uinavigationitemdemo

//
//  AppDelegate.m
//  uinavigationitem
//
//  Created by panba on 16-1-5.
//  Copyright (c) 2016年 panba. All rights reserved.
//

#import "AppDelegate.h"
#import "RootViewController.h"
@interface AppDelegate ()
            

@end

@implementation AppDelegate
            

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    
    RootViewController *root = [[RootViewController alloc]init];
    
    UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:root];
    self.window.rootViewController = navController;
    
    [self.window makeKeyAndVisible];
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

//
//  RootViewController.m
//  uinavigationitem
//
//  Created by panba on 16-1-5.
//  Copyright (c) 2016年 panba. All rights reserved.
//

#import "RootViewController.h"
#import "SecondViewController.h"
@interface RootViewController ()

@end

@implementation RootViewController

- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor  redColor];
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [btn setTitle:@"pushToSecond" forState:UIControlStateNormal];
    btn.backgroundColor = [UIColor whiteColor];
    btn.frame = CGRectMake(10, 80, 300, 50);
    [btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn];
    
    //[self.navigationItem setTitle:@"Root"];
    //UIView *titleView = [[UIView alloc]initWithFrame:CGRectMake(10, 40, 100, 50)];
    //[titleView setBackgroundColor:[UIColor yellowColor]];
    //[self.navigationItem setTitleView:titleView];
    //设置导航栏不透明效果
    self.navigationController.navigationBar.translucent  = NO;
    
    //设置uibatbuttonitem,第一个uibarbuttonitem 左侧
    UIBarButtonItem *item1 = [[UIBarButtonItem alloc]initWithTitle:@"左侧" style:UIBarButtonItemStylePlain target:self action:@selector(itemClick:)];

    //设置第二个uibarbuttonitem，用图片来展示,注意ios8不会自动对image进行自适应。
    UIBarButtonItem *item2 = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"left_highlighted.png"] style:UIBarButtonItemStylePlain target:self action:@selector(itemClick:)];
    //定义一个数组，存放item1和item2两个uibarbutton。
    NSArray *arrLeftItem = [NSArray arrayWithObjects:item1,item2, nil];
    //设置左侧的两个uibarbuttonitem
    self.navigationItem.leftBarButtonItems = arrLeftItem;
    
    //设置右侧对uibarbuttonitem
    UIBarButtonItem *item3 = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(itemClick:)];
    
    UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    btn1.frame = CGRectMake(10, 10, 20, 20);
    btn1.backgroundColor = [UIColor redColor];
    UIBarButtonItem *item4 = [[UIBarButtonItem alloc]initWithCustomView:btn1];
    [btn1 addTarget:self action:@selector(itemClick:) forControlEvents:UIControlEventTouchUpInside];
    NSArray *arrRightItem = [NSArray arrayWithObjects:item3,item4, nil];
    self.navigationItem.rightBarButtonItems = arrRightItem;
    
    
    
    // Do any additional setup after loading the view.
}
-(void)btnClick:(UIButton *)btn
{
    SecondViewController *second = [[SecondViewController alloc]init];
    [self.navigationController pushViewController:second animated:YES];
}
-(void)itemClick:(UIBarButtonItem *)item
{
    self.view.backgroundColor = [UIColor greenColor];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end

//
//  SecondViewController.m
//  uinavigationitem
//
//  Created by panba on 16-1-5.
//  Copyright (c) 2016年 panba. All rights reserved.
//

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor blueColor];
    [self.navigationItem setTitle:@"second"];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end