Question

- [__ NSCFArray objectAtIndex：]：索引（2）超出界限（2）＆＃39;
***首先抛出调用堆栈：

#pragma mark - Collection view data source
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
    return 1;
}

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    return  totalCountQuestion;
}

-(UICollectionViewCell *)collectionView:(UICollectionView*)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    QuestionCell *Quizcell=(QuestionCell *)[cv dequeueReusableCellWithReuseIdentifier:@"QuizCell" forIndexPath:indexPath];
    Quizcell.TotalQuestions.text=[NSString stringWithFormat:@"%ld",(long)indexPath.item+1]; 
    Question *question = self.currentQuiz[indexPath.row];
    Quizcell.image_Crt_Wrg.image=(question.selectedResponse == question.correctResponse) ? [UIImage imageNamed:@"Correct_images.png"] : [UIImage imageNamed:@"WrongShape.png"];
    return Quizcell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    index_value=indexPath.row;
}

//| -------------------------------------------------------------------------
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    Quiz *newQuiz = [[Quiz alloc] initWithQuestionsPlistAtURL:[[NSBundle mainBundle] URLForResource:TopicListArray[TopicIndex] withExtension:@"plist"]];
    NSIndexPath *selectedIndexPath=[[self.collectionView indexPathsForSelectedItems]objectAtIndex:index_value];
    _selectedCell=selectedIndexPath.item;
    ExplanationViewController *FirstQuestionVC = (ExplanationViewController*)[segue.destinationViewController viewControllers][0];
    FirstQuestionVC.currentQuiz=newQuiz;
    FirstQuestionVC.selectedCell=_selectedCell;
}

任何人帮助我，..

Answer 1

首先：我会用

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath;

而不是

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;

但我的猜测是你的问题在

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
 //...
 NSIndexPath *selectedIndexPath=[[self.collectionView indexPathsForSelectedItems]objectAtIndex:index_value];
_selectedCell=selectedIndexPath.item;

我猜我只选择了一个项目，所以你应该使用

NSIndexPath *selectedIndexPath = [[self.collectionView indexPathsForSelectedItems] firstObject];

和 NSIndexPath 不提供属性项。

我会在 collectionView：didSelectItemAtIndexPath 中实现 pushViewController：animated：。对于你可能 performSegueWithIdentifier：sender：是一个选项。

- [__ NSCFArray objectAtIndex：]：index（2）超出边界（2）＆＃39; ***第一次抛出调用堆栈：

1 个答案: