有没有办法自定义Google的自动完成地址结果？

Question

我想自定义自动建议结果。我想在结果顶部添加另外两个地址。可以使用谷歌api吗？ 为了更多的理解，我把我的应用程序屏幕贴在这里。我正在那里输入地址。它显示预测的地址，如何在结果顶部添加 2 个地址。

Answer 1

您不能使用 Autocomplete 类做太多事情，至少不能使用任何记录的方法。您可以使用 Autocomplete Service 类和

getPlacePredictions

方法来模仿标准自动完成的行为。

这意味着您必须构建自己的 UI 和行为，但它也为您提供了更大的灵活性，可以按照您想要的方式设置样式，并且它将允许您轻松添加自定义地址。

这是一个简单的例子。它只是在顶部添加两个自定义地址。您必须实现 2 个自定义地址背后的逻辑，因为当前单击它们时不会发生任何事情。但这不是最棘手的部分，这个示例已经展示了您可以用它做很多事情。

let autocompleteService, placesService, results, map;

function initialize() {

  results = document.getElementById('results');

  const mapOptions = {
    zoom: 5,
    center: new google.maps.LatLng(50, 50)
  };

  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

  // Bind listener for address search
  google.maps.event.addDomListener(document.getElementById('address'), 'input', function() {

    results.style.display = 'block';
    getPlacePredictions(document.getElementById('address').value);
  });

  // Show results when address field is focused (if not empty)
  google.maps.event.addDomListener(document.getElementById('address'), 'focus', function() {

    if (document.getElementById('address').value !== '') {

      results.style.display = 'block';
      getPlacePredictions(document.getElementById('address').value);
    }
  });

  // Hide results when click occurs out of the results and inputs
  google.maps.event.addDomListener(document, 'click', function(e) {

    if ((e.target.parentElement.className !== 'pac-container') && (e.target.parentElement.className !== 'pac-item') && (e.target.tagName !== 'INPUT')) {

      results.style.display = 'none';
    }
  });

  autocompleteService = new google.maps.places.AutocompleteService();
  placesService = new google.maps.places.PlacesService(map);
}

// Get place predictions
function getPlacePredictions(search) {

  autocompleteService.getPlacePredictions({
    input: search,
    types: ['establishment', 'geocode']
  }, callback);
}

// Get place details
function getPlaceDetails(placeId) {

  const request = {
    placeId: placeId
  };

  placesService.getDetails(request, function(place, status) {

    if (status === google.maps.places.PlacesServiceStatus.OK) {

      const center = place.geometry.location;
      const marker = new google.maps.Marker({
        position: center,
        map: map
      });

      map.setCenter(center);

      // Hide autocomplete results
      results.style.display = 'none';
    }
  });
}

// Place search callback
function callback(predictions, status) {

  // Empty results container
  results.innerHTML = '';

  // Place service status error
  if (status != google.maps.places.PlacesServiceStatus.OK) {
    results.innerHTML = '<div class="pac-item pac-item-error">Your search returned no result. Status: ' + status + '</div>';
    return;
  }

  // Build output with custom addresses
  results.innerHTML += '<div class="pac-item custom"><span class="pac-icon pac-icon-marker"></span>My home address</div>';
  results.innerHTML += '<div class="pac-item custom"><span class="pac-icon pac-icon-marker"></span>My work address</div>';

  // Build output for each prediction
  for (let i = 0, prediction; prediction = predictions[i]; i++) {

    // Insert output in results container
    results.innerHTML += '<div class="pac-item" data-placeid="' + prediction.place_id + '" data-name="' + prediction.terms[0].value + '"><span class="pac-icon pac-icon-marker"></span>' + prediction.description + '</div>';
  }

  const items = document.getElementsByClassName("pac-item");

  // Results items click
  for (let i = 0, item; item = items[i]; i++) {

    item.onclick = function() {

      if (this.dataset.placeid) {
        getPlaceDetails(this.dataset.placeid);
      }
    };
  }
}

google.maps.event.addDomListener(window, 'load', initialize);

body,
html {
  font-family: Arial, sans-serif;
  padding: 0;
  margin: 0;
  height: 100%;
}

#map-canvas {
  height: 130px;
  margin-bottom: 10px;
}

table {
  border-collapse: collapse;
  margin-left: 20px;
}

table td {
  padding: 3px 5px;
}

label {
  display: inline-block;
  width: 160px;
  font-size: 11px;
  color: #777;
}

input {
  border: 1px solid #ccc;
  width: 170px;
  padding: 3px 5px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .1);
}

.pac-container {
  background-color: #fff;
  z-index: 1000;
  border-radius: 2px;
  font-size: 11px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .3);
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  overflow: hidden;
  width: 350px;
}

.pac-icon {
  width: 15px;
  height: 20px;
  margin-right: 7px;
  margin-top: 6px;
  display: inline-block;
  vertical-align: top;
  background-image: url(https://maps.gstatic.com/mapfiles/api-3/images/autocomplete-icons.png);
  background-size: 34px;
}

.pac-icon-marker {
  background-position: -1px -161px;
}

.pac-item {
  cursor: pointer;
  padding: 0 4px;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  line-height: 30px;
  vertical-align: middle;
  text-align: left;
  border-top: 1px solid #e6e6e6;
  color: #999;
}

.pac-item.custom {
  background-color: #FFF9C4;
}

.pac-item:hover {
  background-color: #efefef;
}

.pac-item-error,
.pac-item-error:hover {
  color: #aaa;
  padding: 0 5px;
  cursor: default;
  background-color: #fff;
}

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

<div id="map-canvas"></div>
<table>
  <tr>
    <td>
      <label for="address">Address:</label>
    </td>
  </tr>
  <tr>
    <td>
      <input id="address" placeholder="Enter address" type="text" tabindex="1" />
    </td>
  </tr>
  <tr>
    <td colspan="2">
      <div id="results" class="pac-container"></div>
    </td>
  </tr>
</table>

大部分代码都带有注释，因此它应该不言而喻。

JSFiddle 演示

Answer 2

如果有人需要使用箭头键浏览结果，除了 MrUpsidown 提供的示例之外，我还编写了类似的内容。

函数 nextAll 和 prevAll 可能可以简化为 next 和 prev，但我必须使用它们，因为结果中有一些不同类（而不是 .pac-item）的划分元素。

// move through options on key down or up
$(input).keydown(function(e) {
      switch (e.which) {
        case 40: // move down
          e.preventDefault(); // prevent moving the cursor
          if(document.querySelector('.pac-item-selected') == null)
              $('.pac-item').first().addClass('pac-item-selected');
          else {
              var i = $('.pac-item:not(:last-child).pac-item-selected').nextAll('.pac-item');
              if(i.length > 0){
                  $('.pac-item:not(:last-child).pac-item-selected').removeClass('pac-item-selected');
                  i[0].classList.add('pac-item-selected');
              }
          }
          break;
        case 38: // move up
          e.preventDefault(); // prevent moving the cursor
          var i = $('.pac-item:not(:first-child).pac-item-selected').prevAll('.pac-item');
          if(i.length > 0){
              $('.pac-item:not(:first-child).pac-item-selected').removeClass('pac-item-selected');
              i[0].classList.add('pac-item-selected');
          }
          break;
        case 13: // submit when enter is pressed
            e.preventDefault();
            if(document.querySelector('.pac-item-selected') == null)
                $('.pac-item').first().click();
            else
                $('.pac-item-selected').click();
            break;
      }
});

$(document).on({ // remove selected class on hover
    mouseenter: function () {
        $('.pac-item-selected').removeClass('pac-item-selected');
    }
}, ".pac-item");