ios - 为什么 collectionView 单元格不显示在 iOS 中？

Question

您好，我可以从画廊获取图像，但 collectionViewCells 未显示在 UI 上。我拖放 collectionView 提供了与委托(delegate)和数据源方法的连接。但为什么没有获取 CollectionViewCells。我编写了这样的代码

- (void)viewDidLoad  
{ 
imagesArray = [NSMutableArray array]; 
[self.collectionView registerNib:[UINib nibWithNibName:@"MyCell" bundle:nil] forCellWithReuseIdentifier:@"CELL"]; 
}   

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info  
{ 
inputImage= info[UIImagePickerControllerEditedImage]; [imagesArray addObject:inputImage];
[picker dismissViewControllerAnimated:YES completion:nil];
} 

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView; {
return 1;
} 

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section 
{ 
return [imagesArray count];
} 

- (MyCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
MyCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CELL" forIndexPath:indexPath];
if(!cell) { 
cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"CELL"forIndexPath:indexPath];
}
recipeImageView = (UIImageView *)[cell viewWithTag:100];
recipeImageView.image =[imagesArray objectAtIndex:indexPath.row];        
[collectionView reloadData];
return cell;
}

请有人建议我怎么做。感谢帮助

Answer 1

问题是您在 cellForItemAtIndexPath 中调用 reloadData。这将导致无限循环。