如何更改应用程序委托类? [英] How to change the Application Delegate class?

问题描述

在每个iOS应用程序中都有一个App Delegate类，这意味着应用程序中的一个类必须实现应用程序事件的委托方法，例如 didFinishLaunching:等.通常，类名包含"AppDelegate".

In every iOS app there is an App Delegate class, meaning one of the classes in the app has to implement the delegate methods for the application events such as didFinishLaunching: and so forth. Usually the class name contains "AppDelegate".

App Delegate类是iOS上 UIApplicationDelegate 或Mac上 NSApplicationDelegate 的子类.

The App Delegate class is a subclass of UIApplicationDelegate on iOS or NSApplicationDelegate on the Mac.

class AppDelegate: UIApplicationDelegate {

}

比方说，我想在与为我创建和命名的原始Xcode不同的类中实现App Delegate方法.我该怎么办?

Let's say I want to implement the App Delegate methods in a different class than the original one Xcode created and named for me. How can I do that?

推荐答案

您可以通过修改 main.m 中存在的 UIApplicationMain 函数的参数来进行相同的操作文件:

You can do the same by modifying the parameters to the UIApplicationMain function present in the main.m file:

UIApplicationMain(argc,argv,nil,nil);

最后一个参数采用实现 UIApplicationDelegate 协议的类的名称.

The last parameter takes the name of the class which is implementing the UIApplicationDelegate protocol.

因此，默认实现如下所示:

So the default implementation looks something like:

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain(argc, argv, nil, nil);
[pool release];
return retVal;

修改后，将类似于:

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain(argc, argv, nil, NSStringFromClass([< Your class name will go here > class]));
[pool release];
return retVal;

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