ios - 如何使用 Swift 更改 iOS 中 UIButton 的状态？

Question

我有六个按钮的 Objective-C 工作代码，但我似乎没有找到如何使用 Swift 更改按钮的状态。那么如何让以下代码在 Swift 中运行？

[self.button2 setBackgroundImage:[UIImage imageNamed:@"button2_selected.png"] forState: UIControlStateSelected];
button1.selected = NO;
button2.selected = !button2.selected;
button3.selected = NO;
button4.selected = NO;
button5.selected = NO;
button6.selected = NO;

Answer 1

检查这个:

    var var_button_ =   UIButton()
    var_button_.setBackgroundImage(UIImage(named: "button2_selected.png"), forState: UIControlState.Normal)
    var_button_.selected = false
    var_button_.selected = !var_button_.selected
    //var_button_.selected = true

谢谢 由 JNYJ 提供