QQ20180316-115847-HD.gif
playButton.addTarget(self, action: #selector(playButtonAction), for: UIControlEvents.touchUpInside)
func resetButtonAction() {
}
错误提示
Argument of '#selector' refers to instance method 'playButtonAction()' that is not exposed to Objective-C
Add '@objc' to expose this instance method to Objective-C
@objc func resetButtonAction() {
}
效果图 项目代码地址 问题1：为button添加点击事件报错 错误提示Argument of '#selector...
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本文标题：Lesson1 - timer
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