MapView.js

import PropTypes from 'prop-types';
import React from 'react';
import {
    requireNativeComponent
} from 'react-native';

class MapView extends React.Component {
    _onRegionChange = (event) => {
        if (!this.props.onRegionChange) {
            return;
        }
        this.props.onRegionChange(event.nativeEvent);
    }
    render() {
      return (
        <RNTMap 
        {...this.props}
        onRegionChange={this._onRegionChange}
         />
      );
    }
  }

  MapView.prototypes = {
    /**
    * A Boolean value that determines whether the user may use pinch
    * gestures to zoom in and out of the map.
    */
    zoomEnabled: PropTypes.bool,
    /**
     * 地图要显示的区域。
     *
     * 区域由中心点坐标和区域范围坐标来定义。
     *
     */
    region: PropTypes.shape({
        /**
        * 地图中心点的坐标。
        */
        latitude: PropTypes.number.isRequired,
        longitude: PropTypes.number.isRequired,
        /**
         * 最小/最大经、纬度间的距离。
         *
         */
        latitudeDelta: PropTypes.number.isRequired,
        longitudeDelta: PropTypes.number.isRequired,
    }),
    /**
     * Callback that is called continuously when the user is dragging the map.
     */
    onRegionChange: PropTypes.func,
  };

  const RNTMap = requireNativeComponent('RNTMap', MapView);

  export default MapView;