ios UICollectionView使用

UICollectionView列表视图和UITableView用法类似，直接给出代码

1. //
2. //  myUICollectionViewTestController.m
3. //  iosstudy2024
4. //
5. //  Created by figo on 2025/1/21.
6. //
8. #import "UICollectionViewTestController.h"
10. @interface UICollectionViewTestController ()<UICollectionViewDelegate,UICollectionViewDataSource>
11. @property (strong, nonatomic) IBOutlet UICollectionView *myUICollectionView;
13. @end
15. @implementation UICollectionViewTestController
17. - (void)viewDidLoad {
18.     [super viewDidLoad];
19.     // Do any additional setup after loading the view from its nib.
20. //    self.myUICollectionView.dataSource=self;
21. //    self.myUICollectionView.delegate=self;
22.    
23.     /* 纯代码方式写   **/
24.     // 设置 myUICollectionView 的布局
25.       UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
26.       
27.       // 初始化 myUICollectionView
28.       self.myUICollectionView = [[UICollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:layout];
29.       self.myUICollectionView.backgroundColor = [UIColor whiteColor];  // 设置背景色
30.       self.myUICollectionView.delegate = self;
31.       self.myUICollectionView.dataSource = self;
32.       
33.       // 注册 myUICollectionViewCell
34.       [self.myUICollectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"MyCell"];
35.       
36.       // 将 myUICollectionView 添加到视图中
37.       [self.view addSubview:self.myUICollectionView];
38.    
39. }
41. /*
42. #pragma mark - Navigation
44. // In a storyboard-based application, you will often want to do a little preparation before navigation
45. - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
46.     // Get the new view controller using [segue destinationViewController].
47.     // Pass the selected object to the new view controller.
48. }
49. */
52. - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
53.     UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"MyCell" forIndexPath:indexPath];
54.     cell.contentView.backgroundColor = [self randomColor];
55.     // 配置 cell，比如设置 label 文本
56.     return cell;
57. }
59. - (NSInteger)collectionView:(nonnull UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
60.     return 12;
61. }
65. - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
66.     NSLog(@"Selected item at index %ld", (long)indexPath.item);
67. }
69. - (UIColor *)randomColor {
70.     CGFloat red = (CGFloat)arc4random_uniform(256) / 255.0;
71.     CGFloat green = (CGFloat)arc4random_uniform(256) / 255.0;
72.     CGFloat blue = (CGFloat)arc4random_uniform(256) / 255.0;
73.    
74.     return [UIColor colorWithRed:red green:green blue:blue alpha:1.0];
75. }
77. @end

复制代码

免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！更多信息从访问主页：qidao123.com:ToB企服之家，中国第一个企服评测及商务社交产业平台。