質問編集履歴
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ソースコード追加
test
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test
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### 質問
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リンクの動画を参考しながら、地図をonPressした時にマーカーがセットされる実装がうまくいきません。react nativeではどのように実現するのでしょうか？
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### コード
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```App
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import MapView, {PROVIDER_GOOGLE, Marker} from 'react-native-maps'; // remove PROVIDER_GOOGLE import if not using Google Maps
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import React, {useState} from 'react';
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import {View, StyleSheet, Alert} from 'react-native';
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export default function App() {
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const [markers, setMarkers] = useState([]);
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return (
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<MapView
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provider={PROVIDER_GOOGLE} // remove if not using Google Maps
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style={styles.map}
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initialRegion={{
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latitude: 35.681236,
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longitude: 139.767125,
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latitudeDelta: 0.025,
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longitudeDelta: 0.0221,
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}}
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onPress={(e) => {
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setMarkers((current) => [
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...current,
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{
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lat: e.latlng.lat(),
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lng: e.latLng.lng(),
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time: new Date(),
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},
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]);
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}}>
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{markers.map((marker) => (
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<Marker
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key={marker.time.toISOString()}
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position={{lat: marker.lat, lng: marker.lng}}
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/>
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))}
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</MapView>
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);
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}
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```
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