UITableView键盘遮挡 自动上移

要实现这个功能  大家都知道监听键盘的响应事件是最好的

步骤1

监听键盘的响应和失去响应的两个事件

代码如下：

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

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

步骤2

实现监听的两个方法

代码如下：

- (void)keyboardWillShow:(NSNotification *)info
{
    CGRect keyboardBounds = [[[info userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    _tableView.contentInset = UIEdgeInsetsMake(_tableView.contentInset.top, 0, keyboardBounds.size.height, 0);

}
- (void)keyboardWillHide:(NSNotification *)info
{
    _tableView.contentInset = UIEdgeInsetsMake(_tableView.contentInset.top, 0, 0, 0);
}

步骤3

移除上面的两个监听事件

代码如下：

- (void)viewDidDisappear:(BOOL)animated
{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}

去试一下吧   很好用的一个小功能