032实现导航条效果

1 #import <UIKit/UIKit.h>
2 
3 @interface ViewController : UIViewController
4 @end

 1 #import "ViewController.h"
 2 
 3 @interface ViewController ()
 4 - (void)layoutUI;
 5 @end
 6 
 7 @implementation ViewController
 8 - (void)viewDidLoad {
 9     [super viewDidLoad];
10     [self layoutUI];
11 }
12 
13 - (void)didReceiveMemoryWarning {
14     [super didReceiveMemoryWarning];
15     // Dispose of any resources that can be recreated.
16 }
17 
18 - (void) viewWillAppear:(BOOL)animated {
19     [super viewWillAppear:animated];
20     [self.navigationController setNavigationBarHidden:NO animated:NO];
21     [self.navigationController setToolbarHidden:NO animated:NO];
22 }
23 
24 - (void)layoutUI {
25     self.navigationItem.prompt = @"标题上面的小提示";
26     self.navigationItem.title = @"导航条标题";
27     
28     UIImage *imgIcon = [UIImage imageNamed:@"Smile.png"];
29     UIImageView *imgV = [[UIImageView alloc] initWithImage:imgIcon];
30     self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:imgV];
31     
32     self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:nil action:nil];
33 }
34 
35 @end

1 #import <UIKit/UIKit.h>
2 
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 @property (strong, nonatomic) UIWindow *window;
5 @property (strong, nonatomic) UINavigationController *navigationController;
6 
7 @end

 1 #import "AppDelegate.h"
 2 #import "ViewController.h"
 3 
 4 @interface AppDelegate ()
 5 @end
 6 
 7 @implementation AppDelegate
 8 
 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
10     _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
11     ViewController *viewController = [[ViewController alloc] init];
12     _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
13     _window.rootViewController = _navigationController;
14     [_window addSubview:_navigationController.view];
15     [_window makeKeyAndVisible];
16     return YES;
17 }
18 
19 - (void)applicationWillResignActive:(UIApplication *)application {
20 }
21 
22 - (void)applicationDidEnterBackground:(UIApplication *)application {
23 }
24 
25 - (void)applicationWillEnterForeground:(UIApplication *)application {
26 }
27 
28 - (void)applicationDidBecomeActive:(UIApplication *)application {
29 }
30 
31 - (void)applicationWillTerminate:(UIApplication *)application {
32 }
33 
34 @end