如何获得用户位置，通过GPS在煎茶 [英] How to get user position by GPS in Sencha

问题描述

我试图让在煎茶触摸2用户的位置是：

I'm trying to get user position in Sencha Touch 2:

var geo = new Ext.util.Geolocation({
        autoUpdate: true,
        allowHighAccuracy: true,
        listeners: {
            locationupdate: function(geo) {
                lat = geo.getLatitude();
                lon = geo.getLongitude();

                // here comes processing the coordinates   
            }
        }
    });

但我只能从网络中得到了坐标。有一个关于Android设备没有GPS图标，指向我使用GPS。另外，当我关闭网络连接不能正常工作。如何启用GPS定位？在清单文件GPS功能。

But I've got coordinates only from network. There's no GPS icon on Android device, pointing that I'm using GPS. Also it doesn't work when I turn off internet connection. How can I enable GPS positioning? In Manifest file GPS is enabled.

推荐答案

我这个刚刚有点太。

原来有一个在煎茶中的错误：在的 Ext.util.Geolocation.parseOption 他们命名参数 allowHighAccuracy 不过的 命名的W3C规范 enableHighAccuracy 。 我增加了以下code到我的应用程序初始化来解决这个问题：

It turns out there's a bug in Sencha: in Ext.util.Geolocation.parseOption they name the parameter allowHighAccuracy but the w3c specs name it enableHighAccuracy. I added the following code to my application init to fix that:

var parseOptions = function() {
    var timeout = this.getTimeout(),
        ret = {
            maximumAge: this.getMaximumAge(),
            // Originally spells *allowHighAccurancy*
            enableHighAccuracy: this.getAllowHighAccuracy()
        };

    //Google doesn't like Infinity
    if (timeout !== Infinity) {
        ret.timeout = timeout;
    }
    return ret;
};
Ext.util.Geolocation.override('parseOptions', parseOptions);

有关记录：错误<一href="http://www.sencha.com/forum/showthread.php?130292-OPEN-TOUCH-137-enableHighAccuracy-allowHighAccuracy-in-GeoLocation"相对=nofollow>据报道在一年前和的修复程序适用于TOUCH-2804在最近的版本。我不知道这意味着什么，但肯定不够的缺陷仍处于2.0

For the record: the bug has been reported over a year ago, and the fix was applied for TOUCH-2804 in a recent build. I don't know what that means, but sure enough the bug is still in 2.0

编辑：用上述方法不能很好地工作无论是。该GPS图标会打开和关闭的EXTS反复使用的setInterval调用getCurrentPosition。这样做的原因在于，本机watchPosition方法的iOS5 正在打破。在我的Andr​​oid应用程序的目标我最终抛弃分机：util.Geolocation和directely使用navigator.geolocation.watchPosition。之后，它的工作就像一个魅力。

using the approach mentioned above doesn't work well either. The GPS icon would turn on and off as Exts calls getCurrentPosition repeatedly using a setInterval. The reason for doing this is that The native watchPosition method is currently broken in iOS5. In my Android targeted application I ended up ditching Ext:util.Geolocation and directely used navigator.geolocation.watchPosition. After that it worked like a charm.

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