使用源代码设置控件位置/隐藏tabbar

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loginView.frame = CGRectMake(33,20,253,191);

self.view.center = CGPointMake(x,y)来移动view就可以解决键盘档住的问题，其中x代表x轴的坐标，y代表y轴的坐标

原文址http://blog.csdn.net/dragoncheng/archive/2011/03/16/6254142.aspx

隐藏tabbar有两种方式：

1：在pushViewController之前调用

[self setHidesBottomBarWhenPushed:YES];

同时在viewWillDisappear调用：

- (void)viewWillDisappear:(BOOL)animated {
[self setHidesBottomBarWhenPushed:NO];
[super viewDidDisappear:animated];
}

2：使用函数：

- (void) hideTabBar:(BOOL) hidden{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0];
    for(UIView *view in self.tabBarController.view.subviews)
    {
        if([view isKindOfClass:[UITabBar class]])
        {
            if (hidden) {
                [view setFrame:CGRectMake(view.frame.origin.x, 480, view.frame.size.width, view.frame.size.height)];
            } else {
                [view setFrame:CGRectMake(view.frame.origin.x, 433, view.frame.size.width, view.frame.size.height)];
            }
        }
        else
        {
            if (hidden) {
                [view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 480)];
            } else {
                [view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 433)];
            }
        }
    }
    [UIView commitAnimations];
}

方式一的方法代码简单，且界面也好控制一些

PS:找了好久,都是隐藏掉tabBar, 要去掉tabBar然后重新开ToolBar什么的，我最后是选择从基函数移除tabBarController,转到NavigationController

-------------------------UISegmentedControl---------------- 引用http://blog.163.com/scelion@126/blog/static/6373749520101022102230848/

UISegmentedControl *segmentedControl=[[UISegmentedControl alloc] initWithFrame:CGRectMake(80.0f, 8.0f, 200.0f, 30.0f) ];
    [segmentedControl insertSegmentWithTitle:@"Food to eat" atIndex:0 animated:YES];
    [segmentedControl insertSegmentWithTitle:@"Food to avoid" atIndex:1 animated:YES];
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
    segmentedControl.momentary = YES;
    segmentedControl.multipleTouchEnabled=NO;
    [segmentedControl addTarget:self action:@selector(Selectbutton:) forControlEvents:UIControlEventValueChanged];
    UIBarButtonItem *segButton = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
    [segmentedControl release];
    self.navigationItem.rightBarButtonItem = segButton;
    [segButton release];