street level, get the default level via IndoorBuilding.getDefaultLevelIndex(), and set it as the active level via IndoorLevel.activate().
You can listen and respond to marker events, including marker click and drag events, by setting the corresponding listener on the GoogleMap object to which the marker belongs. See the guide to marker events.
You can also listen to events on info windows.
Shape and overlay eventsYou can listen and respond to click events on polylines, polygons, circles, and ground overlays.
Note: If multiple overlays or shapes (markers, polylines, polygons, circles and/or ground overlays) are overlaid on top of each other, the click event is cycled through the cluster of markers first, then triggered for other clickable overlays or shapes based on their z-index values. At most one event is triggered per click. In other words, the click is not passed down to the overlays or shapes with lower z-index values. Read more about marker z-index and click events. Location eventsYour app can respond to the following events related to the My Location layer:
onMyLocationButtonClick() callback from the GoogleMap.OnMyLocationButtonClickListener.onMyLocationClick() callback from the GoogleMap.OnMyLocationClickListener.For details, see the guide to the My Location layer.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["The Maps SDK for Android allows developers to respond to map interactions like clicks, camera movements, and indoor map state changes using events and listeners."],["Camera movements can be programmatically controlled and tracked, with listeners providing information about the start, progress, and end of movements."],["Points of Interest, markers, info windows, shapes, overlays, and the My Location feature all offer event handling capabilities for customized interactions."],["Developers can handle click events on various map elements, with prioritization given to markers within clusters and then other clickable overlays based on their z-index."],["Indoor maps provide events for detecting changes in focused buildings and active levels, allowing for tailored content and interactions within indoor environments."]]],[]]
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