自定义标签栏（第二个）

Question

我对发展很新。目前我有一个定制的标签栏（使用每个标签的图像），它完美地工作，还包括一个表格视图和导航视图，然后通向第二个标签栏（我希望有不同的标签图像）。当我尝试在第二个标签栏区域中实现相同的代码时，它不起作用，而不是更改第二个标签栏，它将第一个标签栏更改为我的新图像。如何通过使用相同的代码或如何更改代码来阻止这种情况发生（显然，第二个标签栏的图像会发生变化）。我确信我可能需要添加或更改一些简单的内容。这是代码：

UIImage *selectedImage0 = [UIImage imageNamed:@"TabImage1DB.png"];
UIImage *unselectedImage0 = [UIImage imageNamed:@"TabImage1LB.png"];

UIImage *selectedImage1 = [UIImage imageNamed:@"TabImage2DB.png"];
UIImage *unselectedImage1 = [UIImage imageNamed:@"TabImage2LB.png"];

UIImage *selectedImage2 = [UIImage imageNamed:@"TabImage3DB.png"];
UIImage *unselectedImage2 = [UIImage imageNamed:@"TabImage3LB.png"];

UIImage *selectedImage3 = [UIImage imageNamed:@"TabImage4DB.png"];
UIImage *unselectedImage3 = [UIImage imageNamed:@"TabImage4LB.png"];

UIImage *selectedImage4 = [UIImage imageNamed:@"TabImage5DB.png"];
UIImage *unselectedImage4 = [UIImage imageNamed:@"TabImage5LB.png"];

UITabBar *tabBar = self.tabBarController.tabBar;
UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [tabBar.items objectAtIndex:2];
UITabBarItem *item3 = [tabBar.items objectAtIndex:3];
UITabBarItem *item4 = [tabBar.items objectAtIndex:4];

[item0 setFinishedSelectedImage:selectedImage0 withFinishedUnselectedImage:unselectedImage0];
[item1 setFinishedSelectedImage:selectedImage1 withFinishedUnselectedImage:unselectedImage1];
[item2 setFinishedSelectedImage:selectedImage2 withFinishedUnselectedImage:unselectedImage2];
[item3 setFinishedSelectedImage:selectedImage3 withFinishedUnselectedImage:unselectedImage3];
[item4 setFinishedSelectedImage:selectedImage4 withFinishedUnselectedImage:unselectedImage4];

---

这是我当前代码的方式，但仍然无效。

UITabBarController *townTabViewController = [[UITabBarController alloc] init];
townTabViewController.view.frame = CGRectMake(0, 0, 320, 460);

// Set each tab to show an appropriate view controller
[townTabViewController setViewControllers:[NSArray arrayWithObjects:townTabViewController, nil]];

// Add the tab controller view to the parent view
[self.view addSubview:townTabViewController.view];

UIImage *selectedImage0 = [UIImage imageNamed:@"HomeDB.png"];
UIImage *unselectedImage0 = [UIImage imageNamed:@"HomeLB.png"];

UIImage *selectedImage1 = [UIImage imageNamed:@"TabImage2DB.png"];
UIImage *unselectedImage1 = [UIImage imageNamed:@"TabImage2LB.png"];

UIImage *selectedImage2 = [UIImage imageNamed:@"TabImage3DB.png"];
UIImage *unselectedImage2 = [UIImage imageNamed:@"TabImage3LB.png"];

UIImage *selectedImage3 = [UIImage imageNamed:@"TabImage4DB.png"];
UIImage *unselectedImage3 = [UIImage imageNamed:@"TabImage4LB.png"];

UIImage *selectedImage4 = [UIImage imageNamed:@"TabImage5DB.png"];
UIImage *unselectedImage4 = [UIImage imageNamed:@"TabImage5LB.png"];

UITabBar *tabBar = self.tabBarController.tabBar;
UITabBarItem *item0 = [tabBar.items objectAtIndex:0];
UITabBarItem *item1 = [tabBar.items objectAtIndex:1];
UITabBarItem *item2 = [tabBar.items objectAtIndex:2];
UITabBarItem *item3 = [tabBar.items objectAtIndex:3];
UITabBarItem *item4 = [tabBar.items objectAtIndex:4];

[item0 setFinishedSelectedImage:selectedImage0 withFinishedUnselectedImage:unselectedImage0];
[item1 setFinishedSelectedImage:selectedImage1 withFinishedUnselectedImage:unselectedImage1];
[item2 setFinishedSelectedImage:selectedImage2 withFinishedUnselectedImage:unselectedImage2];
[item3 setFinishedSelectedImage:selectedImage3 withFinishedUnselectedImage:unselectedImage3];
[item4 setFinishedSelectedImage:selectedImage4 withFinishedUnselectedImage:unselectedImage4];

Answer 1

在上面的代码中，self.tabBarController指的是您已经设置的UITabBarController。您需要为此视图创建一个新的 - 如下所示：

UITabBarController *tabBarController = [[UITabBarController alloc] init];
tabBarController.view.frame = CGRectMake(0, 0, 320, 460);

 // Set each tab to show an appropriate view controller
[tabBarController setViewControllers:[NSArray arrayWithObjects:fooViewController, barViewController, nil]];

// Add the tab controller view to the parent view
[self.view addSubview:tabBarController.view];

现在，您可以通过将标签栏引用为tabBarController.tabBar来更改标签栏。