Question

我的问题与此处的问题基本相同：
iOS Geofence, how to handle when inside region when monitoring starts?

我需要一个Swift 3解决方案。

我正在使用关于Geofencing的优秀raywenderlich教程，它在我的项目中工作，几乎没有自定义。我的应用程序在穿越地理围栏边界时会做出完美的响应。

但我需要在app启动时确定用户是否已经在地理围栏内。

我假设我需要使用

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
...   //  There's some other stuff
   locationManager.delegate = self
   locationManager.requestAlwaysAuthorization()        
   loadAllGeotifications()  //  There will be only one !!
   let homeRegion = region(withGeotification: geotifications[1]) as! CLRegion
    locationManager.requestState(for: homeRegion)
    return true
}

func loadAllGeotifications() {
    geotifications = []
    guard let savedItems = UserDefaults.standard.array(forKey: PreferencesKeys.savedItems) else { return }
    for savedItem in savedItems {
        guard let geotification = NSKeyedUnarchiver.unarchiveObject(with: savedItem as! Data) as? Geotification else { continue }
            geotifications.append(geotification)
    }
}


func region(withGeotification geotification: Geotification) -> CLCircularRegion {
    let region = CLCircularRegion(center: geotification.coordinate, radius: geotification.radius, identifier: geotification.identifier)
    return region
   }
}

func locationManager(manager: CLLocationManager, didDetermineState state: CLRegionState, forRegion region: CLRegion) {
    let defaults: UserDefaults = UserDefaults.standard
    switch state {
    case .inside:
        defaults.set(true, forKey: "atHome")
    case .outside:
        defaults.set(false, forKey: "atHome")
    default:
        defaults.set(true, forKey: "atHome")   //  Assume user is at home unless/until determined otherwise
    }
}

在我的appDelegate中。

我缺少的是如何将我的地理围栏区域加载为CLRegion，以便我可以在启动时使用它来调用该函数。

这是我尝试过的不起作用的东西。

                   //Iterates through all Posting Opjects
                    XPathNodeIterator loopIter = payload.getXpathList("//FolioInfo/Postings[NetAmount>10]");

                    foreach (XPathNavigator val in loopIter)
                    {

                        string xPathLookup = "//TrxInfo[Code=TrxCode]/Description"  //Returns no result
                        //string xPathLookup = "//TrxInfo[Code=1]/Description"  //Returns "Desc 2"
                        //string xPathLookup = "NetAmount"    //Works Correctly

                        XPathExpression rgxLookup = XPathExpression.Compile(xPathLookup);
                        XmlNamespaceManager manager = new XmlNamespaceManager(val.NameTable);
                        rgxLookup.SetContext(manager);

                        string tmpText = val.Evaluate(rgxLookup);  //Simplified - Changes depending on ReturnType

                        //Do stuff
                    }

didDetermineState永远不会回来。同样的问题是CLCircularRegion是否重新改写为CLRegion - 没有区别。

Answer 1

我解决了！

这里有替代代码：

func locationManager(_ manager: CLLocationManager, didDetermineState state: CLRegionState, for region: CLRegion) {
... }

注意添加＆＃34; _＆＃34;在＆＃34;经理＆＃34;。

我的＆＃34; atHome＆＃34;现在，当应用程序启动时，旗帜已正确设置。

重新制作ULRegion是可以的，但没有必要。

let homeRegion = region(withGeotification: geotifications[1])

......工作正常

iOS Geofence在监控开始时如何处理内部区域

1 个答案: