纯代码定义一个标准的tabBar_代码tabar是什么-优快云博客

本文链接：https://blog.youkuaiyun.com/titer1991/article/details/7944770

本文详细介绍了如何使用Objective-C编程语言创建一个带有Tab Bar Controller的iOS应用，包括Tab Bar Controller的基本概念、如何实现Tab Bar Controller、以及如何在Tab Bar Controller中添加不同类型的视图控制器。

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AppDelegate.h 头文件

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>
{
    UITabBarController * tabBar;

}

@property(nonatomic,retain)UITabBarController * tabBar;

@property (strong, nonatomic) UIWindow *window;

@end

AppDelegate.m

#import "AppDelegate.h"
#import "FirstViewController.h"
#import "SecondViewController.h"
#import "ThreeViewController.h"
#import "FourViewController.h"
#import "FiveViewController.h"
@implementation AppDelegate

@synthesize window = _window;
@synthesize tabBar;//tabBar接口
- (void)dealloc
{
    [_window release];
    [super dealloc];
}

- (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];	//设置背景颜色
    
//=============================================== 
    
    FirstViewController * first = [[[FirstViewController alloc]init]autorelease];	//实例化视图控制器
    SecondViewController * second = [[[SecondViewController alloc]init]autorelease];
    ThreeViewController * three = [[[ThreeViewController alloc]init]autorelease];
    FourViewController * four =  [[[FourViewController alloc]init]autorelease];
    FiveViewController * five = [[[FiveViewController alloc]init]autorelease];
    
    UINavigationController *firstNavController =[[UINavigationController alloc] initWithRootViewController:first];	//实例化导航控制器，并关联视图控制器
    UINavigationController *secondNavController =[[UINavigationController alloc] initWithRootViewController:second];
    UINavigationController *threeNavController = [[UINavigationController alloc] initWithRootViewController:three];
    UINavigationController *fourNavController = [[UINavigationController alloc] initWithRootViewController:four];
    UINavigationController *fiveNacController = [[UINavigationController alloc] initWithRootViewController:five];
    
    NSArray * viewControllers = [NSArray arrayWithObjects:firstNavController,secondNavController,threeNavController,fourNavController,fiveNacController,nil];	//创建一个静态数组，并关联导航控制器
    
    tabBar = [[UITabBarController alloc]init];	//为tabBar分配空间，并初始化
    tabBar.viewControllers = viewControllers;	//将导航控制器数组关联到tabBar
    [self.window addSubview:tabBar.view];	//添加tabBar视图到window
      
//=================================================     
    [self.window makeKeyAndVisible];
    return YES;
}

@end

一个视图控制器FirstViewController.h

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController
{
    //....................
}

@end

在FirstViewController.m中对tabBar进行设置

FirstViewController.m

#import "FirstViewController.h"
@interface FirstViewController()

@end

@implementation FirstViewController


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        self.tabBarItem.image = [UIImage imageNamed:@"tabBar底部小图标.png"];
        self.tabBarItem.title = @"小图标底部小字";
        self.navigationItem.title = @"导航栏标题";
    }
    return self;
}