将对象从VC传递到App Delegate [英] Pass object from VC to App Delegate

问题描述

我在VC中有一些对象，希望可以从我的应用程序委托中访问。

I have a few objects in a VC that I want to be accessible from my App Delegate.

我的VC启动另一个应用程序，该应用程序对我的应用程序进行回调。此回调会触发我的应用程序委托中的方法：

My VC launches another app, which does a callback to my app. This callback triggers a method in my App Delegate:

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url

但是我想使用在先前的VC中设置的此方法访问一些对象。有什么想法吗？

But I want to access some objects in this method that I had set in that previous VC. Any ideas how?

推荐答案

使用

+(id)sharedApplicationDelegate; in delegate.h, and write

+(id)sharedApplicationDelegate{
    return  [[UIApplication sharedApplication] delegate];
}

在委托人中。在.h中使对象数据类型可变，并设置其属性。
编写这样的方法：

In delegate.m. Make object data type variable in .h and set its property. Write a method like this:

-(void)setObjectForDelegate:(ObjectType *)value{
//use value obj or set it to other variable
}

使用方法：

#import "XXXXdelegate.h"
[[UIApplication sharedApplication] setObjectForDelegate:object];

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