通知监听键盘高度变化 自适应键盘高度

-（void）viewDidload

{

 //创建通知  监听键盘的变化

    

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillChangeFrameNotification object:nil];

}

#pragma mark  通知

- (void)keyboardWillShow:(NSNotification *)notification

{

    NSDictionary *dic = notification.userInfo;

    CGRect rect = [[dic objectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue];

    float height = rect.size.height;

    [UIView beginAnimations:nil context:nil];

    

    [UIView setAnimationDuration:.25];

    

    _tfView.frame = CGRectMake(0, self.view.frame.size.height-height-50, self.view.frame.size.width, 50);

    _tableView.frame = CGRectMake(0, 0, SCREEN.width, SCREEN.height-216-50);

    [UIView commitAnimations];

    

    

}

#pragma mark 点击return让键盘消失

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    [_tF resignFirstResponder];

    [UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:0.25];

    

    _tfView.frame = CGRectMake(0, SCREEN.height - 50, SCREEN.width, 50);

    _tableView.frame = CGRectMake(0, 0, SCREEN.width, SCREEN.height-50);

    [UIView commitAnimations];

    return YES;

}

//移除通知