如何知道BlackBerry设备是否有GPS？

Question

我想知道设备是否有GPS，我怎么能为v 5.0以下的设备做到这一点？

Answer 1

查看Location Provider的文档。在不同情况下的几台设备上试用这段代码，我认为它应该可行：

try {
    LocationProvider lp = LocationProvider.getInstance(null);
    if (lp == null) {
        //Device doesn't currently have GPS enabled
    } else {
        //Device has GPS enabled
    }
} catch (LocationException le) {
     //Device's GPS is currently permanently disabled
}

Answer 2

你必须check if Java ME's JSR 179 is available。