我在我的應用程序中製作了一個功能,可讓您將音樂靜音,我在此處放置了一個開關,以便您可以在開啓和關閉之間對其進行更改。但是,該開關在應用程序中正常工作,當我關閉vie控制器並將其拉回時,它仍會顯示它是如何離開的,但是當您關閉應用程序並將其打開時,開關看起來好像關閉了但它仍然播放音樂。這是我的代碼,我會附上一張照片。以用戶預設值保存數據
import Foundation
import UIKit
import SpriteKit
import AVFoundation
var bombSoundEffect: AVAudioPlayer!
var Ghost = SKSpriteNode()
class SecondViewController: UIViewController {
var sw = false
@IBOutlet var mySwitch: UISwitch!
@IBAction func switchpressed(_ sender: AnyObject) {
let defaults = UserDefaults.standard
if mySwitch.isOn{
defaults.set(true, forKey: "SwitchState")
if bombSoundEffect != nil {
bombSoundEffect.stop()
bombSoundEffect = nil
}
}
else{
defaults.set(false, forKey: "SwitchState")
let path = Bundle.main.path(forResource: "newmusic.wav", ofType:nil)!
let url = URL(fileURLWithPath: path)
do {
let sound = try AVAudioPlayer(contentsOf: url)
bombSoundEffect = sound
sound.numberOfLoops = -1
sound.play()
} catch {
// couldn't load file :(
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
super.viewDidLoad()
let defaults = UserDefaults.standard
if (defaults.object(forKey: "SwitchState") != nil) {
mySwitch.isOn = defaults.bool(forKey: "SwitchState")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Release any cached data, images, etc that aren't in use.
}
}
您是在應用程序委託中播放音樂還是在此視圖控制器中使用所有代碼? – WMios