表格视图重新加载所有内容

Question

我只是想使用“验证”按钮将我带回到主页，但是每次我进入声音库时，主题都会一次又一次地重新加载。 我怎样才能解决这个问题？ f

//FUNCTION THAT GETS THE NAME OF THE SONGS
func gettingSongNames()
{
    let folderURL = URL(fileURLWithPath:Bundle.main.resourcePath!)

    do
    {
        let songPath = try FileManager.default.contentsOfDirectory(at: folderURL, includingPropertiesForKeys: nil, options: .skipsHiddenFiles)

        //loop through the found urls
        for song in songPath
        {
            var mySong = song.absoluteString

            if mySong.contains(".mp3")
            {
                let findString = mySong.components(separatedBy: "/")
                mySong = findString[findString.count-1]
                mySong = mySong.replacingOccurrences(of: "%20", with: " ")
                mySong = mySong.replacingOccurrences(of: ".mp3", with: "")

                songs.append(mySong)
            }

        }


    }

    catch
    {
        print ("ERROR")
    }
}

}