TabBarController

最新推荐文章于 2019-08-27 10:40:00 发布

BIT8

最新推荐文章于 2019-08-27 10:40:00 发布

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CC 4.0 BY-SA版权

文章标签： TabBarController

本文链接：https://blog.youkuaiyun.com/u013082556/article/details/18178885

本文介绍如何在 iOS 应用中集成 UITabBarController，并展示了如何为不同的视图控制器设置 tabBar 的图标、标题和徽章值。文章还提供了 AppDelegate 中实现 UITabBarController 初始化和配置的示例代码。

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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];

}