我正在整合Google地图,用户会在其位置放置一个图钉。然后我使用dragend事件来获取lat和lng。我有以下代码,但我一直收到以下错误:
int current = 0;
private void Button1_Click(object sender, EventArgs e)
{
current = bindingSource1.Position;
tableAdapter1.Fill(dataSet1.Table1);
bindingSource1.Position = Math.Min(current + 1, bindingSource1.Count - 1);
}
问题是什么?
<style name="myTextStyle" parent="AppTheme">
<item name="android:textColor">#FF0000</item>
<item name="android:textSize">10sp</item>
</style>
我也有:
Uncaught TypeError: Cannot read property 'lat' of undefined(…)
当然这应该有用吗?
答案 0 :(得分:0)
JavaScript区分大小写,因此您需要以这种方式对待它 试试
document.getElementById("latbox").value = event.latLng.lat();
document.getElementById("lngbox").value = event.latLng.lng();
(注意l
中的小写latLng
)
答案 1 :(得分:0)
MouseEvent没有.LatLng
属性。 Javascript区分大小写,属性名称为.latLng
变化:
google.maps.event.addListener(marker, 'dragend', function (event) {
document.getElementById("latbox").value = event.LatLng.lat();
document.getElementById("lngbox").value = event.LatLng.lng();
});
要:
google.maps.event.addListener(marker, 'dragend', function (event) {
document.getElementById("latbox").value = event.latLng.lat();
document.getElementById("lngbox").value = event.latLng.lng();
});
代码段
function initialize() {
var map;
var latlng = new google.maps.LatLng(-17.86389, 31.02972);
var myOptions = {
zoom: 10,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
// Creating a marker and positioning it on the map
var marker = new google.maps.Marker({
position: new google.maps.LatLng(-17.86389, 31.02972),
map: map,
draggable: true,
title: "Drag pin to your exact store location."
});
google.maps.event.addListener(marker, 'dragend', function(event) {
document.getElementById("latbox").value = event.latLng.lat();
document.getElementById("lngbox").value = event.latLng.lng();
});
}
google.maps.event.addDomListener(window, "load", initialize);
&#13;
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
&#13;
<script src="https://maps.googleapis.com/maps/api/js"></script>
<input size="20" type="text" id="latbox" name="lat">
<input size="20" type="text" id="lngbox" name="lng">
<div id="map_canvas" style="width:100%; height:100%"></div>
&#13;