ios - 将UITextDelegate类型的ViewController作为参数传递

我在Util.m中有一个静态函数

+ (UIView *) getBackButtonAsSubViewForNavigationBar:(UIViewController *)targetView :(SEL)targetAction {

       ...
       [button addTarget:targetView action:targetAction ...];

}

在MyViewController : UIViewController < UITextFieldDelegate >内，我尝试将其用作

UIView * backBtn = [Util getBackButtonAsSubViewForNavigationBar:self targetAction:@selector(cancelOp)]

但是Xcode说：


  选择器方法的不知道类
  'getBackButtonAsSubViewForNavigationBar：targetAction：'


我想念什么？

Util.h


+ (UIView *) getBackButtonAsSubViewForNavigationBar:(UIViewController *)targetView :(SEL)targetAction;


Util.m

+ (UIView *) getBackButtonAsSubViewForNavigationBar:(UIViewController *)targetView :(SEL)targetAction {

       ...
       [button addTarget:targetView action:targetAction ...];

}

cancelOp如下：

- (IBAction)cancelOp:(id)sender {
    [self dismissViewControllerAnimated:YES completion:Nil];
}

最佳答案

您应将方法声明/定义为：

Util.h


+ (UIView *) getBackButtonAsSubViewForNavigationBar:(UIViewController *)targetView target:(SEL)targetAction;


Util.m

+ (UIView *) getBackButtonAsSubViewForNavigationBar:(UIViewController *)targetView target:(SEL)targetAction {

       ...
       [button addTarget:targetView action:targetAction ...];

}

关于ios - 将UITextDelegate类型的ViewController作为参数传递，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25322243/