HTML5离线模式和地理位置 [英] HTML5 offline mode and geolocation

问题描述

在HTML5中处于离线模式时，仍有可能使用地理位置功能吗？看起来，当我在线（navigator.onLine = true）时，地理定位工作正常。但是当我离线时（navigator.onLine = false），我得到了我的错误回调，并且错误表明地理定位不可用。

Is it possible to still use the geolocation features when you are in offline mode in HTML5? It appears that when I am online (navigator.onLine = true), the geolocation works fine. But when I go offline (navigator.onLine = false), I get thrown to my error callback and the error indicates geolocation not available.

推荐答案

这取决于该特定浏览器中的GeoLocation如何连接。在Firefox中，GeoLocation取决于 Google定位服务通过向网络服务发送一些网络信息起作用 - 显然这在您离线时无法使用，因为网络服务不可用。

It's going to depend on how the GeoLocation in that particular browser is wired up. In Firefox, GeoLocation depends on Google Location Services which works by sending some network information to a web service - obviously this is not going to work when you're offline as the web service will not be available.

如果您有一个直接与GPS硬件进行通信的浏览器，那么它将脱机工作，但我认为您不会发现任何具有此类集成的桌面浏览器 - 可能是一些移动设备会的。

If you had a browser which communicated directly with GPS hardware then it would work offline, but I don't think you'll find any desktop browsers with that sort of integration - maybe some mobile ones will.

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