Phonegap，Cordova监视位置每1秒发射一次成功 [英] Phonegap, Cordova watchposition fire success every 1 second

问题描述

平台：iOS6 / OSx Lion。

Platform: iOS6/OSx Lion.

我想弄清楚Phonegap / Cordova与 navigator.geolocation.watchPosition的工作方式。

I'm trying to puzzle out the way Phonegap/Cordova work with navigator.geolocation.watchPosition.

文档说，选项 maximumAge 是要求

因此，使用以下选项：

{ maximumAge: 3000, timeout: 5000, enableHighAccuracy: true }

我认为该职位请求将会每3秒钟触发一次？

I espect the position request will be fired every 3 seconds?

无论我把什么 maximumAge 都每1秒触发一次...

And no matter what maximumAge I put the success is fired every 1 second...

任何人都可以解释一下吗？

Anyone can explain please?

感谢再见

抢劫

Thanks Bye
Rob

推荐答案

我目前正在通过将 getCurrentPosition 与 setInterval 。我不确定会带来什么后果，但这似乎使我拥有最大的控制权，并且似乎是跨平台的最一致的方法。

I am currently working around this issue by using getCurrentPosition with a setInterval. I'm not sure what the consequences may be, but this seems to give me the most control and appears to be the most consistent method across platforms.

// call this once
setupWatch(3000);

// sets up the interval at the specified frequency
function setupWatch(freq) {
    // global var here so it can be cleared on logout (or whenever).
    activeWatch = setInterval(watchLocation, freq);
}

// this is what gets called on the interval.
function watchLocation() {
    var gcp = navigator.geolocation.getCurrentPosition(
            updateUserLoc, onLocationError, {
                enableHighAccuracy: true
            });


    // console.log(gcp);

}

// do something with the results

function updateUserLoc(position) {


var location = {
    lat : position.coords.latitude,
    lng : position.coords.longitude
};

console.log(location.lat);
console.log(location.lng);
}

// stop watching

function logout() {
    clearInterval(activeWatch);
}

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