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swift中系统通知名修改对照:

swift中系统通知名修改对照:

作者: 歌手的剑 | 来源:发表于2017-03-13 16:38 被阅读195次

    键盘状态改变的时候,系统会发出一些特定的通知

    UIKeyboardWillShowNotification//键盘即将显示

    UIKeyboardDidShowNotification//键盘显示完毕

    UIKeyboardWillHideNotification//键盘即将隐藏

    UIKeyboardDidHideNotification//键盘隐藏完毕

    UIKeyboardWillChangeFrameNotification//键盘的位置尺寸即将发生改变

    UIKeyboardDidChangeFrameNotification//键盘的位置尺寸改变完毕

    系统发出键盘通知时,会附带一下跟键盘有关的额外信息(字典),字典常见的key如下:

    UIKeyboardFrameBeginUserInfoKey//键盘刚开始的frame

    UIKeyboardFrameEndUserInfoKey//键盘最终的frame(动画执行完毕后)

    UIKeyboardAnimationDurationUserInfoKey//键盘动画的时间

    UIKeyboardAnimationCurveUserInfoKey//键盘动画的执行节奏(快慢)

    UIKeyboardAnimationCurveUserInfoKey = 7; //动画执行的节奏

    UIKeyboardAnimationDurationUserInfoKey = "0.25";键盘弹出/隐藏的动画所需要的时间

    UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {320, 216}}”;//键盘的bounds

    UIKeyboardCenterBeginUserInfoKey = "NSPoint: {160, 588}”;//键盘准备弹出时的X,Y的中心坐标

    UIKeyboardCenterEndUserInfoKey = "NSPoint: {160, 372}”;//键盘弹出后的X,Y的中心坐标

    //键盘弹出刚开始的那一刻的frame

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 480}, {320, 216}}";

    //弹出完毕的时候,键盘的frame

    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 264}, {320, 216}}";

    //键盘退出的frame

    //键盘刚要退出那一刻的frame

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 264}, {320, 216}}";

    //键盘退出完毕那一刻的frame

    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 480}, {320, 216}}";



    以下是swift:


    extension NSNotification.Name {

    public static let UIWindowDidBecomeVisible: NSNotification.Name

    public static let UIWindowDidBecomeHidden: NSNotification.Name // nil

    public static let UIWindowDidBecomeKey: NSNotification.Name // nil

    public static let UIWindowDidResignKey: NSNotification.Name // nil

    public static let UIKeyboardWillShow: NSNotification.Name

    public static let UIKeyboardDidShow: NSNotification.Name

    public static let UIKeyboardWillHide: NSNotification.Name

    public static let UIKeyboardDidHide: NSNotification.Name

    @available(iOS 5.0, *)

    public static let UIKeyboardWillChangeFrame: NSNotification.Name

    @available(iOS 5.0, *)

    public static let UIKeyboardDidChangeFrame: NSNotification.Name

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