从React Native中的Google地方自动填充中获取纬度和经度

Question

我已经为我的地址字段实现了自动填充功能，但是从Google地图位置自动填充功能返回的json不包含这些地方的地理编码坐标。

有些答案似乎不合适。例如，this指的是像google.maps.places.Autocomplete(input, options);这样的东西，我认为它不是React Native中的东西。

其他答案似乎是基于react-native-google-places-autocomplete，但我自己实现了这一点，我很乐意不再使用该模块。

这是我调用API的方法。

  async handleAddressChange() {
    const url = `https://maps.googleapis.com/maps/api/place/autocomplete/json?key=${GoogleAPIKey}&input=${this.state.address}`;
    try {
      const result = await fetch(url);
      const json = await result.json();
      this.setState({ addressPredictions: json.predictions });
    } catch (err) {
      console.error(err);
    }
  }

  setAddress(prediction) { 
    this.setState({ address: prediction.description, showPredictions: false });
  }

API响应上没有任何place或geometry属性：

Object {
  "description": "1234 Some Avenue Northeast, Washington, DC, USA",
  "id": "4c79fba1b3a5ad33478b79b54896a75a4d56ca53",
  "matched_substrings": Array [
    Object {
      "length": 4,
      "offset": 0,
    },
  ],
  "place_id": "ChIJneQ1fBO5t4kRf8mTw4ieb4Q",
  "reference": "ChIJneQ1fBO5t4kRf8mTw4ieb4Q",
  "structured_formatting": Object {
    "main_text": "1234 Some Avenue Northeast",
    "main_text_matched_substrings": Array [
      Object {
        "length": 4,
        "offset": 0,
      },
    ],
    "secondary_text": "Washington, DC, USA",
  },
  "terms": Array [
    Object {
      "offset": 0,
      "value": "1600",
    },
    Object {
      "offset": 5,
      "value": "Maryland Avenue Northeast",
    },
    Object {
      "offset": 32,
      "value": "Washington",
    },
    Object {
      "offset": 44,
      "value": "DC",
    },
    Object {
      "offset": 48,
      "value": "USA",
    },
  ],
  "types": Array [
    "street_address",
    "geocode",
  ],
}

Answer 1

获得地点ID（问题中的示例为ChIJneQ1fBO5t4kRf8mTw4ieb4Q）后，您可以执行地点详细信息请求。

确保在API调用中包含Places库：https://maps.googleapis.com/maps/api/js?libraries=places和有效的API密钥。

function initialize() {

    var map = new google.maps.Map(document.getElementById('map-canvas'), {
        center: new google.maps.LatLng(0, 0),
        zoom: 15
    });

    var service = new google.maps.places.PlacesService(map);

    service.getDetails({
        placeId: 'ChIJneQ1fBO5t4kRf8mTw4ieb4Q'
    }, function(place, status) {
        if (status === google.maps.places.PlacesServiceStatus.OK) {

            // Create marker
            var marker = new google.maps.Marker({
                map: map,
                position: place.geometry.location
            });

            // Center map on place location
            map.setCenter(place.geometry.location);
        }
    });
}

initialize();

#map-canvas {
  height: 160px;
}

<div id="map-canvas"></div>

<!-- Replace the value of the key parameter with your own API key. -->
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initialize">
</script>