我正在使用html 5创建一个
Android应用程序,我想在用户移动时从用户访问latlong.我使用过watchPostion,但它只是一次我的用户位置.
var watchID;
var geoLoc;
function showLocation(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
var ll=new google.maps.LatLng(latitude,longitude);
map.setCenter(ll);
console.log("Latitude : " + latitude + " Longitude: " + longitude);
}
function errorHandler(err) {
if(err.code == 1) {
console.log("Error: Access is denied!");
}else if( err.code == 2) {
console.log("Error: Position is unavailable!");
}
}
if(navigator.geolocation){
// timeout at 60000 milliseconds (60 seconds)
var options = {timeout:60000};
geoLoc = navigator.geolocation;
watchID = geoLoc.watchPosition(showLocation,errorHandler,options);
}else{
console.log("Sorry,browser does not support geolocation!");
}
解决方法
几个月前我一直在做类似的事情.我记得有同样的问题.也许这会有所帮助.
$(document).ready(function(){
initLocationProcedure();
}
function initLocationProcedure() {
map = new google.maps.Map(document.getElementById('map_canvas'),{
zoom : 17
});
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(displayAndWatch,locError,{
enableHighAccuracy : true,timeout : 60000,maximumAge : 0
});
} else {
alert("Your phone does not support the Geolocation API");
}
}
function displayAndWatch(position) {
// set current position
setUserLocation(position);
// watch position
watchCurrentPosition();
}
function setUserLocation(pos) {
// marker for userLocation
userLocation = new google.maps.Marker({
map : map,position : new google.maps.LatLng(pos.coords.latitude,pos.coords.longitude),title : "You are here",icon : "../img/user-location.svg",// scroll to userLocation
map.panTo(new google.maps.LatLng(pos.coords.latitude,pos.coords.longitude));
});
这是你在寻找的
function watchCurrentPosition() {
var positionTimer = navigator.geolocation.watchPosition(function(position) {
setMarkerPosition(userLocation,position);
map.panTo(new google.maps.LatLng(position.coords.latitude,position.coords.longitude));
});
}
function setMarkerPosition(marker,position) {
marker.setPosition(new google.maps.LatLng(position.coords.latitude,position.coords.longitude));
console.log(position);
}
