(Xcode/iOS Game) เกี่ยวกับคำสั่งในการ กดปุ่ม Button เพื่อที่จะให้โจทไปข้อถัดไป

@implementation Game
-(void)RightAnswer{

    ScoreNumber = ScoreNumber +1;
    Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];
    NextGames.hidden=NO;
    Answer1.hidden = YES;
    Answer2.hidden = YES;
    Answer3.hidden = YES;
    Answer4.hidden = YES;
    QuestionText.hidden = YES;
    CategorySelected.hidden =YES;
    Result.hidden = NO;
    Result.image = [UIImage imageNamed:@"right.png"];

}
-(void)WrongAnswer{
    
    LivesNumeber = LivesNumeber -1;
    Lives.text = [NSString stringWithFormat:@"%i", LivesNumeber];
    NextGames.hidden=NO;
    Answer1.hidden = YES;
    Answer2.hidden = YES;
    Answer3.hidden = YES;
    Answer4.hidden = YES;
    QuestionText.hidden = YES;
    CategorySelected.hidden =YES;
    Result.hidden = NO;
    Result.image = [UIImage imageNamed:@"wrong.png"];
    
    
    if (LivesNumeber == 0) {
        Result.image = [UIImage imageNamed:@"gameover.png"];
        NextGames.hidden = YES;
        Exit.hidden = NO;
        GameInProgress = NO;
    }
    
}



-(IBAction)Answer1:(id)sender{
    if (Answer1Correct == YES) {
        [self RightAnswer];
    }
    else{
        [self WrongAnswer];
    }
}
-(IBAction)Answer2:(id)sender{
    if (Answer2Correct == YES) {
        [self RightAnswer];
    }
    else{
        [self WrongAnswer];
    }
}
-(IBAction)Answer3:(id)sender{
    if (Answer3Correct == YES) {
        [self RightAnswer];
    }
    else{
        [self WrongAnswer];
    }
}
-(IBAction)Answer4:(id)sender{
    if (Answer4Correct == YES) {
        [self RightAnswer];
    }
    else{
        [self WrongAnswer];
    }
}

-(void)Category1{
    switch (QuestionSelected) {
        case 0:
            QuestionText.text = [NSString stringWithFormat:@"4+2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer3Correct = YES;
            break;
        case 1:
            QuestionText.text = [NSString stringWithFormat:@"4-2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer1Correct = YES;
            break;
        case 2:
            QuestionText.text = [NSString stringWithFormat:@"3+2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer2Correct = YES;
            break;
        case 3:
            QuestionText.text = [NSString stringWithFormat:@"4+15 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer4Correct = YES;
            break;
        default:
            break;
    }
}
-(void)Category2{
    switch (QuestionSelected) {
        case 0:
            QuestionText.text = [NSString stringWithFormat:@"4*2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"8" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer3Correct = YES;
            break;
        case 1:
            QuestionText.text = [NSString stringWithFormat:@"4/2 = ?"];
            [Answer1 setTitle:@"1" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer1Correct = YES;
            break;
        case 2:
            QuestionText.text = [NSString stringWithFormat:@"3+2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer2Correct = YES;
            break;
        case 3:
            QuestionText.text = [NSString stringWithFormat:@"4+15 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer4Correct = YES;
            break;
        default:
            break;
    }
}
-(void)Category3{
    switch (QuestionSelected) {
        case 0:
            QuestionText.text = [NSString stringWithFormat:@"4mod2 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"0" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer3Correct = YES;
            break;
        case 1:
            QuestionText.text = [NSString stringWithFormat:@"4mod3 = ?"];
            [Answer1 setTitle:@"1" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer1Correct = YES;
            break;
        case 2:
            QuestionText.text = [NSString stringWithFormat:@"3*2+13 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer4Correct = YES;
            break;
        case 3:
            QuestionText.text = [NSString stringWithFormat:@"4+15mod14 = ?"];
            [Answer1 setTitle:@"2" forState:UIControlStateNormal];
            [Answer2 setTitle:@"5" forState:UIControlStateNormal];
            [Answer3 setTitle:@"6" forState:UIControlStateNormal];
            [Answer4 setTitle:@"19" forState:UIControlStateNormal];
            Answer4Correct = YES;
            break;
        default:
            break;
    }
}



- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    
    if (GameInProgress == NO) {
        LivesNumeber = 3;
        ScoreNumber = 0;
        GameInProgress = YES;
    }
    Result.hidden = YES;
    Exit.hidden = YES;
    NextGames.hidden = YES;
    
    Lives.text = [NSString stringWithFormat:@"%i" , LivesNumeber];
    Score.text = [NSString stringWithFormat:@"%i" , ScoreNumber];
    
    
    
    
    Answer1Correct  = NO;
    Answer2Correct  = NO;
    Answer3Correct  = NO;
    Answer4Correct  = NO;
    
    
    CategoryLoaded = [[NSUserDefaults standardUserDefaults] integerForKey:@"CategorySaved"];
    QuestionSelected = arc4random() %4;
    switch (CategoryLoaded) {
        case 1:
            CategorySelected.text = [NSString stringWithFormat:@"Easy"];
            [self Category1];
            break;
        case 2:
            CategorySelected.text = [NSString stringWithFormat:@"Normal"];
            [self Category2];
            break;
        case 3:
            CategorySelected.text = [NSString stringWithFormat:@"Hard"];
            [self Category3];
            break;
        default:
            break;
    }