曖昧使用標使用[indexPath.section] [indexPath.row]

Question

我更新到7.2的Xcode後錯誤彈出說「曖昧使用的下標」在下面：

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 
     let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) 

     /*ERROR - Ambiguous use of subscript*/ 
     cell.textLabel?.text = self.tvArray[indexPath.section][indexPath.row] as? String 

     //..... more code 
} 

誰能告訴我我在執行tvArray時做了什麼錯誤？

的設置：

var tvArray = [] 

override func viewWillAppear(animated: Bool) { 
super.viewWillAppear(true) 

    //..... more code 
    tvArray = [["Airing Today", "On The Air", "Most Popular", "Top Rated"], ["Action & Adventure", "Animation", "Comedy", "Documentary", "Drama", "Family", "Kids", "Mystery", "News", "Reality", "Sci-Fic & Fantasy", "Soap", "Talk", "War & Politics", "Western"]] 
    //..... more code 
} 

Answer 1

tvArray = []沒有明確的類型推斷[AnyObject]。

告訴編譯器數組的正確類型：Array包含String的數組。
然後它知道數組可以通過索引來下標。

var tvArray = Array<[String]>() 

或

var tvArray = [[String]]() 

額外的好處：在cellForRowAtIndexPath類型轉換不需要

cell.textLabel?.text = self.tvArray[indexPath.section][indexPath.row]