for (int j = 0; j < msgObject.length(); j++) {
JSONObject d = msgObject.getJSONObject(j);
Startlongitude = d.getString("SfltLogitude");
Startlattitude = d.getString("Sfltlattitude");
Endlongitude = d.getString("EfltLogitude");
Endlattitude = d.getString("Efltlattitude");
Eat = Double.parseDouble(Endlattitude);
Elot = Double.parseDouble(Endlongitude);
lat = Double.parseDouble(Startlattitude);
lon = Double.parseDouble(Startlongitude);
latlon = new LatLng(lat, lon);
latlon2 = new LatLng(Eat, Elot);
}
break;
这些是lat我从服务器上回来,已经解析为double ..但现在我不知道如何绘制谷歌地图?
答案 0 :(得分:0)
您需要添加一个名为map的div,然后在文档加载时调用initMap方法。
如果您在加载页面时没有数据,可以将json for循环移动到另一种方法。
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 4,
center: myLatLng
});
for(int j=0;j < *array length*; j++)
JSONObject d=msgObject.getJSONObject(j);
Startlongitude=d.getString("SfltLogitude");
Startlattitude=d.getString("Sfltlattitude");
Endlongitude = d.getString("EfltLogitude");
Endlattitude = d.getString("Efltlattitude");
Elat=Double.parseDouble(Endlattitude);
Elot=Double.parseDouble(Endlongitude);
lat=Double.parseDouble(Startlattitude);
lon=Double.parseDouble(Startlongitude);
var startLatLng = {lat: lat, lng: lon};
var endLatLng = {lat: Elat, lng: Elot};
var startmarker = new google.maps.Marker({
position: startLatLng,
map: map,
title: 'Start Marker'+j
});
var endmarker = new google.maps.Marker({
position: endLatLng,
map: map,
title: 'End Marker'+j
});
}
}