向react-native-map添加国家/地区视图

npm install react-native-maps --save

import MapView from 'react-native-maps';

render() {
  return (
    <MapView
      style={{ flex: 1 }}
      initialRegion={{
        latitude: 37.78825,
        longitude: -122.4324,
        latitudeDelta: 0.0922,
        longitudeDelta: 0.0421,
      }}
    />
  );
}

import { Polygon } from 'react-native-maps';

render() {
  return (
    <MapView
      style={{ flex: 1 }}
      initialRegion={{
        latitude: 37.78825,
        longitude: -122.4324,
        latitudeDelta: 0.0922,
        longitudeDelta: 0.0421,
      }}
    >
      <Polygon
        coordinates={[
          { latitude: 37.78825, longitude: -122.4324 },
          { latitude: 37.75825, longitude: -122.4624 },
          { latitude: 37.74825, longitude: -122.4424 },
        ]}
        fillColor="rgba(0, 0, 255, 0.5)"
      />
    </MapView>
  );
}