ios - 类中定义的方法无法识别

Question

我刚刚开始学习 ObjectiveC、iOS 和 Xcode。我正在关注斯坦福大学教程。我有以下类，我在 PsychloggerViewController's 实现中定义了一个名为 setAndShowDiagnosis:(int)diagnosis 的方法。当我调用此方法时，Xcode 会说以下内容:

/Users/matthewwomersley/Documents/developer/Psychlogger/Psychlogger/PsychloggerViewController.m:50:11:在“PsychloggerViewController *”类型的对象上找不到属性“setAndShowDiagnosis”

有什么想法吗？很抱歉提出一个基本问题，但我是 MVC 等方面的新手

//
//  PsychologistViewController.m
//  Psychologist
//
//  Created by matthew womersley on 25/09/2014.
//  Copyright (c) 2014 com.carefreegroup. All rights reserved.
//

#import "PsychologistViewController.h"
#import "HappinessViewController.h"

@interface PsychologistViewController ()
@property (nonatomic) int diagnosis;
@end






@implementation PsychologistViewController

@synthesize diagnosis = _diagnosis;



- (void)setAndShowDiagnosis:(int)diagnosis{

    self.diagnosis = diagnosis;
    [self performSegueWithIdentifier:@"ShowDiagnosis" sender:self];

}



-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{


    if([segue.identifier isEqualToString:@"ShowDiagnosis"]){

        [segue.destinationViewController setHappiness:self.diagnosis];
    }

}



- (IBAction)flying {

    [self.setAndShowDiagnosis:85];
}



- (IBAction)apple {

    [self.setAndShowDiagnosis:100];

}


- (IBAction)dragons {

    [self.setAndShowDiagnosis:20];

}


@end

Answer 1

[self setAndShowDiagnosis:20];

您可以这样调用该函数。您的代码正在尝试访问 self 的属性

[self.setAndShowDiagnosis:20];