objective-c - iOS标签栏界面

Question

我有一个UITabBar应用程序的登录屏幕，其中用户分为两类。我想为一种类型的用户显示某个选项卡，为另一种类型的用户显示其他选项卡。有谁知道从哪里开始？

Answer 1

在我的一个应用程序中，我使用此代码在应用程序之间设置tabbarcontroller
首先创建没有tabbarcontroller的登录屏幕 这只是根据您的条件修改的示例在AppDelegate.m 中定义 tabbar 控制器

self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.delegate=self;
self.tabBarController.selectedIndex=0;
self.tabBarController.delegate=self;


- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController{
//NSUInteger index=[[tabBarController viewControllers] indexOfObject:viewController];

  // return YES;
}

在您登录的地方应用以下代码并使用标签栏控制器推送您的控制器

    AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    UIViewController *viewController1 = [[GeneralViewController alloc] initWithNibName:@"GeneralViewController" bundle:nil];
    UIViewController *viewController2 = [[MiscQuotationController alloc] initWithNibName:@"MiscQuotationController" bundle:nil];
    UIViewController *viewController4 = [[QuotationListController alloc] initWithNibName:@"QuotationListController" bundle:nil];
    UIViewController *viewController5 = [[ChargesViewController alloc] initWithNibName:@"ChargesViewController" bundle:nil];
    UIViewController *viewController7 = [[SalesPartViewController alloc] initWithNibName:@"SalesPartViewController" bundle:nil];

    ///   tab button title
    viewController1.title = @"Basic information";
    viewController2.title = @"Misc Quotation";
    viewController4.title = @"Quotation Line";
    viewController5.title = @"Charges";
    viewController7.title = @"Sales Part Stock";

    // tab button Images
    viewController1.tabBarItem.image = [UIImage imageNamed:@"general.png"];
    viewController2.tabBarItem.image = [UIImage imageNamed:@"misle.png"];
    viewController4.tabBarItem.image = [UIImage imageNamed:@"history.png"];
    viewController5.tabBarItem.image = [UIImage imageNamed:@"charges.png"];
    viewController7.tabBarItem.image = [UIImage imageNamed:@"shoebox.png"];

    delegate.tabBarController = [[UITabBarController alloc] init];
    delegate.tabBarController.selectedIndex = 0;

// 在这里写下你的用户条件

if(user == admin){
delegate.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1,  viewController4, viewController5, viewController7, nil];
}
else{
delegate.tabBarController.viewControllers = [NSArray arrayWithObjects: viewController2, viewController4, viewController5, viewController7, nil];
}
        delegate.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController4, viewController5, viewController7, nil];
        delegate.tabBarController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
        [self.navigationController pushViewController:delegate.tabBarController animated:YES];