[英]How to have google maps markers in different colors in React Native?
我希望id: 0
的標記為紅色, id: 1
的標記為綠色,但目前兩個標記的顏色相同,紅色或綠色取決於Marker
中的icon
。 有人有建議嗎?
constructor(props) {
super(props);
this.state = {
coordinates: [
{id: 0, latitude: 37.789086, longitude: -122.432216},
{id: 1, latitude: 37.787217, longitude: -122.431830}
],
redMarker: require('./markers/red.png'),
greenMarker: require('./markers/green.png')
}
}
<MapView>
{this.state.coordinates.map((marker, index) => (
<Marker
key = {index}
tracksViewChanges = {false}
coordinate = {{
latitude: marker.latitude,
longitude: marker.longitude
}}
icon = {this.state.greenMarker}>
</Marker>
))}
</MapView>
只需使用模運算符:
icon = {index % 2 === 0 ? this.state.greenMarker : this.state.redMarker}>
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