IOS开发（11）之UITabBarController多视图控制器

1 前言
UITabBarController为多视图控制器，可以切换不同视图，今天我们来学习一下其简单用法。

2 代码实例
ZYViewController.h:

[plain]
#import <UIKit/UIKit.h>
#import "ZYFirstViewController.h"
#import "ZYSecondViewController.h"

@inte易做图ce ZYViewController : UIViewController

@property(nonatomic,strong) ZYFirstViewController *firstViewController;//第一个视图

@property(nonatomic,strong) ZYSecondViewController *secondViewController;//第二个视图

@property(nonatomic,strong) UITabBarController *taBarController;//多视图控制器

@property (strong,nonatomic) UINavigationController *firstnavigationController;//第一个视图导航栏

@property (strong,nonatomic) UINavigationController *secondnavigationController;//第二个视图导航栏

@end

#import <UIKit/UIKit.h>
#import "ZYFirstViewController.h"
#import "ZYSecondViewController.h"

@inte易做图ce ZYViewController : UIViewController

@property(nonatomic,strong) ZYFirstViewController *firstViewController;//第一个视图

@property(nonatomic,strong) ZYSecondViewController *secondViewController;//第二个视图

@property(nonatomic,strong) UITabBarController *taBarController;//多视图控制器

@property (strong,nonatomic) UINavigationController *firstnavigationController;//第一个视图导航栏

@property (strong,nonatomic) UINavigationController *secondnavigationController;//第二个视图导航栏

@endZYViewController.m:

[plain]
@synthesize firstViewController;
@synthesize secondViewController;
@synthesize taBarController;
@synthesize firstnavigationController;
@synthesize secondnavigationController;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.title = @"UITabBarControllerTest";
    self.firstViewController = [[ZYFirstViewController alloc] initWithNibName:nil bundle:nil];
    firstnavigationController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
    self.secondViewController = [[ZYSecondViewController alloc] initWithNibName:nil bundle:nil];
    secondnavigationController = [[UINavigationController alloc] initWithRootViewController:secondViewController];
    NSArray *twoViewControllers = [[NSArray alloc] initWithObjects:firstnavigationController,secondnavigationController, nil];//实例化视图数组
    self.taBarController = [[UITabBarController alloc] init];
    [self.taBarController setViewControllers:twoViewControllers];
    [self.view addSubview:taBarController.view];
}

@synthesize firstViewController;
@synthesize secondViewController;
@synthesize taBarController;
@synthesize firstnavigationController;
@synthesize secondnavigationController;

- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
    self.title = @"UITabBarControllerTest";
    self.firstViewController = [[ZYFirstViewController alloc] initWithNibName:nil bundle:nil];
    firstnavigationController = [[UINavigationController alloc] initWithRootViewController:firstViewController];
    self.secondViewController = [[ZYSecondViewController alloc] initWithNibName:nil bundle:nil];
    secondnavigationController = [[UINavigationController alloc] initWithRootViewController:secondViewController];
    NSArray *twoViewControllers = [[NSArray alloc] initWithObjects:firstnavigationController,secondnavigationController, nil];//实例化视图数组
    self.taBarController = [[UITabBarController alloc] init];
    [self.taBarController setViewControllers:twoViewControllers];
    [self.view addSubview:taBarController.view];
}
ZYFirstViewController.m:

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- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {//由于多视图控制器加载时候不会加载非首页面，所以把初始化放在该方法中
        self.title = @"First";//设置标题，并会自动赋给多视图控制器按钮
        self.tabBarItem.image = [UIImage imageNamed:@"first.png"];//添加图片
        self.view.backgroundColor = [UIColor whiteColor];
    }
    return self;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {//由于多视图控制器加载时候不会加载非首页面，所以把初始化放在该方法中
        self.title = @"First";//设置标题，并会自动赋给多视图控制器按钮
        self.tabBarItem.image = [UIImage imageNamed:@"first.png"];//添加图片
        self.view.backgroundColor = [UIColor whiteColor];
    }
    return self;
}
ZYSecondViewController.m:

[plain]
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        self.title = @"Second";
        self.tabBarItem.image = [UIImage imageNamed:@"second.png"];
        self.view.backgroundColor = [UIColor whiteColor];

    }
    return self;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        self.title = @"Second";
        self.tabBarItem.image = [UIImage imageNamed:@"second.png"];
        self.view.backgroundColor = [UIColor whiteColor];

}
return self;
}
运行结果：

当单击Second时候：

补充：移动开发 , IOS ,