iOS设计之 多视图导航栏UINavigationController切换视图的简单设计

在iOS平台上创建有个工程，之后在工程中创建两个类视图

操作步骤如下

1、在分别在两个类视图中对主视图设置背景色

 

FirstViewController.m

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad {
    [super viewDidLoad];
   
    //设置主视图的背景色
    self.view.backgroundColor=[UIColor greenColor];

 

   

}

 

 SecondViewController.m

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (void)viewDidLoad {
    [super viewDidLoad];
  //设置主视图的背景色
    self.view.backgroundColor=[UIColor blueColor];

 

}

 

 

 

2、在 AppDelegate中创建导航栏和根视图

AppDelegate.h

 

#import <UIKit/UIKit.h>
#import "FirstViewController.h"
#import "SecondViewController.h"
@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@end

 

 

 AppDelegate.m

#import "AppDelegate.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   
    //创建视图对象
    FirstViewController *firstVC=[[FirstViewController alloc]init];
    SecondViewController *secondVC=[[SecondViewController alloc]init];
    //导航栏

    UINavigationController *naviGC=[[UINavigationController alloc]initWithRootViewController:firstVC];

    naviGC.tabBarItem.title=@"first";
    naviGC.tabBarItem.badgeValue=@"4";
   
    secondVC.tabBarItem.title=@"second";
    secondVC.tabBarItem.badgeValue=@"1";
   
    UITabBarController *tabBarC=[[UITabBarController alloc]init];
    [tabBarC setViewControllers:@[naviGC,secondVC]];
   
    //根视图
    self.window.rootViewController=tabBarC;
   
   
    return YES;

}

 

3、结果效果图

分别点击视图的中的“4(first)”和“1(second)”可以切换到对应的视图