Question

在RangeText =“ { playlistNames = [] let requestLibrary = NSFetchRequest（entityName：“ Library”）

let request = NSFetchRequest<NSFetchRequestResult>(entityName: "Playlist")
request.sortDescriptors = [playlistSortDescriptor]

playlists = try? context.fetch(request) as NSArray!
print("Playlist Count - ",playlists.count)


let librarys:NSArray! = try? context.fetch(requestLibrary) as NSArray!
for library in librarys{
    let libraryName = (library as AnyObject).value(forKey: "library") as! String
    playlistNames += [libraryName]
}

for playlist in playlists{
    let playlistName = (playlist as AnyObject).value(forKey: "playlistName") as! String
    if playlistName == "Library" {
        playlistNames.insert(playlistName, at: 0)
    }else {
        playlistNames += [playlistName]
    }
}

}”

在RangeText =“ playlists = try时进行类型检查表达式时，将context.fetch（request）用作NSArray！”错误：细分错误：11

代码如下：

 func refreshPlaylists(){
    playlistNames = []
    let requestLibrary = NSFetchRequest<NSFetchRequestResult>(entityName: "Library")

    let request = NSFetchRequest<NSFetchRequestResult>(entityName: "Playlist")
    request.sortDescriptors = [playlistSortDescriptor]

    playlists = try? context.fetch(request) as NSArray!
    print("Playlist Count - ",playlists.count)


    let librarys:NSArray! = try? context.fetch(requestLibrary) as NSArray!
    for library in librarys{
        let libraryName = (library as AnyObject).value(forKey: "library") as! String
        playlistNames += [libraryName]
    }

    for playlist in playlists{
        let playlistName = (playlist as AnyObject).value(forKey: "playlistName") as! String
        if playlistName == "Library" {
            playlistNames.insert(playlistName, at: 0)
        }else {
            playlistNames += [playlistName]
        }
    }
}

在我更新到Xcode 10之前它可以工作。有什么想法吗？

Answer 1

没有NSArray!这样的类型，并且在任何情况下都没有任何理由要您强制使用它。删除as NSArray!。使用Swift类型。

细分错误：11-Xcode 10

1 个答案: