谷歌地图API3,折线不在中心,也没有放大 [英] Google maps API3, polyline is not in the center and not zoomed
问题描述
我在如何在中心获得多段线的问题上得到了答案,但问题在于此。
当我想看地图时。地图只在我的div的左上角初始化。当我调用这个函数时:
setTimeout(function(){
google.maps.event.trigger(map ,'resize');
},200);
我可以在整个div中看到地图,但折线不会缩放,而是位于上部
我该怎么办?
我的代码:
全局定义:
var flightPlanCoordinates = [];
var flightPath;
var map;
var myLatLng = new google.maps.LatLng(0,0);
var mapOptions = {
zoom:5,
center:myLatLng,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
后来使用的代码...
<$ p
$'$'$'$'$ $ $'$'$'$'$'$'$'$'$'$'$' :$('#select-choice-year1')。val(),
'd_month1':$('#select-choice-month1')。val(),
'd_day1':$ ('#select-choice-day1')。val(),
'd_year2':$('#select-choice-year2')。val(),
'd_month2':$(' val(),
'd_day2':$('#select-choice-month2')。val()数据)//收到响应时执行回调
{
if(data ==[])
{
alert(None );
} else
{
data = JSON.parse(data);
for(var i = 0; i< data.length; i ++)
{
flightPlanCoordinates [i] = new google.maps.LatLng(data [i] .x ,数据[I] .Y);
}
map = new google.maps.Map(document.getElementById(map_find),
mapOptions);
flightPath = new google.maps.Polyline({
path:flightPlanCoordinates,
strokeColor:#8a2be2,
strokeOpacity:1.0,
strokeWeight:3
});
flightPath.setMap(map);
zoomToObject(flightPath);
}
}
});
以及用于缩放和居中多段线的功能:
function zoomToObject(obj){
var bounds = new google.maps.LatLngBounds();
var points = obj.getPath()。getArray();
for(var n = 0; n bounds.extend(points [n]);
}
map.fitBounds(bounds);
setTimeout(function(){
google.maps.event.trigger(map,'resize');
},200);
$ / code>
那么如何真正初始化地图以适应整个div,以及如何缩放和中心多段线适合地图吗?
更改您的缩放&中心函数为:
function zoomToObject(obj){
var bounds = new google.maps.LatLngBounds();
var points = obj.getPath()。getArray();
for(var n = 0; n bounds.extend(points [n]);
}
map.fitBounds(bounds);
setTimeout(function(){
google.maps.event.trigger(map,'resize');
map.fitBounds(bounds);
},200);
$ / code>
或者在调用它之前触发地图大小调整事件(在AJAX回调中) 。
I got the answer on my question of how to get polyline in the center but here is the problem. When I want to see the map. Map is only initialized in the upper left corner of my div. And when I call this function:
setTimeout(function() {
google.maps.event.trigger(map,'resize');
}, 200);
I can see the map in the entire div but the polyline is not zoomed and it is inside the upper left corner.
what should I do?
My code:
Global define:
var flightPlanCoordinates=[];
var flightPath;
var map;
var myLatLng = new google.maps.LatLng(0, 0);
var mapOptions = {
zoom: 5,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
Later used code...
$.ajax({
type: 'POST',
url: 'history.php',
data: {
'd_year1':$('#select-choice-year1').val(),
'd_month1': $('#select-choice-month1').val(),
'd_day1':$('#select-choice-day1').val(),
'd_year2':$('#select-choice-year2').val(),
'd_month2': $('#select-choice-month2').val(),
'd_day2':$('#select-choice-day2').val()
},
success: function(data)//callback to be executed when the response has been received
{
if(data=="[]")
{
alert("None");
}else
{
data = JSON.parse(data);
for (var i=0;i<data.length;i++)
{
flightPlanCoordinates[i] = new google.maps.LatLng(data[i].x,data[i].y);
}
map = new google.maps.Map(document.getElementById("map_find"),
mapOptions);
flightPath = new google.maps.Polyline({
path: flightPlanCoordinates,
strokeColor: "#8a2be2",
strokeOpacity: 1.0,
strokeWeight: 3
});
flightPath.setMap(map);
zoomToObject(flightPath);
}
}
});
And the function for zoom and center the polyline:
function zoomToObject(obj){
var bounds = new google.maps.LatLngBounds();
var points = obj.getPath().getArray();
for (var n = 0; n < points.length ; n++){
bounds.extend(points[n]);
}
map.fitBounds(bounds);
setTimeout(function() {
google.maps.event.trigger(map,'resize');
}, 200);
}
So how to really initialize the map to fit entire div and how to zoom and center polylines to fit the map?
Change your zoom & center function to:
function zoomToObject(obj){
var bounds = new google.maps.LatLngBounds();
var points = obj.getPath().getArray();
for (var n = 0; n < points.length ; n++){
bounds.extend(points[n]);
}
map.fitBounds(bounds);
setTimeout(function() {
google.maps.event.trigger(map,'resize');
map.fitBounds(bounds);
}, 200);
}
Or trigger the map resize event before you call it (inside the AJAX callback).
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