我是Swift的新手,我正在尝试使用另一个类的名称数组重新填充pickerview。我有一个Notes类,用于创建注释,每个注释都有一个名称/标题,我正在尝试访问这些名称/标题并将其放在pickerview中,任何人都可以帮助我。
import UIKit
var allNotes: [Note] = []
var currentNoteindex: Int = -1
var noteTable: UITableView?
let kAllNotes:String = "notes"
class Note: NSObject
{
var date:String
var note:String
var name:String
override init()
{
date = NSDate().description
name = ""
note = ""
}
func dictionary() -> NSDictionary
{
return ["note": note, "date": date, "name": name]
}
我有两种不同的pickerview,一种有效,只是名称不起作用的一种。
override func viewDidLoad()
{
super.viewDidLoad()
fileNamePicker.dataSource = self
fileNamePicker.delegate = self
gradePicker.dataSource = self
gradePicker.delegate = self
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
if pickerView == gradePicker
{
return grades.count
}
else
{
return allNotes.count
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
if pickerView == gradePicker
{
return grades[row]
}
else
{
//This is where the Problem is, but I don't know how to fix it.
let nameFiles = allNotes[currentNoteindex].name
return nameFiles[row]
}
}
func numberOfComponents(in pickerView: UIPickerView) -> Int
{
return 1
}
最佳答案
nameFiles
正在访问注释中的名称。nameFiles[row]
不起作用,因为nameFiles
不是数组。
如果要返回字符串,只需执行return nameFiles
。不过,请首先检查以确保nameFiles
实际上具有值!