iOS键盘弹出完美移动控件

添加监听(最好放在ViewWillAppear里, 在视图将要消失时移除监听)

这里监听键盘Frame的变化而不是监听键盘的显示和隐藏

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

实现方法

_toolBar是要移动的View控件

#pragma mark - 键盘Frame改变时调用
-(void)keyboardFrameChange:(NSNotification *)note
{
    CGFloat durtion = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];

    CGRect frame = [note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];

    if (frame.origin.y == self.view.frame.size.height)
    {
        // 没有弹出键盘
        [UIView animateWithDuration:durtion animations:^{

            _toolBar.transform = CGAffineTransformIdentity;
        }];
    }
    else
    {
        // 弹出键盘
        // 工具条向上移动键盘的高度
        [UIView animateWithDuration:durtion animations:^{

            _toolBar.transform = CGAffineTransformMakeTranslation(0, -frame.size.height);
        }];
    }
}