如何將UIPickerView的選定值用作通知的content.sound？

Question

我已經讀了How to use selected value of UIPickerView as time interval for notifications?一遍又一遍，但我不知道如何將答案應用於我的情況。

基本上，我用兩個選項編碼了選取器視圖。我不知道該怎麼

1）使每個挑選視圖行對應於一定的報警聲
2）使content.sound可以是兩種報警聲選擇一個變量。

我的Assets.xcassets中已經有兩個聲音文件了，我只是不知道如何將它編程到鬧鐘中。

這是我到目前爲止的代碼：

@IBOutlet weak var soundPickerView: UIPickerView! 

let sounds = ["chirping birds", "flowing water"] 

func numberOfComponents(in pickerView: UIPickerView) -> Int 
{ 
    return 1 
} 

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? 
{ 
    return sounds[row] 
} 

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int 
{ 
    return sounds.count 
} 


func scheduleNotification(at date: Date) { 
    let calendar = Calendar(identifier: .gregorian) 
    let components = calendar.dateComponents(in: .current, from: date) 
    let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute) 
    let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: false) 
    let content = UNMutableNotificationContent() 
    content.title = " wake up call " 
    content.body = "Time to wake up!" 
    content.sound = UNNotificationSound(named: "Morning Birds.aiff") 

還有其他代碼的通知要求等，但以上僅僅是相關的代碼。最後一行代碼是我知道需要修改的代碼。

Answer 1

我想你需要這樣的東西：

class ViewController: UIViewController, UIPickerViewDelegate, 
     UIPickerViewDataSource { 
     @IBOutlet weak var soundPickerView: UIPickerView! 

     override func viewDidLoad() { 
      super.viewDidLoad() 
      // Do any additional setup after loading the view, typically from a nib. 
     } 

     override func didReceiveMemoryWarning() { 
      super.didReceiveMemoryWarning() 
      // Dispose of any resources that can be recreated. 
     } 

     let dic = [ 
      "chirping birds" : "MorningBirdsFile.aiff" 
      ,"flowing water" : "FlowingWaterFile.aiff" 
     ] 

     func numberOfComponents(in pickerView: UIPickerView) -> Int 
     { 
      return 1 
     } 

     func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? 
     { 
      return Array(dic)[row].key 
     } 

     func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int 
     { 
      return dic.count 
     } 

     func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) { 
      let calendar = Calendar(identifier: .gregorian) 
      let components = calendar.dateComponents(in: .current, from: date) 
      let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute) 
      let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: false) 
      let content = UNMutableNotificationContent() 
      content.title = " wake up call " 
      content.body = "Time to wake up!" 
      content.sound = UNNotificationSound(named: Array(dic)[row].value) 


      print(Array(dic)[row].value) 
     } 
    } 

，或者你可以選擇器視圖的值，並將其存儲在某個變量，當用戶確認將其設置爲你的日曆。