我在 iOS 应用程序中有一个底部工具栏，它只包含一个用于播放/暂停直播 Icecast 广播流的按钮。一切正常，除了按钮从播放图标变为暂停图标，反之亦然。这是我的代码。
@IBAction func PlayStop(_ sender: Any) {
if player.timeControlStatus == .playing {
// Stop the live radio stream
player.pause()
// Set the radio tower image to off with Alpha 0.3
TowerImage.image = UIImage(named: "TowerOff")
TowerImage.alpha = 0.3
// Set the Toolbar icon to the Play Icon
PlayStopButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.play, target: self, action: #selector(ViewController.PlayStop(_:)))
} else if player.timeControlStatus != .playing {
// Play the live radio stream
player.play()
// Set the radio tower image to on with Alpha 1
TowerImage.image = UIImage(named: "TowerOn")
TowerImage.alpha = 1
// Set the Toolbar icon to the Pause Icon
PlayStopButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.pause, target: self, action: #selector(ViewController.PlayStop(_:)))
}
}
@IBOutlet var TowerImage: UIImageView!
@IBOutlet var PlayStopButton: UIBarButtonItem!
最佳答案
然后你想把工具栏卡在 socket 上
let playStopButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.pause, target: self, action: #selector(ViewController.PlayStop(_:)))
self.toolBar.items = [playStopButton]
关于ios - UIButtonBarItem 没有改变，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53974290/