Swift - 擷取狀態列一些資訊

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//  擷取狀態列的各種資訊 ：網路類型，電訊廠商，電池電量，顯示的系統時間等資訊import UIKitenum NetWorkType {    case NetworkStatesNone // 沒有網路    case NetworkStates2G // 2G    case NetworkStates3G // 3G    case NetworkStates4G // 4G    case NetworkStatesWIFI // WIFI}class StatusBarInfo: NSObject {    // 擷取電訊廠商 名稱    class func serviceCompany() -> String {        let array :NSArray = (UIApplication.sharedApplication().valueForKeyPath("statusBar")?.valueForKeyPath("foregroundView")?.subviews)!        for info in array {            if info.isKindOfClass(NSClassFromString("UIStatusBarServiceItemView")!) {                let serverStr:String = info.valueForKeyPath("serviceString") as! String                return serverStr            }        }        return ""    }    // 顯示系統時間    class func currentTimeString() -> String {        let array :NSArray = (UIApplication.sharedApplication().valueForKeyPath("statusBar")?.valueForKeyPath("foregroundView")?.subviews)!        for info in array {            if info.isKindOfClass(NSClassFromString("UIStatusBarTimeItemView")!) {                let timeStr:String = info.valueForKeyPath("timeString") as! String                return timeStr            }        }        return ""    }    // 檢測網路狀態    class func currentNetworkType() -> NetWorkType {        let array :NSArray = (UIApplication.sharedApplication().valueForKeyPath("statusBar")?.valueForKeyPath("foregroundView")?.subviews)!        var states :NetWorkType = .NetworkStatesNone        for info in array {            if info.isKindOfClass(NSClassFromString("UIStatusBarDataNetworkItemView")!) {                let networkType = info.valueForKeyPath("dataNetworkType")!.integerValue                switch (networkType) {                case 0:                    states = .NetworkStatesNone;                    //無網模式                    break;                case 1:                    states = .NetworkStates2G;                    break;                case 2:                    states = .NetworkStates3G;                    break;                case 3:                    states = .NetworkStates4G;                    break;                case 5:                    states = .NetworkStatesWIFI;                    break;                default:                    break;                }            }        }        return states    }    // 擷取當前的電量資訊    class func currentBatteryPercent() -> String {        let array :NSArray = (UIApplication.sharedApplication().valueForKeyPath("statusBar")?.valueForKeyPath("foregroundView")?.subviews)!        for info in array {            if info.isKindOfClass(NSClassFromString("UIStatusBarBatteryPercentItemView")!) {                let presentStr:String = info.valueForKeyPath("percentString") as! String                return presentStr            }        }        return ""    }}

Swift - 擷取狀態列一些資訊