IOS研究院之在IOS5中使用NavigationBar导航栏（八）

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

@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) UINavigationController *navController;
@property (strong, nonatomic) UIViewController *viewController;

@end

#import "AppDelegate.h"

@implementation AppDelegate

@synthesize window = _window;
@synthesize navController;
@synthesize viewController;

- (void)dealloc
{
    [_window release];
    [super dealloc];
}

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

    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    self.window.backgroundColor = [UIColor whiteColor];
    self.viewController =  [[[MyViewController alloc]init]autorelease];
    self.navController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
    [self.window addSubview:navController.view];

    [self.window makeKeyAndVisible];

    return YES;
}

@end

#import "MyViewController.h"

@implementation MyViewController

- (void)viewDidLoad
{

    [super viewDidLoad];

    //设置导航栏背景图片
    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"nav-bar.png"] forBarMetrics:UIBarMetricsDefault];

    //导航栏正中央图片
    UIImage * titleImage = [UIImage imageNamed:@"nav-logo.png"];
    UIImageView * titleview = [[UIImageView alloc]initWithImage:titleImage];
    //加在导航栏中
    self.navigationItem.titleView =titleview;

    //绘制导航栏右侧的图片按钮
    UIImage *rightButtonImage = [UIImage imageNamed:@"nav-bar-button.png"];
    UIImage *rightbuttonNormal = [rightButtonImage
                                             stretchableImageWithLeftCapWidth:10 topCapHeight:10];

    //设置按钮类型为自定义
    UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeCustom];
    //设置按钮的显示区域
    [rightButton setFrame: CGRectMake(0, 0, 50, 40)];
    //设置按钮的背景显示图
    [rightButton setBackgroundImage:rightbuttonNormal forState:UIControlStateNormal];
    //设置按钮的前景显示图
    [rightButton setImage:[UIImage imageNamed:@"nav-friends-icon.png"] forState:UIControlStateNormal];
    [rightButton setImage:[UIImage imageNamed:@"nav-friends-icon.png"] forState:UIControlStateHighlighted];
    //监听点击事件
    [rightButton addTarget:self action:@selector(RightDown) forControlEvents:UIControlEventTouchDown];
    //加载导航栏中
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithCustomView:rightButton];

    //含义和上面类似就不详解了
    //绘制导航栏左侧的图片按钮
    UIImage *leftButtonImage = [UIImage imageNamed:@"nav-bar-button.png"];
    UIImage *leftbuttonNormal = [leftButtonImage
                                  stretchableImageWithLeftCapWidth:10 topCapHeight:10];

    UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeCustom];

    [leftButton setFrame: CGRectMake(0, 0, 50, 40)];

    [leftButton setBackgroundImage:leftbuttonNormal forState:UIControlStateNormal];

    [leftButton setImage:[UIImage imageNamed:@"nav-menu-icon.png"] forState:UIControlStateNormal];
    [leftButton setImage:[UIImage imageNamed:@"nav-menu-icon.png"] forState:UIControlStateHighlighted];
    [leftButton addTarget:self action:@selector(leftDown) forControlEvents:UIControlEventTouchDown];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithCustomView:leftButton];

}

-(void) leftDown
{
    NSLog(@"按下左边按钮");
}

-(void) RightDown
{
    NSLog(@"按下右边按钮");
}

@end

    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"nav-bar.png"] forBarMetrics:UIBarMetricsDefault];

    UIImage *leftButtonImage = [UIImage imageNamed:@"nav-bar-back-button.png"];
    UIImage *leftbuttonNormal = [leftButtonImage
                                 stretchableImageWithLeftCapWidth:15 topCapHeight:15];

    UIBarButtonItem *item = [[[UIBarButtonItem alloc]init] autorelease];
    [item setBackButtonBackgroundImage:leftbuttonNormal forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];

    [item setTitle:@"雨松MOMO"];

    self.navigationItem.backBarButtonItem = item;