我的MVC 5项目中有一个谷歌地图，上面有起点位置和目的地位置。我需要将源位置更改为设置的地址，并且永远不要更改，而不是每次需要使用它时都键入地址。
它的两个文本字段具有起始位置和目标位置。我希望它仅设置为一个物理地址的源位置。
以下是我的代码：
<!DOCTYPE html>
<html>
<head >
<title>Place Autocomplete</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 10%;
width:100%;
padding-top: 800px;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 10%;
width:100%;
}
.controls {
margin-top: 10px;
border: 1px solid transparent;
border-radius: 2px 0 0 2px;
box-sizing: border-box;
-moz-box-sizing: border-box;
height: 32px;
outline: none;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
#origin-input,
#destination-input {
background-color: #fff;
font-family: Roboto;
font-size: 15px;
font-weight: 300;
margin-left: 12px;
padding: 0 11px 0 13px;
text-overflow: ellipsis;
width: 200px;
}
#origin-input:focus,
#destination-input:focus {
border-color: #4d90fe;
}
#mode-selector {
color: #fff;
background-color: #4d90fe;
margin-left: 12px;
padding: 5px 11px 0px 11px;
}
#mode-selector label {
font-family: Roboto;
font-size: 13px;
font-weight: 300;
}
</style>
</head>
<body>
<input id="origin-input" class="controls" type="text"
value ="8 Parsia Lane, Tongaat, South Africa" >
<input id="destination-input" class="controls" type="text"
placeholder="Enter a destination location">
<div id="mode-selector" class="controls">
<input type="radio" name="type" id="changemode-walking" checked="checked">
<label for="changemode-walking">Walking</label>
<input type="radio" name="type" id="changemode-transit">
<label for="changemode-transit">Transit</label>
<input type="radio" name="type" id="changemode-driving">
<label for="changemode-driving">Driving</label>
</div>
<div id="map"></div>
<script>
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
mapTypeControl: false,
center: {lat: -33.8688, lng: 151.2195},
zoom: 13
});
new AutocompleteDirectionsHandler(map);
}
//
function AutocompleteDirectionsHandler(map) {
this.map = map;
this.originPlaceId = null;
this.destinationPlaceId = null;
this.travelMode = 'WALKING';
var originInput = document.getElementById('origin-input');
var destinationInput = document.getElementById('destination-input');
var modeSelector = document.getElementById('mode-selector');
this.directionsService = new google.maps.DirectionsService;
this.directionsDisplay = new google.maps.DirectionsRenderer;
this.directionsDisplay.setMap(map);
var originAutocomplete = new google.maps.places.Autocomplete(
originInput, {placeIdOnly: true});
var destinationAutocomplete = new google.maps.places.Autocomplete(
destinationInput, {placeIdOnly: true});
this.setupClickListener('changemode-walking', 'WALKING');
this.setupClickListener('changemode-transit', 'TRANSIT');
this.setupClickListener('changemode-driving', 'DRIVING');
this.setupPlaceChangedListener(originAutocomplete, 'ORIG');
this.setupPlaceChangedListener(destinationAutocomplete, 'DEST');
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(originInput);
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(destinationInput);
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(modeSelector);
}
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
AutocompleteDirectionsHandler.prototype.setupClickListener = function(id, mode) {
var radioButton = document.getElementById(id);
var me = this;
radioButton.addEventListener('click', function() {
me.travelMode = mode;
me.route();
});
};
AutocompleteDirectionsHandler.prototype.setupPlaceChangedListener = function(autocomplete, mode) {
var me = this;
autocomplete.bindTo('bounds', this.map);
autocomplete.addListener('place_changed', function() {
var place = autocomplete.getPlace();
if (!place.place_id) {
window.alert("Please select an option from the dropdown list.");
return;
}
if (mode === 'ORIG') {
me.originPlaceId = place.place_id;
} else {
me.destinationPlaceId = place.place_id;
}
me.route();
});
};
AutocompleteDirectionsHandler.prototype.route = function() {
if (!this.originPlaceId || !this.destinationPlaceId) {
return;
}
var me = this;
this.directionsService.route({
origin: {'placeId': this.originPlaceId},
destination: {'placeId': this.destinationPlaceId},
travelMode: this.travelMode
}, function(response, status) {
if (status === 'OK') {
me.directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
};
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAcXA5KHYBhOQPuV3ygleDCPu8w2BHq4OY&libraries=places&callback=initMap"
async defer></script>
</body>
</html>按如下所示更新代码：
<!DOCTYPE html>
<html>
<head >
<title>Place Autocomplete</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 80%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
/* #map {
height: 100%;
width:100%;
padding-top: 800px;
}
html, body {
height: 10%;
width:100%;
top: 0;
bottom: 0;
} */
.controls {
margin-top: 10px;
border: 1px solid transparent;
border-radius: 2px 0 0 2px;
box-sizing: border-box;
-moz-box-sizing: border-box;
height: 32px;
outline: none;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
#origin-input,
#destination-input {
background-color: #fff;
font-family: Roboto;
font-size: 15px;
font-weight: 300;
margin-left: 12px;
padding: 0 11px 0 13px;
text-overflow: ellipsis;
width: 200px;
}
#origin-input:focus,
#destination-input:focus {
border-color: #4d90fe;
}
#mode-selector {
color: #fff;
background-color: #4d90fe;
margin-left: 12px;
padding: 5px 11px 0px 11px;
}
#mode-selector label {
font-family: Roboto;
font-size: 13px;
font-weight: 300;
}
</style>
</head>
<body>
<header>
<h2>This is my header</h2>
</header>
<input id="origin-input" class="controls" type="text"
value ="Sydney, Australia" >
<input id="destination-input" class="controls" type="text"
placeholder="Enter a destination location">
<div id="mode-selector" class="controls">
<input type="radio" name="type" id="changemode-walking" checked="checked">
<label for="changemode-walking">Walking</label>
<input type="radio" name="type" id="changemode-transit">
<label for="changemode-transit">Transit</label>
<input type="radio" name="type" id="changemode-driving">
<label for="changemode-driving">Driving</label>
</div>
<div id="map"></div>
<script>
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
mapTypeControl: false,
center: {lat: -33.8688, lng: 151.2195},
zoom: 13
});
new AutocompleteDirectionsHandler(map);
}
//
function AutocompleteDirectionsHandler(map) {
this.map = map;
this.originPlaceId = null;
this.destinationPlaceId = null;
this.travelMode = 'WALKING';
var originInput = document.getElementById('origin-input');
var destinationInput = document.getElementById('destination-input');
var modeSelector = document.getElementById('mode-selector');
this.directionsService = new google.maps.DirectionsService;
this.directionsDisplay = new google.maps.DirectionsRenderer;
this.directionsDisplay.setMap(map);
// var originAutocomplete = new google.maps.places.Autocomplete(
// originInput, {placeIdOnly: true});
var destinationAutocomplete = new google.maps.places.Autocomplete(
destinationInput, {placeIdOnly: true});
this.setupClickListener('changemode-walking', 'WALKING');
this.setupClickListener('changemode-transit', 'TRANSIT');
this.setupClickListener('changemode-driving', 'DRIVING');
// this.setupPlaceChangedListener(originAutocomplete, 'ORIG');
this.setupPlaceChangedListener(destinationAutocomplete, 'DEST');
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(originInput);
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(destinationInput);
this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(modeSelector);
}
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
AutocompleteDirectionsHandler.prototype.setupClickListener = function(id, mode) {
var radioButton = document.getElementById(id);
var me = this;
radioButton.addEventListener('click', function() {
me.travelMode = mode;
me.route();
});
};
AutocompleteDirectionsHandler.prototype.setupPlaceChangedListener = function(autocomplete, mode) {
var me = this;
autocomplete.bindTo('bounds', this.map);
autocomplete.addListener('place_changed', function() {
var place = autocomplete.getPlace();
if (!place.place_id) {
window.alert("Please select an option from the dropdown list.");
return;
}
if (mode === 'ORIG') {
me.originPlaceId = place.place_id;
} else {
me.destinationPlaceId = place.place_id;
}
me.route();
});
};
AutocompleteDirectionsHandler.prototype.route = function() {
//if (!this.originPlaceId || !this.destinationPlaceId) {
if (!this.destinationPlaceId) {
return;
}
var me = this;
this.directionsService.route({
origin: document.getElementById('origin-input').value,
destination: {'placeId': this.destinationPlaceId},
travelMode: this.travelMode
}, function(response, status) {
if (status === 'OK') {
me.directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
};
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAcXA5KHYBhOQPuV3ygleDCPu8w2BHq4OY&libraries=places&callback=initMap"
async defer></script>