ios - UICollectionView Vertical 最后显示一半的单元格

Question

我有collectionView。它垂直显示单元格。

在开始时，collectionView 看起来像这样

start of the collectionview


最后它看起来像这样

end of collectionView


所以它最终基本上不会显示整个单元格
集合类的代码是

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

 }

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


#pragma mark - CollectionView Datasource

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

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
    return 9;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    ViewControllerCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];



    return cell;
}
@end

Answer 1

您必须在 Storyboard 中指定单元格大小。