如何在沒有Storyboard的情況下加載CollectionView

Question

我是iOS開發新手。我需要使用CollectionView而不使用Storyboard，並且此視圖必須加載到選項卡中。這可能嗎。

謝謝

Answer 1

雅。你可以創建編程

-(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

你必須創建一個實現UICollectionViewDataSource和UICollectionViewDelegate這樣的UIViewController子類：

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

然後在.M文件你實現所需的UICollectionViewDataSource和UICollectionViewDelegate方法

並覆蓋 - [UIViewController viewDidLoad]像這樣：

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