代码之家 › 专栏 › 技术社区 › AtulParmar

Swift IOS:从通知打开应用程序时调用UIviewController的特定功能

nsnotificationcenter apple-push-notifications push-notification swift ios

0

AtulParmar · 技术社区 · 6 年前

onDidReceiveNotification 在应用程序打开时使用轻触通知功能。( ViewController 是第一个视图控制器,根视图控制器)

当应用程序打开或在后台运行时,它可以正常工作,但当应用程序未打开或在后台运行时(不在内存中),请点击此处打开应用程序 接收通知 函数不是call,

接收通知 使用点击推送通知打开应用程序时的功能

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        NotificationCenter.default.removeObserver(self, name: .didReceiveAlert, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(ViewController.onDidReceiveNotification(_:)), name: .didReceiveAlert, object: nil)
    }

@objc func onDidReceiveNotification(_ notification:Notification) {
        print("Received Notification")
    }
}

AppDelegate.swift批准

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {            
    NotificationCenter.default.post(name: .didReceiveAlert, object: nil)       
}

1 回复 | 直到 6 年前

1

AtulParmar 6 年前

当应用程序打开或在后台时调用 NotificationCenter.defalut.post 当应用程序终止/关闭并使用通知打开时,获取实例并通过菜单调用 onDidReceiveAlert

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

    if application.applicationState == .background || application.applicationState == .active {
        NotificationCenter.default.post(name: .didReceiveAlert, object: nil)
    }else {
        let nav = window?.rootViewController as! UINavigationController
        let mainVC = nav.viewControllers.first as! ViewController
        mainVC.onDidReceiveAlert(nil)
    }
}

或者直接得到 ViewController 实例来自 UINavigationController 视图控制器 (不需要通知观察员)

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

    let nav = window?.rootViewController as! UINavigationController
    let mainVC = nav.viewControllers.first as! ViewController
    mainVC.onDidReceiveAlert(nil)       
}

@objc func onDidReceiveAlert(_ notification:Notification? = nil) {
    print("Received Notification")
}

2

0

Akhilrajtr 6 年前

尝试下面的代码

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    if let remoteNotif = launchOptions?[UIApplicationLaunchOptionsKey.remoteNotification] as? [String: Any] {
         //call your notification method from here
         NotificationCenter.default.post(name: .didReceiveAlert, object: nil)  
    }
}

希望你只需要打电话给 didReceiveAlert 任何情况下的通知

3

0

Yogesh Tandel 6 年前

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
    // Print full message.
    print(userInfo)
    pushToPage(data: userInfo)
}

func pushToPage(data:[AnyHashable : Any]){
    print("Push notification received: \(data)")
    if let aps = data["aps"] as? NSDictionary {
        print(aps)
    }
}

4

0

Nilesh R Patel 6 年前

当应用程序处于非活动状态并且用户点击通知时。在这种情况下,只有一个选项来管理通知。

试试这个

前任在中创建变量

var isNotificationTap : Bool = false

在那张支票之后 launchOptions 如果可用然后设置标志

if launchOptions != nil {
    if let userInfo = launchOptions?[UIApplication.LaunchOptionsKey.remoteNotification] as? [String : AnyObject] {
        if let dic = userInfo["body"] as? [String : AnyObject] {
            if let pushType = dic["push_type"] as? String {
                //Set Flag or any key in global file to identify that you tap on notification
                self.isNotifcaionTap = true
            }
        }
    }
}

然后简单地在ViewController中检查一个标志。

class ViewController : UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        if self.isNotificationTap {

            print("Received Notification")
            //You can work with your notificaiton in inActive state
        }
    }

}

5

-1

Arul Murugan Sivapoosam 6 年前

if let rootController = UIApplication.shared.keyWindow?.rootViewController{
        let controllerInstance = rootController.navigationController?.viewControllers[yourControllerIndex] as? ViewController
        controllerInstance.onDidReceiveNotification()
 }