IOS Project Development Layout 4

IOS Project Development Layout 4

Add the UITabViewController control and the top scroll bar based on the previous frame. First, check the file layout as shown in Figure

1. Add the following to DemMainViewController:

- (void)addMainController{    _tabController=[[UITabBarController alloc] init];    [_tabController.view setFrame: [self.view bounds]];        NSArray *classStringArray = [NSArray arrayWithObjects:@"DemFirstViewController",@"DemSecondViewController",@"DemThreeViewController",@"DemFourViewController",nil];        NSMutableArray *array = [[NSMutableArray alloc] init];        for (int i = 0; i < [classStringArray count]; i++) {        Class c = NSClassFromString([classStringArray objectAtIndex:i]);        DemFSTFViewController *fstfViewController = [[c alloc] init];        UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:fstfViewController];        [fstfViewController release];        [array addObject:nav];        [nav release];    }        [_tabController setViewControllers:array];        [self.view addSubview:_tabController.view];}

Note: The DemFirstViewController, DemSecondViewController, DemThreeViewController, and DemFourViewController classes inherit from the DemFSTFViewController base class and serve as the four controllers of TabBarViewController.

2. You can define a public method in DemFSTFViewController as follows:

- (void)setTitle:(NSString *)title withImageName:(NSString *)imageName{    self.title = title;    self.tabBarItem.image = [UIImage imageNamed:imageName];    self.navigationItem.title = title;}

Note: This method can be used to set title and tabbarItem for each subclass that inherits it.

The running result is as follows:

Figure 1

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