ios - 委托(delegate)未调用协议(protocol)方法

我已经在我的应用中实现了协议，

我已经在loginViewController中声明了协议方法，并且正在从protocolMethod调用confirmViewController

这是我的代码段：
loginViewController.h

@protocol FirstControllerDelegate<NSObject>
@required
-(void)protocolMethod;

@end

@interface loginViewController : UIViewController<FirstControllerDelegate>

@end

loginViewController.m

- (IBAction)loginBtnClicked:(id)sender {
    confirmViewController *obj = [confirmViewController new];
     obj.delegate=self;
   [self performSegueWithIdentifier:@"confirmloginsegue" sender:self];


}

-(void)protocolMethod{
    NSLog(@"--- This is not callled ---");
     [self dismissViewControllerAnimated:NO completion:nil];
}

代码为
confirmViewController.h

@interface confirmViewController : UIViewController

@property (nonatomic, assign) id <FirstControllerDelegate> delegate;

@end

confirmViewController.m

 (IBAction)continueClicked:(id)sender {

    [_delegate protocolMethod]; //Calling protocol method...
    [self dismissViewControllerAnimated:YES completion:nil];
}

我在哪里做错了？

请帮助并提前致谢！

最佳答案

错误的方法和委托初始化

在这行中：

confirmViewController *obj = [confirmViewController new];
     obj.delegate=self;
   [self performSegueWithIdentifier:@"confirmloginsegue" sender:self];

--- You are loosing the object here

解

在属性检查器中，为该ConfirmViewController提供标识符，现在按下vc并设置对象ConfirmViewController的委托，如下所示：-

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
ConfirmViewController *confirmViewController = [storyboard instantiateViewControllerWithIdentifier:@"ConfirmViewController"];

confirmViewController.delegate=self;

[self.navigationController pushViewController:confirmViewController animated:YES];

关于ios - 委托(delegate)未调用协议(protocol)方法，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/36710281/