方法:通過通知監聽鍵盤的動態

1.鍵盤的動態有四種:

public static let UIKeyboardWillShow: NSNotification.Namepublic static let UIKeyboardDidShow: NSNotification.Namepublic static let UIKeyboardWillHide: NSNotification.Namepublic static let UIKeyboardDidHide: NSNotification.Name

2.下面監聽下彈出之前,和回收之前的事件

//鍵盤彈起@objc private func willShow(nottification:NSNotification){let info:NSDictionary = nottification.userInfo as NSDictionary! // print(info)//通過輸出看到下面的信息/* Optional([AnyHashable("UIKeyboardCenterBeginUserInfoKey"): NSPoint: {207, 849},AnyHashable("UIKeyboardIsLocalUserInfoKey"): 1,AnyHashable("UIKeyboardCenterEndUserInfoKey"): NSPoint: {207, 623},AnyHashable("UIKeyboardBoundsUserInfoKey"): NSRect: {{0, 0}, {414, 226}},AnyHashable("UIKeyboardFrameEndUserInfoKey"): NSRect: {{0, 510}, {414, 226}},AnyHashable("UIKeyboardAnimationCurveUserInfoKey"): 7,AnyHashable("UIKeyboardFrameBeginUserInfoKey"): NSRect: {{0, 736}, {414, 226}},
AnyHashable("UIKeyboardAnimationDurationUserInfoKey"): 0.25])*///取出鍵盤的高度let keyValue = info.object(forKey: "UIKeyboardFrameEndUserInfoKey")let keyRect = (keyValue as AnyObject).cgRectValuelet height = keyRect?.size.heightprint(height!)}//鍵盤收起@objc private func willHide(nottification:NSNotification){}

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轉載于:https://www.cnblogs.com/xingsmile/p/6283052.html

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