UINavigationController和UIBarButtonItem的例子

#import "AppDelegate.h"

#import "FirstViewController.h"

#import "SecondViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

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

{

//创建导航栏视图

UINavigationController *navc1=[[UINavigationController alloc] initWithRootViewController:[FirstViewController new]];

//分栏名字

navc1.tabBarItem.title=@"消息";

//提示消息

navc1.tabBarItem.badgeValue=@"2";

//添加图片

navc1.tabBarItem.image=[UIImage imageNamed:@"1"];

UINavigationController *navc2=[[UINavigationController alloc] initWithRootViewController:[SecondViewController new]];

navc2.title=@"动态";

navc2.tabBarItem.badgeValue=@"2";

//创建分栏

UITabBarController *tab=[[UITabBarController alloc] init];

//将两个导航栏添加到底部视图

tab.viewControllers=@[navc1,navc2];

navc2.tabBarItem.image=[UIImage imageNamed:@"2"];

//添加前景色

tab.tabBar.tintColor=[UIColor greenColor];

//将底部视图添加到根视图上

self.window.rootViewController=tab;

return YES;

}

#import <UIKit/UIKit.h>

#import "SecondViewController.h"

@interface FirstViewController : UIViewController

@end

#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (void)viewDidLoad

{

[super viewDidLoad];

//更换背景色

self.view.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"20141110_f64c52ed5be2176adaa1mADR4skv4nYU.jpg"]];

//添加标题

self.title=@"第一个视图";

//更换标题的前景色

self.navigationController.navigationBar.titleTextAttributes=@{NSForegroundColorAttributeName:[UIColor yellowColor]};

//创建一个导航栏按钮

UIBarButtonItem *Tab=[[UIBarButtonItem alloc] initWithTitle:@"next" style:2 target:self action:@selector(Next)];

//更改前景色

Tab.tintColor=[UIColor redColor];

//添加右边按钮

self.navigationItem.rightBarButtonItem=Tab;

}

-(void)Next

{

SecondViewController *second=[[SecondViewController alloc] init];

//导航栏视图 ：推到下一页

[self.navigationController pushViewController:second animated:YES];

}

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (void)viewDidLoad

{

[super viewDidLoad];

self.view.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"8efce6cd7b899e51feb2371b40a7d933c8950d83.jpg"]];

self.title=@"第二个视图";

self.navigationController.navigationBar.titleTextAttributes=@{NSForegroundColorAttributeName:[UIColor greenColor]};

UIBarButtonItem *tab=[[UIBarButtonItem alloc] initWithTitle:@"back" style:2 target:self action:@selector(BackPage)];

self.navigationItem.leftBarButtonItem=tab;

}

-(void)BackPage

{

//出栈 返回到上一页

[self.navigationController popViewControllerAnimated:YES];

}