IOS/Objective-C：无法将用户输入与 Array(index) 匹配

Question

我正在学习IOS/Objective-C，我让这个用户输入Quizz项目;目前我可以显示所有问题和答案（带有按钮和标签）。但至于下一步 - 用户输入答案并获得正确或错误 - 缺少一些东西;我似乎无法将用户的输入与索引相匹配。如果我写东西，输出总是"错误"。代码：

#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

我想我需要指向索引，但我尝试了不同的方式，但它不起作用......感谢您的帮助

Answer 1

答案，在Larme的帮助下：

- (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;
    }

}

必须使用"isEqualToString"方法进行比较