ios - 如何水平和垂直滚动 CollectionView 单元格..我正在使用 9 个单元格 CollectionView

Question

我对 Collection View 完全陌生，请帮助我在 Collection View 中垂直和水平滚动单元格:

viewcontroller.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegate>
{

UICollectionView *collectionView;

}
@end



viewcontroller.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init];

    collectionView=[[UICollectionView alloc] initWithFrame:self.view.frame 
collectionViewLayout:layout];

    [collectionView setDataSource:self];

    [collectionView setDelegate:self];

    [collectionView registerClass:[UICollectionViewCell class] 

forCellWithReuseIdentifier:@"cellIdentifier"];

    [collectionView setBackgroundColor:[UIColor redColor]];

    [self.view addSubview:collectionView];

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

    // Dispose of any resources that can be recreated.
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{

    return 9;

}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{

    UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath];


    cell.backgroundColor=[UIColor greenColor];

    return cell;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{

    return CGSizeMake(100, 100);

}
@end

Answer 1

我来晚了一点，但为了以防万一其他人查找到这一点，您可以使用 UICollectionViewFlowLayout 轻松设置 Collection View 滚动方向。

1. 创建 UICollectionViewFlowLayout 的实例
2. 将scrollDirection设置为UICollectionViewScrollDirectionHorizo​​ntal

3. 庆幸。

   -(实例类型)初始化{ UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init]; 布局.itemSize = CGSizeMake(106, 106); 布局.minimumInteritemSpacing = 1; 布局.minimumLineSpacing = 1; 布局.scrollDirection = UICollectionViewScrollDirectionHorizo​​ntal; self= [ super initWithCollectionViewLayout:layout]; 返回 self ；