TabBarController

TabBar是控制 控制器的控制器. 跟navigation类似.

在AppDelegate中创建TabBar对象

#import
"AppDelegate.h"

#import "FirstViewController.h"

#import "SecondViewController.h"

#import "ThirdViewController.h"

#import "FouthViewController.h"

#import "FifthViewController.h"

#import "SisthViewController.h"

@implementation AppDelegate

- (void)dealloc
{
[_window
release];
[super
dealloc];
}

@synthesize managedObjectContext =
_managedObjectContext;
@synthesize managedObjectModel =
_managedObjectModel;
@synthesize persistentStoreCoordinator =
_persistentStoreCoordinator;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary
*)launchOptions
{

self.window = [[[UIWindow
alloc] initWithFrame:[[UIScreen
mainScreen] bounds]]
autorelease];

// Override point for customization after application launch.

self.window.backgroundColor = [UIColor
whiteColor];

[self.window
makeKeyAndVisible];

FirstViewController *first = [[[FirstViewController
alloc]
init]autorelease];

SecondViewController *secton = [[[SecondViewController
alloc]
init] autorelease];

ThirdViewController *third = [[[ThirdViewController
alloc]
init] autorelease];

FouthViewController *fouth = [[[FouthViewController
alloc]
init] autorelease];

FifthViewController *fifth = [[[FifthViewController
alloc]
init] autorelease];

SisthViewController *sixth = [[[SisthViewController
alloc]
init] autorelease];

NSArray *array = [NSArray
arrayWithObjects:first,secton,third,fouth,fifth,sixth,
nil];

UITabBarController *tabBar = [[[UITabBarController
alloc]
init] autorelease];
tabBar.viewControllers = array;

tabBar.tabBar.tintColor = [UIColor
greenColor];
tabBar.delegate =
self;

self.window.rootViewController = tabBar;

return
YES;
}

// 以下是代理方法
- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController
*)viewController NS_AVAILABLE_IOS(3_0)
{

NSLog(@"Bool");

return
YES;
}
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController
*)viewController
{

NSLog(@"didSeclect");
}

- (void)tabBarController:(UITabBarController *)tabBarController willBeginCustomizingViewControllers:(NSArray
*)viewControllers NS_AVAILABLE_IOS(3_0)
{

NSLog(@"1");
}
- (void)tabBarController:(UITabBarController *)tabBarController willEndCustomizingViewControllers:(NSArray
*)viewControllers changed:(BOOL)changed
NS_AVAILABLE_IOS(3_0)
{

NSLog(@"2");
}
- (void)tabBarController:(UITabBarController *)tabBarController didEndCustomizingViewControllers:(NSArray
*)viewControllers changed:(BOOL)changed
{

NSLog(@"3");
}

- (NSUInteger)tabBarControllerSupportedInterfaceOrientations:(UITabBarController *)tabBarController
NS_AVAILABLE_IOS(7_0)
{

NSLog(@"4");

return
UIInterfaceOrientationMaskAll;
}
- (UIInterfaceOrientation)tabBarControllerPreferredInterfaceOrientationForPresentation:(UITabBarController
*)tabBarController NS_AVAILABLE_IOS(7_0)
{

NSLog(@"5");

return
UIInterfaceOrientationPortrait;
}

在第一个试图控制器中设置它的TabBar. (tabBar上的内容有三部分: 图片,文字,标记数字 )
#import
"FirstViewController.h"

@interface
FirstViewController ()

@end

@implementation FirstViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{

self = [super
initWithNibName:nibNameOrNil
bundle:nibBundleOrNil];

if (self) {

UIImage *image = [UIImage
imageNamed:@"searchSelected@2x.png"];

self.tabBarItem.image = image; // 图片

self.tabBarItem.title =
@"第一张"; // 文字

self.tabBarItem.badgeValue =
@"1"; // 徽章个数
}

return
self;
}

- (void)viewDidLoad
{

[super
viewDidLoad];

self.view.backgroundColor = [UIColor
randomColor];

// Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning
{

[super
didReceiveMemoryWarning];

}