KeyBoard 在iOS7和iOS8上通知的区别

首先注册通知如下：

NSNotificationCenter.defaultCenter().addObserver(self,
selector: "keyboardWillShow:", name:UIKeyboardWillChangeFrameNotification, object:nil)

通知内容：

func keyboardWillShow(noti:NSNotification){

var userInfo :NSDictionary = noti.userInfo!

var  duration :NSValue =
userInfo["UIKeyboardAnimationDurationUserInfoKey"]asNSValue

var animationDuration :NSTimeInterval!
=0

duration.getValue(&animationDuration)

var keyFrame :NSValue
= userInfo["UIKeyboardFrameEndUserInfoKey"]as
NSValue

var krect = keyFrame.CGRectValue()

}

打印内容如下：

注明：这是iPad横向的时候哦。

iOS7.1:键盘响应，弹起

{

    UIKeyboardAnimationCurveUserInfoKey = 7;

    UIKeyboardAnimationDurationUserInfoKey = "0.25";

    UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {1024, 406}}";

    UIKeyboardCenterBeginUserInfoKey = "NSPoint: {512, 971}";

    UIKeyboardCenterEndUserInfoKey = "NSPoint: {512, 565}";

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{-406, 0}, {406, 1024}}";

    UIKeyboardFrameChangedByUserInteraction = 0;

    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 0}, {406, 1024}}";

}

键盘响应，收回resignFirstResponder

UIKeyboardWillChangeFrameNotification; userInfo = {

UIKeyboardAnimationCurveUserInfoKey = 7;

UIKeyboardAnimationDurationUserInfoKey = "0.25";

UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {1024, 406}}";

UIKeyboardCenterBeginUserInfoKey = "NSPoint: {512, 565}";

UIKeyboardCenterEndUserInfoKey = "NSPoint: {512, 971}";

UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 0}, {406, 1024}}";

UIKeyboardFrameChangedByUserInteraction = 0;

UIKeyboardFrameEndUserInfoKey = "NSRect: {{-406, 0}, {406, 1024}}";

}

iOS8:键盘响应，弹起

{

    UIKeyboardAnimationCurveUserInfoKey = 7;

    UIKeyboardAnimationDurationUserInfoKey = "0.25";

    UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {1024, 406}}";

    UIKeyboardCenterBeginUserInfoKey = "NSPoint: {512, 971}";

    UIKeyboardCenterEndUserInfoKey = "NSPoint: {512, 565}";

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 768}, {1024, 406}}";

    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 362}, {1024, 406}}";

}

键盘响应，收回resignFirstResponder

{

    UIKeyboardAnimationCurveUserInfoKey = 7;

    UIKeyboardAnimationDurationUserInfoKey = "0.25";

    UIKeyboardBoundsUserInfoKey = "NSRect: {{0, 0}, {1024, 406}}";

    UIKeyboardCenterBeginUserInfoKey = "NSPoint: {512, 565}";

    UIKeyboardCenterEndUserInfoKey = "NSPoint: {512, 971}";

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 362}, {1024, 406}}";

    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 768}, {1024, 406}}";

}