我正在使用钛创建一个适用于 Android 和 iOS 的应用程序，只要服务器运行，它就会每 5 秒向服务器发送一个新的地理位置。然而，在 iOS 上，应用程序会在随机间隔后停止发送这些位置。虽然我自己并不完全相信这是由于应用程序在 iOS 中暂停（因为它是随机停止而不是在固定时间停止），但我仍然渴望尝试并确定。
然而; 我真的不知道怎么做。我在 eventListener 中创建了一个后台服务来查看会发生什么，它会立即开始记录（我现在已经在其中放置了一个控制台日志）。尽管如此，我的地理位置仍然正常。
现在，有人可以给我一些关于如何度过难关的指示吗？我想停止我的正常地理定位侦听器并让 BG 服务接管吗？或者 BGservice 现在是否使我的正常代码中的地理位置事件监听器保持活动状态？
在这一点上，我不敢说我非常渴望得到任何帮助，哈哈！
这是我现在的地理位置处理以及 BGservice：
//Start button. listens to an eventHandler in location.js
btnStart.addEventListener('click', function (e) {
if( Titanium.Geolocation.locationServicesEnabled === false ) {
GPSSaved.text = 'Your device has GPS turned off. Please turn it on.';
} else {
if (Titanium.Network.online) {
GPSSaved.text = "GPS zoeken...";
//Empty interval and text to make a clean (re)start
clearInterval(interval);
//Set a half second timer on the stop button appearing(So people can't double tap the buttons)
stopTimeout = setTimeout(showStopButton, 1000);
//Switch the textlabels and buttons from startview to stopview
stopText.show();
startText.hide();
btnStart.hide();
//Locationhandler
location.start({
action: function (e) {
//Ti.API.info(e.coords.longitude);
if (e.coords) {
//If the newly acquired location is not the same as the last acquired it is allowed
if (e.coords.longitude != lastLon && e.coords.latitude != lastLat) {
//set the last acquired locations+other info to their variables so they can be checked(and used)
lastLat = e.coords.latitude;
lastLon = e.coords.longitude;
lastKnownAltitude = e.coords.altitude;
lastKnownHeading = e.coords.heading;
lastKnownSpeed = e.coords.speed;
if (lastLat != 0 && lastLon != 0) {
setGPSholder(lastLat, lastLon, lastKnownAltitude, lastKnownHeading, lastKnownSpeed);
} else {
GPSSaved.text = 'Geen coordinaten.';
}
}
}
}
});
/*
A second interval which shows a counter to the user and makes sure a location is sent
roughly every 5 seconds(setInterval isn't accurate though)
A lot of counters are tracked for several reasons:
minuteInterval: Counter which makes sure the last location is sent after a minute if no new one is found in the meantime
secondsLastSent: The visual counter showing the user how long its been for the last save(Is reset to 0 after a succesful save)
*/
interval = setInterval(function () {
minuteInterval++;
minuteIntervalTest++;
secondsLastSent++;
counterBlock.text = "De laatste locatie is " + secondsLastSent + " seconden geleden verstuurd";
//If the counter is higher than 5 send a new coordinate. If at the same time the minuteInterval is over a minute
//The last location is put in the array before calling the sendCoordinates
if (counter >= 5) {
if (minuteInterval > 60) {
if (lastLat != 0 && lastLon != 0) {
setGPSholder(lastLat, lastLon, lastKnownAltitude, lastKnownHeading, lastKnownSpeed);
}
}
counter = 0;
sendCoordinates();
Ti.API.info(1);
} else {
counter++;
}
if (minuteIntervalTest > 60) {
sendTestRequest();
}
}, 1000);
if (Titanium.Platform.osname == 'iphone' || Titanium.Platform.osname == 'ipad') {
//var service = Ti.App.iOS.registerBackgroundService({url:'send_geolocation_service.js'});
var service;
// Ti.App.iOS.addEventListener('notification',function(e){
// You can use this event to pick up the info of the noticiation.
// Also to collect the 'userInfo' property data if any was set
// Ti.API.info("local notification received: "+JSON.stringify(e));
// });
// fired when an app resumes from suspension
Ti.App.addEventListener('resume',function(e){
Ti.API.info("app is resuming from the background");
});
Ti.App.addEventListener('resumed',function(e){
Ti.API.info("app has resumed from the background");
// this will unregister the service if the user just opened the app
// is: not via the notification 'OK' button..
if(service!=null){
service.stop();
service.unregister();
}
Titanium.UI.iPhone.appBadge = null;
});
Ti.App.addEventListener('pause',function(e){
Ti.API.info("app was paused from the foreground");
service = Ti.App.iOS.registerBackgroundService({url:'send_geolocation_service.js'});
Ti.API.info("registered background service = "+service);
});
}
} else {
stopGPS();
GPSSaved.text = "Geen internetverbinding.";
}
}
});
如您所见，有一些计数器在一定间隔内运行，以决定是否应每 5 秒或每分钟发送一次地理位置（如果自上次发现后没有新位置）
tl; dr：我希望每 5 秒发送一次地理位置，但不知何故 iOS（iPhone 4s 和 5 测试）在随机时间段后停止发送，并在我让手机脱离待机状态时重新开始发送。