如何在特定标签栏上打开应用程序？iOS Objective-C

Question

我试图让应用程序在第三个标签栏上打开,而不是第一个.无论我将应用程序放在标签栏上的顺序是什么,左边的第一个始终首先打开.有人可以帮忙吗？下面是标签条形码.

 self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.

UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];

UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];

UIViewController *viewController3 = [[ThirdViewController alloc] initWithNibName:@"ThirdViewController" bundle:nil];

UIViewController *viewController4 = [[FourthViewController alloc] initWithNibName:@"FourthViewController" bundle:nil];

UITableViewController *viewController5 = [[FifthViewController alloc] initWithNibName:@"FifthViewController" bundle:nil];


self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController3, viewController4, viewController1, viewController2,  nil];
self.window.rootViewController = self.tabBarController;

Answer 1

你试过了吗

[self.tabBarController setSelectedIndex:2];