如何在React Native的MapView中设置标记

How do I set a marker in MapView of React Native

本文关键字：设置 MapView React Native      更新时间：2023-09-26
  • 我想在React Native中的MapView上设置一个标记，但我无法通过MapView的官方文档找到任何信息
  • 如果不允许这样做，我如何使用现有的react模块，如react Native中的react谷歌地图

谢谢@naoufal。最后，我能够在地图上显示react原生IOS的标记。

<View style={styles.container}>
        <MapView style={styles.map}
          initialRegion={{
              latitude: 37.78825,
              longitude: -122.4324,
              latitudeDelta: 0.0,
              longitudeDelta: 0.0,
          }}
        >
        <MapView.Marker
            coordinate={{latitude: 37.78825,
            longitude: -122.4324}}
            title={"title"}
            description={"description"}
         />
      </MapView>
 </View>

对于地图和容器样式，我使用了以下样式：

 var styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
    map: {
      position: 'absolute',
      top: 0,
      left: 0,
      right: 0,
      bottom: 0,
    }
});

我参考了以下链接：React原生IOS-在地图上显示标记

您可以使用annotations道具设置标记。

例如：

var markers = [
  {
    latitude: 45.65,
    longitude: -78.90,
    title: 'Foo Place',
    subtitle: '1234 Foo Drive'
  }
];
<MapView
  region={...}
  annotations={markers}
/>

import MapView, { Marker } from 'react-native-maps';
<View>
    <MapView
    style={styles.mapStyle}
    initialRegion={{
    latitude: 37.78825,
    longitude: -122.4324,
    latitudeDelta: 0.0922,
    longitudeDelta: 0.0421,
    }}
    >
        <Marker coordinate = {{latitude: 37.78825,longitude: -122.4324}}
         pinColor = {"purple"} // any color
         title={"title"}
         description={"description"}/>
    </MapView>
</View>

对于那些寻找动态（例如，从API）而不是硬编码坐标的人；这是Expo CLI自动生成的一个屏幕的复制/粘贴片段，包括React Hooks:

import axios from "axios";
import MapView from "react-native-maps";
import { Dimensions, StyleSheet } from "react-native";
import { Marker } from "react-native-maps";
import { Text, View } from "../components/Themed";
export default function TabTwoScreen() {
  const [markers, setMarkers] = useState(null);
  useEffect(() => {
    axios({
      method: "GET",
      url: "https://API_URL...",
      headers: {
        Authorization: `Bearer MY_TOKEN_ABC123...`,
        Accept: "application/json",
      },
    })
      .then((response) => {
        setMarkers(response.data.results);
      })
      .catch((error) => {
        console.log(error);
      });
  }, []); // "[]" makes sure the effect will run only once.
  return (
    <View style={styles.container}>
      <Text style={styles.title}>Tab Two</Text>
      <MapView style={styles.map}>
        {markers &&
          markers.map((marker: any, index: number) => (
            <Marker
              key={index}
              coordinate={{
                latitude: marker.location[1],
                longitude: marker.location[0],
              }}
              title={marker.title}
              description={marker.description}
            />
          ))}
      </MapView>
    </View>
  );
}
const styles = StyleSheet.create({
  // Add your styles here...
});

更新代码-2020|React Native 0.63

import MapView, { Marker } from "react-native-maps";
<MapView
    style={styles.mapStyle}
    region={{
        latitude: this.state.mapLat,
        longitude: this.state.mapLong,
        latitudeDelta: 0.001663,
        longitudeDelta: 0.002001,
            }}
        onRegionChangeComplete={this.onRegionChange}
>
    <Marker
        coordinate={{latitude: 51.5078788, longitude: -0.0877321}}
    >
    </Marker>
</MapView>

根据这个问题，它还没有公开。你也不能使用网络React包，React Native不能这样工作。

两个建议：

  1. 等待上述问题得到解决，以获得正确的API
  2. 尝试使用WebView链接到带有注释的谷歌地图

不过，我实际上并不确定#2是否可行。

import MapView from 'react-native-maps';
<View style={StyleSheet.absoluteFillObject}>
        <MapView style={styles.map}
          showsUserLocation //to show user current location when given access
          loadingEnabled //to show loading while map loading
          style={styles.map}
          initialRegion={{
              latitude,
              longitude,
              latitudeDelta: 0.0922,
              longitudeDelta: 0.0421,
          }}
        >
        {
             locations && locations.map((location, index) => {
                   const {
                       coords: { latitude, longitude }
                          } = location;
                                return (
                                    <MapView.Marker
                                        key={index}
                                        coordinate={{ latitude, longitude }}
                                        title={"title"}
                                        description={"address"}
                                        // onPress={this.onMarkerPress(location)}
                                    />
                                )
                            })
                        }
      </MapView>
 </View>```

const styles=样式表.create（｛

map: {
  position: 'absolute',
  top: 0,
  left: 0,
  right: 0,
  bottom: 0,
}

})；

"依赖项"：{"本地基础"："^2.13.8"，"react"："16.9.0"，"天然反应"："0.61.2"，"react本机映射"："git+https://git@github.com/react native community/rect native maps.git"}，


Try using this. Hope it helps to mark for many locations. Happy Coding.

谢谢@zia_qureshi。最后，我能够在地图上为react原生android显示标记。

import MapView, { Marker } from "react-native-maps";
const App = () => {
  const [region, setRegion] = useState({
    latitude: 51.5078788,
    longitude: -0.0877321,
    latitudeDelta: 0.009,
    longitudeDelta: 0.009
  });
  return (
    <MapView
      style={{ flex: 1 }}
      region={region}
      onRegionChangeComplete={region => setRegion(region)}
    >
      <Marker coordinate={{ latitude: 51.5078788, longitude: -0.0877321 }} />
    </MapView>
  );
};
export default App;

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