终止应用程序swift 2后发送本地通知 [英] Send local notification after termination app swift 2

问题描述

在应用程序状态进入终止/未运行状态的某个特定时间后，是否可以执行某些特定任务。

Is is possible to perform some specific task after some specific time when app state goes to terminate/not running state.

func applicationDidEnterBackground(application: UIApplication) {
    print("APP in background state") // Working fine
    NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "backService", userInfo: nil, repeats: true)

}

但当app状态进入终止状态时它不起作用？

But when app state goes to terminate state then its not working?

func applicationWillTerminate(application: UIApplication) {
     NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "backService", userInfo: nil, repeats: true)
}

我也是尝试

func applicationWillTerminate(application: UIApplication) {

    let application = UIApplication.sharedApplication()
    self.applicationDidEnterBackground(application)
    application.beginBackgroundTaskWithExpirationHandler { 
                    NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "backService", userInfo: nil, repeats: true)
    }

}

推荐答案

您实际上并未安排通知......当您创建本地的新通知，可以在 applicationWillTerminate 方法中完成，有一个名为 fireDate 的属性，您可以将其设置为通知随时发送。

You're not actually scheduling a notification... When you create a new notification locally, which can be done in the applicationWillTerminate method, there's a property called fireDate which you can set to have the notification get sent whenever you want to.

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