iPhone - 如何保存每个视图控制器？
当我的应用程序的“applicationWillTerminate”函数在应用程序的委托文件中被调用时，我需要循环遍历选项卡控制器的每个子控制器并保存其当前状态。是否可以循环遍历每个 viewController 调用自定义保存函数？
When my app's “applicationWillTerminate” function is called in the app’s delegate file I need to loop through each child controller of a tab controller and save the current state it is in. Is it possible to loop through each viewController calling a custom save function?
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获取
tabBarController.viewControllers并将makeObjectsPerformSelector:@selector(yourCustomSaveMethod)消息发送到该数组。Get the
tabBarController.viewControllersand send themakeObjectsPerformSelector:@selector(yourCustomSaveMethod)message to that array.查看
UIApplicationWillTerminateNotification和UIApplicationDidEnterBackgroundNotification。比循环视图控制器要好得多。Have a look at
UIApplicationWillTerminateNotificationandUIApplicationDidEnterBackgroundNotification. Much nicer than looping through your view controllers.