在 viewController 之间跳转时出错

Question

这个有点困难。 我正在从 plist 加载问题、答案和正确答案。所有数据都被很好地读取，如下所示

- (void)viewDidLoad
{
[super viewDidLoad];
rootArray = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"question" ofType:@"plist"]];   
 currentQuestion = -1;
[self showNextQuestion];
}
-(void) showNextQuestion{
        currentQuestion++;
   int numItems = [rootArray count];
    NSMutableArray *question = [NSMutableArray arrayWithCapacity:numItems];
    NSMutableArray *A = [NSMutableArray arrayWithCapacity:numItems];
    NSMutableArray *B = [NSMutableArray arrayWithCapacity:numItems];
    NSMutableArray *C = [NSMutableArray arrayWithCapacity:numItems];
    NSMutableArray *addimage = [NSMutableArray arrayWithCapacity:numItems];
    NSMutableArray *Answer = [NSMutableArray arrayWithCapacity:numItems];
   for (NSDictionary *itemData in rootArray) {
    [question addObject:[itemData objectForKey:@"question"]];
    [A addObject:[itemData objectForKey:@"A"]];
    [B addObject:[itemData objectForKey:@"B"]];
    [C addObject:[itemData objectForKey:@"C"]];
    [addimage addObject:[itemData objectForKey:@"ImageUse"]];
    [Answer addObject:[itemData objectForKey:@"ANS"]];
}
self.questionasked.text = question[currentQuestion];
self.answer1.text = A[currentQuestion];
self.answer2.text = B[currentQuestion];
self.answer3.text = C[currentQuestion];
additionImage.image = [UIImage imageNamed:addimage[currentQuestion]];
self.correctAns = Answer[currentQuestion];
if(currentQuestion == 4){
   [ self performSegueWithIdentifier:@"levelclear" sender:nil];// here I am performing a segue to indicate that when 4 questions are displayed it will go to this view controller
}
}

我的 VC 中有 3 个按钮，每个选项 A、B、C 各一个，它们都有一个功能

- (IBAction)SelectA:(id)sender {
if ([self.correctAns isEqualToString:@"A"]) {
    currentQuestion ++;
    [self showNextQuestion];
}
else{
    [self performSegueWithIdentifier:@"incorrect" sender:nil];
}
}
- (IBAction)SelectB:(id)sender {

if ([self.correctAns isEqualToString:@"B"]) {
    currentQuestion ++;
[self showNextQuestion];
}
else{
    [self performSegueWithIdentifier:@"incorrect" sender:nil];

}
}
- (IBAction)SelectC:(id)sender {

if ([self.correctAns isEqualToString:@"C"]) {
    currentQuestion ++;
[self showNextQuestion];
}
else{
    [self performSegueWithIdentifier:@"incorrect" sender:nil];
}
}

当我正确回答问题时，它会转到下一个问题。但是，当我回答错误时，它会转到错误的 VC，通知错误的问题。当按下按钮返回问题 VC（我在情节提要中制作）时，此 VC 有一个转场。它确实回到了问题 VC，但只是跳回到了第一个问题。我知道这是关于 currentQuestion 的问题，但不确定是什么。

Answer 1

看起来当你选择不正确的答案时，你正在破坏问题视图控制器，当你回到它时，它会被重新创建。