Question

当我打开我的应用程序，进入后台并最终返回前台时，我的界面出现了一些问题。因此，当我从后台回来时，我想强制我的应用程序始终启动应用程序。我看到Clash Royale游戏就是这样运作的。我正在开发swift 3

Answer 1

我不确切知道您的主页在从后台返回后要加载的内容，但您应该能够使用AppDelegate中的函数来设置值并加载场景或视图从背景状态返回时需要，或者在应用程序关闭时能够设置所需视图。

以下是已经内置到AppDelegate中的函数列表。

func applicationWillResignActive(_ application: UIApplication) {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}

func applicationDidEnterBackground(_ application: UIApplication) {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

func applicationWillEnterForeground(_ application: UIApplication) {
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}

func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

func applicationWillTerminate(_ application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

从后台回来后强制启动App。斯威夫特3

1 个答案: