如何在 Swift 中将 NSArray 从 Obj-C 转换为 Array？

Question

是的，我知道标题似乎有点明显，并且可以很容易地搜索到解决方案。我知道如何将一维 NSArray 转换为 Array，这很简单。

但是，这不是我的问题，因为我的 NSArray 不同。请看以下代码

NSArray *artists;

artists = @[@"Performed by: Legendary Group", @"Performed by: Ivan Cheong",
          @"Performed by: Tien Nguyen", @"", @[@"Performed by: DJ Happee From 
            Channel 3.3", @"Performed by: Adam Cease", @""], 
            @"Performed by: Music Between California and Summer", @""];

然后在cellForRowAtIndexPath，我正要这样访问它：

- (UITableViewCell *)tableView:(UITableView *)tableView 
   cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    ...
    if ( [ [artists[indexPath.section] objectAtIndex:indexPath.row] 
                isEqualToString:@""] )
    {
        ....
    }
}

您可以清楚地看到，我的 NSArray 在索引 4 处包含另一个数组。我需要这个以用于琐碎的目的。

我想知道是否可以将我的 NSArray 转换为 Swift 标准 Array 类型？

我已经尝试实现等效：

var temp = NSArray()

let artists = ["Performed by: Legendary Group", "Performed by: Ivan Cheong",   
           "Performed by: Tien Nguyen", "", ["Performed by: DJ Happee From 
        Channel 3.3", "Performed by: Adam Cease", ""], "Performed by: Music 
             Between California and Summer", ""]

temp = artists

这可以正常工作，但是，这不符合 Swift 2.0 的编码标准。

我想使用Array，但我不知道这是否可行？

谢谢

Answer 1

创建一个 AnyObjects 数组：

let artists: [AnyObject] = ["Performed by: Legendary Group", "Performed by: Ivan Cheong",
    "Performed by: Tien Nguyen", "", ["Performed by: DJ Happee From Channel 3.3", "Performed by: Adam Cease", ""], "Performed by: Music Between California and Summer", ""]

然后检查你的 tableView 函数中每个项目的类型并进行相应的处理：

 func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell {

        switch artists.indexPath {
        case is String: //handle string
        case is NSArray: //handle array
        default: //trap other stuff


        }
       }