react-native - 从 React Native 中的视口(viewport)获取 latitudeDelta 和 longitudeDelta

Question

我有这些数据，我也想获取latitudeDelta/longitudeDelta

geometry:{
    location:{
        lat:35.7212504,
        lng:51.36276979999999
    },
    viewport:{
        northeast:{lat: 35.7290254, lng: 51.380868},
        southwest:{lat: 35.7004529, lng: 51.3492823},
    }
}

我将使用此数据获取latitudeDelta/longitudeDelta当然，我会说我使用 react-native-google-places-autocomplete 并且输出此数据

Answer 1

const { width, height } = Dimensions.get('window');

const ASPECT_RATIO = width / height;
const LATITUDE_DELTA = 0.0922;

const lat = details.geometry.location.lat;
const lng = details.geometry.location.lng;
const latDelta = details.geometry.viewport.northeast.lat - details.geometry.viewport.southwest.lat;
const lngDelta = latDelta * ASPECT_RATIO;

let coordinate = {
    latitude: lat,
    longitude: lng,
    latitudeDelta: latDelta,
    longitudeDelta: lngDelta
};