中环集合视图访问对于斯威夫特

Question

我有这个数组，我创建：let yourShares = ["90%","40%", "23%","15%","10%"]然后接取此：

for yourShare in yourShares { 
     dataSource[0].yourShareTitle = "90%" 
     dataSource[1].yourShareTitle = "40%" 
     dataSource[2].yourShareTitle = "23%" 
     dataSource[3].yourShareTitle = "10%" 
    } 

然后访问此我把这个代码的扩展集合视图

let yourShare = model.dataSource?[indexPath.row] cell.yourShareLabel.text = "Your Share \(yourShare!.yourShareTitle)" cell.titleLabel?.font = UIFont.systemFont(ofSize: 1)

问题是，当我运行它只是打印可选。为什么，我该如何解决这个问题？ 〜感谢

Answer 1

你需要解开它

if let yourShare = model.dataSource?[indexPath.row]?.yourShareTitle as? String { 
     cell.yourShareLabel.text = "Your Share \(yourShare)" 
     cell.titleLabel?.font = UIFont.systemFont(ofSize: 1) 
}