m_listView:textview在tableview上，同时需要修改tableview高度 

//注册观察者

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

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

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

//显示附加工具栏

-(void)keyboarWillShow:(NSNotification*)obj{

//获取键盘的高度

    NSDictionary *userInfo = [obj userInfo];

    NSValue *aValue = http://www.mamicode.com/[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

    CGRect keyboardRect = [aValue CGRectValue];

    int height = keyboardRect.size.height;

[UIView animateWithDuration:0.2f animations:^(){

[m_listView setFrame:CGRectMake(0, [Utility getNavBarHight], ScreenWidth, ScreenHeight - [Utility getNavBarHight] - 50 - height)];

[menuView setFrame:CGRectMake(0, ScreenHeight - 50-height, m_listView.frame.size.width, 50)];

}];

[m_listView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:m_listView.curText.tag inSection:0] atScrollPosition:UITableViewScrollPositionNone animated:YES];

}

-(void)keyboardWillBeHidden:(NSNotification*)obj{

[UIView animateWithDuration:0.3f animations:^(){

[m_listView setFrame:CGRectMake(0, [Utility getNavBarHight], ScreenWidth, ScreenHeight - [Utility getNavBarHight] - 50)];

[menuView setFrame:CGRectMake(0, m_listView.frame.origin.y+ m_listView.frame.size.height, m_listView.frame.size.width, 50)];

}];

}