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<Marker /> Component API

Props

Prop Type Default Note
title String The title of the marker. This is only used if the component has no children that are a <Callout />, in which case the default callout behavior will be used, which will show both the title and the description, if provided.
description String The description of the marker. This is only used if the component has no children that are a <Callout />, in which case the default callout behavior will be used, which will show both the title and the description, if provided.
image ImageSource* A custom image to be used as the marker's icon. Only local image resources are allowed to be used.
icon ImageSource* Marker icon to render (equivalent to icon property of GMSMarker Class). Note: Google maps only!
pinColor Color If no custom marker view or custom image is provided, the platform default pin will be used, which can be customized by this color. Ignored if a custom marker is being used.

For Android, the set of available colors is limited. Unsupported colors will fall back to red. See #887 for more information.
coordinate LatLng The coordinate for the marker.
centerOffset Point (0, 0) The offset (in points) at which to display the view.

By default, the center point of an annotation view is placed at the coordinate point of the associated annotation. You can use this property to reposition the annotation view as needed. This x and y offset values are measured in points. Positive offset values move the annotation view down and to the right, while negative values move it up and to the left.

For Google Maps, see the anchor prop.
calloutOffset Point (0, 0) The offset (in points) at which to place the callout bubble.

This property determines the additional distance by which to move the callout bubble. When this property is set to (0, 0), the anchor point of the callout bubble is placed on the top-center point of the marker view’s frame. Specifying positive offset values moves the callout bubble down and to the right, while specifying negative values moves it up and to the left.

For Google Maps, see the calloutAnchor prop.
anchor Point (0.5, 1) Sets the anchor point for the marker.

The anchor specifies the point in the icon image that is anchored to the marker's position on the Earth's surface.

The anchor point is specified in the continuous space [0.0, 1.0] x [0.0, 1.0], where (0, 0) is the top-left corner of the image, and (1, 1) is the bottom-right corner. The anchoring point in a W x H image is the nearest discrete grid point in a (W + 1) x (H + 1) grid, obtained by scaling the then rounding. For example, in a 4 x 2 image, the anchor point (0.7, 0.6) resolves to the grid point at (3, 1).

For MapKit on iOS, see the centerOffset prop.
calloutAnchor Point (0.5, 0) Specifies the point in the marker image at which to anchor the callout when it is displayed. This is specified in the same coordinate system as the anchor. See the anchor prop for more details.

The default is the top middle of the image.

For MapKit on iOS, see the calloutOffset prop.
flat Boolean false Sets whether this marker should be flat against the map true or a billboard facing the camera.
identifier String An identifier used to reference this marker at a later date.
rotation Float 0 A float number indicating marker's rotation angle, in degrees.
draggable <null> This is a non-value based prop. Adding this allows the marker to be draggable (re-positioned).
tracksViewChanges Boolean true Sets whether this marker should track view changes. It's recommended to turn it off whenever it's possible to improve custom marker performance.
tracksInfoWindowChanges Boolean false Sets whether this marker should track view changes in info window. Enabling it will let marker change content of info window after first render pass, but will lead to decreased performance, so it's recommended to disable it whenever you don't need it. Note: iOS Google Maps only.
stopPropagation Boolean false Sets whether this marker should propagate onPress events. Enabling it will stop the parent MapView's onPress from being called. Note: iOS only. Android does not propagate onPress events. See #1132 for more information.
opacity Float 1.0 The marker's opacity between 0.0 and 1.0.
isPreselected Boolean false When true, the marker will be pre-selected. Setting this to true allows the user to drag the marker without needing to tap on it once to focus on it. Note: iOS Apple Maps only.
key String If no key or non-unique key is specified, the <Marker /> will be reused, therefore there is an animation when the position is changed. If you want to disable the animation, add a key prop with a unique value like key_${item.longitude}_${item.latitude}. Note: iOS only.

* ImageSource docs

Events

To access event data, you will need to use e.nativeEvent. For example, onPress={e => console.log(e.nativeEvent)} will log the entire event object to your console.

Event Name Returns Notes
onPress { coordinate: LatLng, position: Point } Callback that is called when the user presses on the marker
onSelect { coordinate: LatLng, position: Point } Callback that is called when the user selects the marker, before the callout is shown. Note: iOS only.
onDeselect { coordinate: LatLng, position: Point } Callback that is called when the marker is deselected, before the callout is hidden. Note: iOS only.
onCalloutPress Callback that is called when the user taps the callout view.
onDragStart { coordinate: LatLng, position: Point } Callback that is called when the user initiates a drag on this marker (if it is draggable)
onDrag { coordinate: LatLng, position: Point } Callback called continuously as the marker is dragged
onDragEnd { coordinate: LatLng, position: Point } Callback that is called when a drag on this marker finishes. This is usually the point you will want to setState on the marker's coordinate again

Methods

Method Name Arguments Notes
showCallout Shows the callout for this marker
hideCallout Hides the callout for this marker
redrawCallout Causes a redraw of the marker's callout. Useful for Google Maps on iOS. Note: iOS only.
animateMarkerToCoordinate coordinate: LatLng, duration: number Animates marker movement. Note: Android only
redraw Causes a redraw of the marker. Useful when there are updates to the marker and tracksViewChanges comes with a cost that is too high.

Types

type LatLng {
  latitude: Number,
  longitude: Number,
}

type Point {
  x: Number,
  y: Number,
}

Children Components

Children components can be added within a Marker and rendered content will replace the marker symbol. This is a way of creating custom markers and allowing use of native SVGs.

Example:

<Marker ...>
 <View style={{backgroundColor: "red", padding: 10}}>
   <Text>SF</Text>
 </View>
</Marker>