我遇到了一些奇怪的事情,我的自定义Google地图在手机或平板电脑上看不到。但在桌面上它工作正常。我无法理解这个问题。
我的HTML如下:
<div class="wrapper">
<div id="maps-canvas"></div>
<div class="clearfix"></div>
</div>
我的自定义JS:
$(window).bind("load", function () {
if ($('#maps-canvas').length) {
CustomGoogleMaps();
}
});
function CustomGoogleMaps() {
// Creating a LatLng object containing the coordinate for the center of the map
var latlng = new google.maps.LatLng(52.145022, 5.422421);
var map = new google.maps.Map(document.getElementById('maps-canvas'), {
//options
zoom: 18, // This number can be set to define the initial zoom level of the map
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP, // This value can be set to define the map type ROADMAP/SATELLITE/HYBRID/TERRAIN
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL,
position: google.maps.ControlPosition.LEFT_BOTTOM
},
scaleControl: true,
streetViewControl: true,
streetViewControlOptions: {
position: google.maps.ControlPosition.LEFT_BOTTOM
}
});
// Detect the resize event and keep marker in center when on resize
google.maps.event.addDomListener(window, "resize", function () {
var center = map.getCenter();
google.maps.event.trigger(map, "resize");
map.setCenter(center);
});
// Define Marker properties
var imagePath = "http://google-maps-icons.googlecode.com/files/sailboat-tourism.png";
var image = new google.maps.MarkerImage(imagePath,
// This marker is 75 pixels wide by 101 pixels tall.
new google.maps.Size(75, 101),
// The origin for this image is 0,0.
new google.maps.Point(0, 0),
// The anchor for this image is the base of the flagpole at 18,101.
new google.maps.Point(18, 101)
);
// Add Marker
var marker1 = new google.maps.Marker({
position: new google.maps.LatLng(52.145022, 5.422421),
map: map,
icon: image, // This path is the custom pin to be shown. Remove this line and the proceeding comma to use default pin
animation: google.maps.Animation.DROP, // Animate drop effect of the marker
position: latlng // The position should be the latlng coordinates
});
// Add listener for a click on the pin
google.maps.event.addListener(marker1, 'click', function () {
infowindow1.open(map, marker1);
});
// Add information window
//change address details here
var contentString = '<div class="map-info-box">'
+ '<div class="map-head">'
+ '<h3>Company Title</h3></div>'
+ '<p class="map-address">My Address</p>';
var infowindow1 = new google.maps.InfoWindow({
content: contentString,
});
// Create information window
function createInfo(title, content) {
return '<div class="maps-info-window"><strong>' + title + '</strong><br />' + content + '</div>';
}
}
希望有人能帮助我走正确的道路。
答案 0 :(得分:3)
这是我上述解决方案的一个更简单的替代方案:
$(window).bind("load", function () {
// Remove this next block of code, or comment out, because I think it is calling your function before it is available
//if ($('#maps-canvas').length) {
//CustomGoogleMaps();
//}
});
相反,无论您将脚本排入队列,都要将该函数添加为回调:
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?callback=CustomGoogleMaps"></script>
如果这样有效,我们至少知道这是一个时间问题。
答案 1 :(得分:0)
您如何将Google Maps API脚本排入队列?这可能是一个时间问题。它可能在桌面上加载得更快,因此当您的代码尝试调用时它始终可用:
var latlng = new google.maps.LatLng(52.145022, 5.422421);
var map = new google.maps.Map(document.getElementById('maps-canvas') .....
库可能在移动设备上加载较慢,因此当您尝试调用google.maps函数时,脚本尚未就绪,这会导致错误,从而阻止您的地图加载。
在尝试调用其函数之前,有很多方法可以确保您的库已加载。这是我最近使用的方法:
CustomGoogleMaps = (function(){
var googleMapsLoaded = $.Deferred();
var init = function(){
var self = this;
googleMapsLoaded.done( function(){
self.initializeMap();
});
}
var initializeMap = function(){
// initialize your map here
var map = new google.maps.Map("yourMapContainer") // etc....
}
// rest of your google maps stuff here
return {
googleMapsLoaded : googleMapsLoaded,
init : init,
initializeMap : initializeMap
}
})();
然后,在您将脚本排入队列的情况下,您实际上可以将回调作为参数传递,并且该函数将在Google地图库可用后运行,如下所示:
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?callback=CustomGoogleMaps.googleMapsLoaded.resolve"></script>
无论您在哪里尝试初始化地图:
CustomGoogleMaps.Init()
这是如何工作的:
您的JS运行CustomGoogleMaps.Init()函数。如果已经解决了GoogleMapsLoaded承诺(意味着库已准备好),则您的initializeMap()函数将继续并立即运行。如果不是,它将等待该承诺得到解决。如果它正在等待解析,一旦你的谷歌地图脚本加载,它将运行
CustomGoogleMaps.googleMapsLoaded().resolve()
将解析promise,因此initializeMap()函数(当前正在等待解析的承诺)将运行,并且您可以启动映射初始化。
编辑:
我的建议要求对代码进行一些相对重要的结构更改。一个更快,更简单的解决方案是将您的CustomGoogleMaps功能作为回调传递,如下所示:
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?callback=CustomGoogleMaps"></script>