IOS/Objective-C：Array（index）への入力を一致させることができません

Question

私はIOS/Objective-Cを学習しています。私はすべての質問と回答（ボタンとラベル付き）を表示することができます。しかし、次のステップとしては、ユーザーが答えを入力して右か間違っているかが分かります。私は、インデックスへのユーザーの入力と一致するように思えません。私が何かを書くと、出力は常に "間違っています"。コード：

#import "QuizzViewController.h" 
#import "Question.h" 

@interface QuizzViewController() 

@property (weak, nonatomic) IBOutlet UILabel *questionLabel; 
@property (weak, nonatomic) IBOutlet UILabel *answerLabel; 

@property NSArray *questions; 
@property NSUInteger index; 

@property (weak, nonatomic) IBOutlet UILabel *answerValidation; 
@property (weak, nonatomic) IBOutlet UITextField *inputAction; 


@property (weak, nonatomic) IBOutlet UIButton *answerButton; 




@end 

@implementation QuizzViewController 

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    _questions = @[ 
        [Question question:@"Best surfer in the World?" answer:@"Kelly Slater"], 
        [Question question:@"Capital of England?" answer:@"London"], 
        [Question question:@"Capital of Argentina?" answer:@"Buenos Aires"] 
        ]; 

    _index = -1; 
    [self nextQuestionAction]; 
} 



- (IBAction)answerAction:(UIButton *)sender { 
    Question *question = [_questions objectAtIndex:_index]; 

    NSString *correct=@"Correct"; 
    NSString *wrong=@"Wrong"; 
    _inputAction.text=question.answer; 

    if (question.answer==_inputAction.text){ 
     _answerValidation.text=correct; 
    }else{ 
     _answerValidation.text=wrong; 

    } 


} 



/*- (IBAction)inputAction:(UITextField *)sender { 

    Question *question = [_questions objectAtIndex:_index]; 

    NSString *correct=@"Correct"; 
    NSString *wrong=@"Wrong"; 

    if (question.answer==_inputAction.text){ 
     _answerValidation.text=correct; 
    }else{ 
    _answerValidation.text=wrong; 

    } 



}*/ 


- (IBAction)nextQuestionAction { 
    _index = (_index + 1) % _questions.count; 
    Question *question = [_questions objectAtIndex:_index]; 

    _questionLabel.text = question.question; 
    _answerLabel.text = @"..."; 
} 

- (IBAction)showAnswerAction { 
    Question *question = [_questions objectAtIndex:_index]; 
    _answerLabel.text = question.answer; 
} 

@end 

私は、インデックスを指定する必要がありますが、私はさまざまな方法で試してみた、それはの助けを借りて、...助け

Answer 1

答えてくれてありがとう働いていないと思いますLarme： `：

- (IBAction)answerAction:(UIButton *)sender { 
    Question *question = [_questions objectAtIndex:_index]; 

    NSString *correct=@"Correct"; 
    NSString *wrong=@"Wrong"; 
    _inputAction.text=question.answer; 

    if ([question.answer isEqualToString:_inputAction.text]){ 

     _answerValidation.text=correct; 
    }else{ 
     _answerValidation.text=wrong; 

    } 


} 

comparinsonが "isEqualToString" 方法