错误处理不适用于Chrome中的HTML5地理位置 [英] Error handling not working with HTML5 geolocation in Chrome
问题描述
我有一个简单的地图,只要允许HTML5地理位置定位,就应该以用户的位置为中心加载.如果他们不选择让我们看到他们的位置,则有一个适当的功能,但是由于某种原因,它不起作用.
I have a simple map that should load centered around the user's location as long as they allow HTML5 geolocation. There's a function in place incase they don't choose to allow us to see their location, but for some reason it doesn't work.
代码如下:
var x = document.getElementById("msg");
function getLocation() {
if (Modernizr.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition, showError);
}
else { x.innerHTML = "Geolocation is not supported by this browser."; }
}
function showPosition(position) {
var mapOptions = {
center: new google.maps.LatLng(position.coords.latitude, position.coords.longitude),
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("Map"), mapOptions);
var acOptions = {
types: ['establishment']
};
var autocomplete = new google.maps.places.Autocomplete(document.getElementById('autocomplete'), acOptions);
autocomplete.bindTo('bounds', map);
var infoWindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map
});
google.maps.event.addListener(autocomplete, 'place_changed', function () {
infoWindow.close();
var place = autocomplete.getPlace();
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17);
}
marker.setPosition(place.geometry.location);
infoWindow.setContent('<div><strong>' + place.name + '</strong><br />');
infoWindow.open(map, marker);
google.maps.event.addListener(marker, 'click', function (e) {
infoWindow.open(map, marker);
});
});
}
function showError(error) {
switch (error.code) {
case error.PERMISSION_DENIED:
x.innerHTML = "User denied the request for Geolocation."
break;
case error.POSITION_UNAVAILABLE:
x.innerHTML = "Location information is unavailable."
break;
case error.TIMEOUT:
x.innerHTML = "The request to get user location timed out."
break;
default:
x.innerHTML = "An unknown error occurred."
break;
}
}
google.maps.event.addDomListener(window, 'load', getLocation);
当然,主体中还有一个<p>
元素,其ID为msg.
And of course a <p>
element is in the body with an id of msg.
推荐答案
您可能会注意到它在FF中不会触发,因为他们认为不是现在"不是应该引发错误-请参阅此处(最后的响应是停止重新打开此错误,这是设计使然"):
Your'e probably noticing it doesn't fire in FF, because they see the "not now" as not something that should fire an error - see here (last response says "stop reopening this bug, it's by design that we do it that way"):
https://bugzilla.mozilla.org/show_bug.cgi?id=635175
但是
超时是navigator.geolocation.getCurrentPosition
的options参数(可选的第三个参数)的可接受属性.因此,navigator.geolocation.getCurrentPosition(showPosition, showError, {timeout:8000});
是8秒钟的不活动"后到达showError
的方法-在Firefox中,这意味着没有明确回答是或从不回答".
Timeout is an acceptable property of the options argument (optional third argument) of navigator.geolocation.getCurrentPosition
. So navigator.geolocation.getCurrentPosition(showPosition, showError, {timeout:8000});
is the way to get to showError
after 8 seconds of "inactivity" - which in the case of firefox means "not answering explicitly yes or never".
PS-问与答:如果用户拒绝在Firefox中共享地理位置,功能永远不会失败
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