有问题计算Wi-Fi强度

Question

我想获得设备Wi-Fi强度，但是

现在没有找到直接的方法来实现此操作，我已经有了它曾经在iOS 13之前工作的，但是现在我崩溃了。

func wifiStrength() -> Double {
    let app = UIApplication.shared
    let subviews = ((app.value(forKey: "statusBar") as! NSObject).value(forKey: "foregroundView") as! UIView).subviews
    var dataNetworkItemView: UIView?

    for subview in subviews {
        if subview.isKind(of: NSClassFromString("UIStatusBarDataNetworkItemView")!) {
            dataNetworkItemView = subview
            break
        }
    }

    let dBm = (dataNetworkItemView!.value(forKey: "wifiStrengthRaw") as! NSNumber).intValue
    var strength = (Double(dBm) + 90.0) / 60.0
    if strength > 1 {
        strength = 1
    }
    return strength
}

崩溃错误消息。

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'App called -statusBar or -statusBarWindow on UIApplication: this code must be changed as there's no longer a status bar or status bar window. Use the statusBarManager object on the window scene instead.'

终止以未被发现的方式终止NSexception类型，

有人知道如何适应iOS 13上的先前方法吗？ 或一种不同的方式来收集Wi-Fi信号强度。

Answer 1

无法在iOS应用程序上获得WiFi强度。请在Apple开发人员论坛中查看此线程：

一般应用没有支持在iOS上获得Wi-Fi信号强度的支持

使用value（forkey：）< / code>不支持，不稳定，并且可以将您的应用程序从应用程序中拒绝店铺。

Answer 2

我解决了问题，这是

    func wifiStrength() -> Double {

        let statusBarManager = UIApplication.shared

            .keyWindow?

            .windowScene?

            .statusBarManager

        let hascreateLocalStatusBar = statusBarManager?

            .responds(to: Selector("createLocalStatusBar"))

        if !(hascreateLocalStatusBar ?? false) {

            return -1

        }
        guard let createLocalStatusBar = statusBarManager?

            .perform(Selector("createLocalStatusBar"))

            .takeUnretainedValue() as?

            UIView else { print("not UIVirw"); return -1};
        let hasStatusBar = createLocalStatusBar.responds(to:  Selector("statusBar"))

        if !hasStatusBar {

            return -1

        }
        let statusBar = (createLocalStatusBar.perform(Selector("statusBar"))

            .takeUnretainedValue() as! UIView)
        guard let value = (((statusBar.value(forKey: "_statusBar") as? NSObject)?

            .value(forKey: "_currentAggregatedData") as? NSObject)?

            .value(forKey: "_wifiEntry") as? NSObject)?

            .value(forKey: "_rawValue") else { return -1}
        print("