我正在尝试使用 HTML5 的地理定位功能。我有一个函数来获取坐标,然后另一个函数在调用 Google Maps API 时使用这些坐标。如果我手动指定纬度和经度,效果很好,但由于某种原因它不能以这种方式工作,我只得到一张空地图,控件在那里,但没有实际地图。我相信代码是正确的,但也许我忽略了一些东西。
这是代码:
var x = document.getElementById("msg");
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition, showError);
}
else { x.innerHTML = "Geolocation is not supported by this browser."; }
}
function showPosition(position) {
var mapOptions = {
center: new google.maps.LatLng(position.coords.latitude + ", " + position.coords.longitude),
zoom: 5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("Map"), mapOptions);
var acOptions = {
types: ['establishment']
};
var autocomplete = new google.maps.places.Autocomplete(document.getElementById('autocomplete'), acOptions);
autocomplete.bindTo('bounds', map);
var infoWindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map
});
google.maps.event.addListener(autocomplete, 'place_changed', function () {
infoWindow.close();
var place = autocomplete.getPlace();
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17);
}
marker.setPosition(place.geometry.location);
infoWindow.setContent('<div><strong>' + place.name + '</strong><br />');
infoWindow.open(map, marker);
google.maps.event.addListener(marker, 'click', function (e) {
infoWindow.open(map, marker);
});
});
var x = document.getElementById("msg");
x.innerHTML = position.coords.latitude + ", " + position.coords.longitude;
}
function showError(error) {
switch (error.code) {
case error.PERMISSION_DENIED:
x.innerHTML = "User denied the request for Geolocation."
break;
case error.POSITION_UNAVAILABLE:
x.innerHTML = "Location information is unavailable."
break;
case error.TIMEOUT:
x.innerHTML = "The request to get user location timed out."
break;
case error.UNKNOWN_ERROR:
x.innerHTML = "An unknown error occurred."
break;
}
}
google.maps.event.addDomListener(window, 'load', getLocation);