iOS 监听键盘实现页面上滑下滑方法
键盘弹起下落连带页面滑动效果大同小异.
好吧.几句话.
首先,在viewdidload里对键盘进行监听.
//监听键盘
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillHide:) name:UIKeyboardWillHideNotification object:nil];
监听方法是自己写的,不习惯的可以自行修改
//监听键盘升起的方法
- (void)keyBoardWillShow:(NSNotification *)n {
//NSLog(@"%@",n.userInfo);
//获得键盘升起的时间
NSTimeInterval time = [[n.userInfo objectForKey:@"UIKeyboardAnimationDurationUserInfoKey"] floatValue];
//获得键盘升起的高度
float height = [[n.userInfo objectForKey:@"UIKeyboardFrameEndUserInfoKey"] CGRectValue].size.height;
[UIView animateWithDuration:time animations:^{
CGRect frame = self.view.frame;
frame.origin.y = -height;
self.view.frame = frame;
[self.view layoutIfNeeded];
}];
}
//监听键盘隐藏的方法
- (void)keyBoardWillHide:(NSNotification *)n {
NSTimeInterval time = [[n.userInfo objectForKey:@"UIKeyboardAnimationDurationUserInfoKey"] floatValue];
[UIView animateWithDuration:time animations:^{
CGRect frame = self.view.frame;
frame.origin.y = 0;
self.view.frame = frame;
[self.view layoutIfNeeded];
}];
}