swift - 将正确的图像加载到详细 View

Question

我有一个可以播放音乐的 TableView 应用程序。这些轨道被命名为:0.mp3、1.mp3 等。它们在详细 View 中播放，我还想要封面的图像。我将封面图片命名为:0.png、1.png 等。

我尝试使用代码加载正确的图像:

self.bookImage.image = UIImage(named: ("/\(trackID!).png"))

但它不起作用。

这是我的更多代码:

import UIKit
import AVFoundation

class AudioPlayerVC: UIViewController {

    var trackID: Int!
    var audioPlayer:AVAudioPlayer!

    @IBOutlet var bookImage: UIImageView! 

    @IBAction func play(_ sender: AnyObject) {
        if !audioPlayer.isPlaying{
            audioPlayer.play()
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        self.bookImage.image = UIImage(named: ("/\(trackID!).png"))
        trackLbl.text = "Track \(trackID!)"

        let path: String! = Bundle.main.resourcePath?.appending("/\(trackID!).mp3")
        let mp3URL = NSURL(fileURLWithPath: path)
        do
        {
            audioPlayer = try AVAudioPlayer(contentsOf: mp3URL as URL)
            audioPlayer.play()
        }
    }
}

Answer 1

你需要

self.bookImage.image = UIImage(named:"\(trackID).png")

或者

self.bookImage.image = UIImage(named:"\(trackID)")