如何在没有Storyboard的情况下加载CollectionView

Question

我是iOS开发新手。我需要使用CollectionView而不使用Storyboard，并且此视图必须加载到选项卡中。这可能吗。

谢谢

Answer 1

雅。你可以创建编程

-(void)loadView 
{ 
[super loadView]; 

UICollectionViewFlowLayout *layout= [[UICollectionViewFlowLayout alloc]init]; 
self.collectionView = [[UICollectionView alloc]initWithFrame:self.view.bounds collectionViewLayout:layout]; 
self.collectionView.delegate=self; 
self.collectionView.dataSource=self; 
[self.collectionView setAutoresizingMask:UIViewAutoresizingFlexibleHeight |UIViewAutoresizingFlexibleWidth| UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin]; 

[self.collectionView setBackgroundColor:[UIColor clearColor]]; 
[self.collectionView registerClass:[UICollectionViewCell class] 
    forCellWithReuseIdentifier:@"Cell"]; 


[self.view addSubView:self.collectionView]; 
} 

Answer 2

你必须创建一个实现UICollectionViewDataSource和UICollectionViewDelegate这样的UIViewController子类：

@interface MyViewController:UIViewController<UICollectionViewDelegate, UICollectionViewDataSource> 
@end 

然后在.M文件你实现所需的UICollectionViewDataSource和UICollectionViewDelegate方法

并覆盖 - [UIViewController viewDidLoad]像这样：

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    UICollectionView *collectionView = [UICollectionView alloc] initWithFrame:self.view.bounds]; 
    collectionView.delegate = self; 
    collectionView.dataSource = self; 
    [self.view addSubview:collectionView]; 
}