iOS中在tableview上通知控制键盘弹起界面上推的方法

上代码：

//注册通知

-(void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

     [[NSNotificationCenter
defaultCenter]addObserver:self
selector:@selector(openKeyboard:)
name:UIKeyboardWillShowNotification
object:nil];

     [[NSNotificationCenter
defaultCenter]addObserver:self
selector:@selector(closeKeyboard:)
name:UIKeyboardWillHideNotification
object:nil];

}

//注销通知

-(void)viewDidDisAppear:(BOOL)animated{

     [super viewDidDisappear:anima
4000
ted];

     [[NSNotificationCenter
defaultCenter]removeObserver:self
name:UIKeyboardWillShowNotification
object:nil];

     [[NSNotificationCenter
defaultCenter]removeObserver:self
name:UIKeyboardWillHideNotification
object:nil];

}

//键盘上弹

-(void)openKeyboard:(NSNotification *)notification{

     CGRect keyboardFrame = [notification.userInfo[UIKeyboardFrameEndUserInfoKey]CGRectValue];

     NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey]doubleValue];

     UIViewAnimationOptions option = [notification.userInfo [UIKeyboardAnimationCurveUserInfoKey]intValue];

    //  self.BottomLayoutConstaint.constant
这个是storyboard里面tableview的下沿，直接拉线的，而keyboardFrame.size.height是键盘的高度

     self.BottomLayoutConstaint.constant = keyboardFrame.size.height+99*SizeScaleY;

     [UIView
animateWithDuration:duration delay:0
options:option animations:^{

          [self.view
layoutIfNeeded];

     } completion:nil];

}

//恢复键盘

-(void)closeKeyboard:(NSNotification *)notification{

    

     self.BottomLayoutConstaint.constant = 0;

     NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey]doubleValue];

     UIViewAnimationOptions option = [notification.userInfo [UIKeyboardAnimationCurveUserInfoKey]intValue];

     [UIView
animateWithDuration:duration delay:0
options:option animations:^{

          [self.view
layoutIfNeeded];

     } completion:nil];

}

//tableView滚动的时候自动收回键盘

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView

{

    [[[UIApplication
sharedApplication] keyWindow]
endEditing:YES];

}

如上面设置就可以实现键盘的上弹和收回了，当然要灵活运用。