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我在哪个视图控制器委托方法中请求API？

[英]In which view controller delegate method do i request the api.?

原文 2015-09-12 04:33:34 9 1 ios/ cocoa-touch

I have been developing a weather application in iOS 8 . 我一直在开发iOS 8中的天气应用程序。 I need to display the parsed JSON when the view displays. 显示视图时，我需要显示已解析的JSON。 I am not sure in which delegate methods do i need to request the api. 我不确定我需要在哪些委托方法中请求api。 i know it should be requested in the background thread. 我知道应该在后台线程中请求它。 which are the delegate methods run on background thread? 在后台线程上运行哪些委托方法？

1 个解决方案

you can call your api in every where! 您可以在任何地方调用您的api！ for example call in : AppDelegate or in initialize viewController . 例如在AppDelegate中或在初始化viewController中调用 。

but remember : your request is async so if the request going to fail or getting timed out you should handle it or notify toy first View Controller. 但请记住：您的请求是异步的，因此如果请求失败或超时，则应处理该请求或先通知玩具View Controller。

如何使用委托来指示哪个视图控制器行为与初始视图控制器相同？ - How do I use the delegate to dictate which view controller behaves as the initial view controller?

如果我有两个实现协议的视图控制器，如何指定我的第三个控制器的委托者？ - If I have two view controllers that implements a protocol, how do I specify which my is the delegate for my third controller?

如何从 App Delegate 切换到不同的视图 controller？ - How do I switch to a different view controller from the App Delegate?

如何从应用程序委托打开视图 controller？ - How do I open a view controller from the app delegate?

UIAlertview 委托方法不在子视图控制器中调用 - UIAlertview Delegate Method not calling in Child View Controller

从视图控制器调用应用程序委托方法 - Call app delegate method from view controller

目标视图控制器上的简单委托方法或属性 - Simple delegate method or property on destination view controller

目标C-视图控制器中的调用方法，该方法已位于应用程序委托的导航顶部 - Objective C - Call method in a view controller which is already in top of navigation from app delegate

在表视图委托方法中发出异步请求 - Make async request in table view delegate method

如何从场景委托中调用 function，该委托在视图 controller 中下载 URL？ - How can I call a function from scene delegate which downloads an URL in a view controller?

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相关问题 如何使用委托来指示哪个视图控制器行为与初始视图控制器相同？ - How do I use the delegate to dictate which view controller behaves as the initial view controller? 如果我有两个实现协议的视图控制器，如何指定我的第三个控制器的委托者？ - If I have two view controllers that implements a protocol, how do I specify which my is the delegate for my third controller? 如何从 App Delegate 切换到不同的视图 controller？ - How do I switch to a different view controller from the App Delegate? 如何从应用程序委托打开视图 controller？ - How do I open a view controller from the app delegate? UIAlertview 委托方法不在子视图控制器中调用 - UIAlertview Delegate Method not calling in Child View Controller 从视图控制器调用应用程序委托方法 - Call app delegate method from view controller 目标视图控制器上的简单委托方法或属性 - Simple delegate method or property on destination view controller 目标C-视图控制器中的调用方法，该方法已位于应用程序委托的导航顶部 - Objective C - Call method in a view controller which is already in top of navigation from app delegate 在表视图委托方法中发出异步请求 - Make async request in table view delegate method 如何从场景委托中调用 function，该委托在视图 controller 中下载 URL？ - How can I call a function from scene delegate which downloads an URL in a view controller?

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