我正在尝试使用嵌入式GPS定位设备(如应用程序共享位置)。我已经读过qazxsw poi有可能。
如何在此代码中设置enableHighAccuracy: true
?我试过不同的位置,但它不起作用。
enableHighAccuracy: true
你需要一个<script type="text/javascript">
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
var accuracy = position.coords.accuracy;
var coords = new google.maps.LatLng(latitude, longitude);
var mapOptions = {
zoom: 15,
center: coords,
mapTypeControl: true,
navigationControlOptions: {
style: google.maps.NavigationControlStyle.SMALL
},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var capa = document.getElementById("capa");
capa.innerHTML = "latitude: " + latitude + ", longitude: " + ", accuracy: " + accuracy;
map = new google.maps.Map(document.getElementById("mapContainer"), mapOptions);
var marker = new google.maps.Marker({
position: coords,
map: map,
title: "ok"
});
});
} else {
alert("Geolocation API is not supported in your browser.");
}
</script>
对象,你可以在API中设置高精度标志。
我在这里引用:PositionOptions
getCurrentPosition()函数有一个可选的第三个参数,一个PositionOptions对象。您可以在PositionOptions对象中设置三个属性。所有属性都是可选的。您可以设置任何或全部或不设置它们。
http://diveintohtml5.info/geolocation.html
所以,它应该像这样工作:
POSITIONOPTIONS OBJECT
Property Type Default Notes
--------------------------------------------------------------
enableHighAccuracy Boolean false true might be slower
timeout long (no default) in milliseconds
maximumAge long 0 in milliseconds
注意到我在if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
var accuracy = position.coords.accuracy;
var coords = new google.maps.LatLng(latitude, longitude);
var mapOptions = {
zoom: 15,
center: coords,
mapTypeControl: true,
navigationControlOptions: {
style: google.maps.NavigationControlStyle.SMALL
},
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var capa = document.getElementById("capa");
capa.innerHTML = "latitude: " + latitude + ", longitude: " + ", accuracy: " + accuracy;
map = new google.maps.Map(document.getElementById("mapContainer"), mapOptions);
var marker = new google.maps.Marker({
position: coords,
map: map,
title: "ok"
});
},
function error(msg) {alert('Please enable your GPS position feature.');},
{maximumAge:10000, timeout:5000, enableHighAccuracy: true});
} else {
alert("Geolocation API is not supported in your browser.");
}
调用中添加了以下2个参数:
getCurrentPosition
无法检索GPS或触发超时时调用此功能。function error(msg){alert('Please enable your GPS position future.');}
这些是选项。我们不希望gps数据超过10秒({maximumAge:10000, timeout:5000, enableHighAccuracy: true});
)。我们不想等待超过5秒的响应(maximumAge:10000
),我们希望启用高精度(timeout:5000
)。另见:enableHighAccuracy: true
这是一个从Geolocation HTML5 enableHighAccuracy True , False or Best Option?取得的enableHighAccuracy: true
的简单例子。
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