以编程方式创建集合视图

迅速

func createCollectionView() {
    let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
    let collectionView = UICollectionView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height), collectionViewLayout: layout)
    collectionView.dataSource = self
    collectionView.delegate = self
    view.addSubview(collectionView)
}

Objective-C

- (void)createCollectionView {
    UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
    UICollectionView *collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) collectionViewLayout:layout];
    [collectionView setDataSource:self];
    [collectionView setDelegate:self];
    [self.view addSubview:collectionView];
}