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[已解决]swift中监控按钮被禁止的事件

iOS crifan 1002浏览 0评论

之前知道了,可以通过添加:

self.switchActionSegment.addTarget(self, action: #selector(self.segmentValueChanged(_:)), forControlEvents: UIControlEvents.ValueChanged)

去监控当控件的值发生变化了。

现在想要,对于一个 button,去监控,当按钮被enable设置为false,即disable时的事件

然后改变按钮边框颜色

自己看代码:

public struct UIControlEvents : OptionSetType {
    public init(rawValue: UInt)
    public static var TouchDown: UIControlEvents { get } // on all touch downs
    public static var TouchDownRepeat: UIControlEvents { get } // on multiple touchdowns (tap count > 1)
    public static var TouchDragInside: UIControlEvents { get }
    public static var TouchDragOutside: UIControlEvents { get }
    public static var TouchDragEnter: UIControlEvents { get }
    public static var TouchDragExit: UIControlEvents { get }
    public static var TouchUpInside: UIControlEvents { get }
    public static var TouchUpOutside: UIControlEvents { get }
    public static var TouchCancel: UIControlEvents { get }
    public static var ValueChanged: UIControlEvents { get } // sliders, etc.
    @available(iOS 9.0, *)
    public static var PrimaryActionTriggered: UIControlEvents { get } // semantic action: for buttons, etc.
    public static var EditingDidBegin: UIControlEvents { get } // UITextField
    public static var EditingChanged: UIControlEvents { get }
    public static var EditingDidEnd: UIControlEvents { get }
    public static var EditingDidEndOnExit: UIControlEvents { get } // ‘return key’ ending editing
    public static var AllTouchEvents: UIControlEvents { get } // for touch events
    public static var AllEditingEvents: UIControlEvents { get } // for UITextField
    public static var ApplicationReserved: UIControlEvents { get } // range available for application use
    public static var SystemReserved: UIControlEvents { get } // range reserved for internal framework use
    public static var AllEvents: UIControlEvents { get }
}
public enum UIControlContentVerticalAlignment : Int {
    case Center
    case Top
    case Bottom
    case Fill
}
public enum UIControlContentHorizontalAlignment : Int {
    case Center
    case Left
    case Right
    case Fill
}
public struct UIControlState : OptionSetType {
    public init(rawValue: UInt)
    public static var Normal: UIControlState { get }
    public static var Highlighted: UIControlState { get } // used when UIControl isHighlighted is set
    public static var Disabled: UIControlState { get }
    public static var Selected: UIControlState { get } // flag usable by app (see below)
    @available(iOS 9.0, *)
    public static var Focused: UIControlState { get } // Applicable only when the screen supports focus
    public static var Application: UIControlState { get } // additional flags available for application use
    public static var Reserved: UIControlState { get } // flags reserved for internal framework use
}

不知道,是否可以添加UIControlState变化的事件

好像不行。

只是button本事,支持当state变化时,设置标题颜色:

self.setTitleColor(CommonButtonDisabledColor, forState: UIControlState.Disabled)

swift button disable event

ios – Listening to Swift Button Disable event – Stack Overflow

iphone – on Disabale UIButton – Stack Overflow

可以集成button,重写setEnabled

结果没有办法重写setEnabled

没有这个函数setEnabled

-》其是ObjC时代的,get和setter的property所对应的函数

好像可以去复写enable参数,加上didSet

    override var enabled: Bool{
        didSet {
            if enabled {
                self.layer.borderColor = CommonButtonColor.CGColor
            } else {
                self.layer.borderColor = CommonButtonDisabledColor.CGColor
            }
        }
    }

果真实现了,

在默认enable时红色边框时:

当去禁止button时:

self.loginView.loginButton.enabled = false

设置了灰色边框:

对应的效果:

完整代码可参考:

https://github.com/crifan/crifanLib/blob/master/swift/UI/Button/CommonButton.swift

https://github.com/crifan/crifanLib/tree/master/swift/UI/Button

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