在Tag Bar中使用Navgation
前面分别学到了Tag Bar和Navigation的使用，这次我们把他合起来使用，效果如下图





首先创建项目，选择window based application。项目名称为Nav_Tagbar。在.h中完成代码

#import <UIKit/UIKit.h>@interface Nav_TagbarAppDelegate : NSObject <UIApplicationDelegate> {    UIWindow *window;UITabBarController *rootController;}@property (nonatomic, retain) IBOutlet UIWindow *window;@property (nonatomic, retain) IBOutlet UITabBarController *rootController;@end

在.m中完成代码

#import "Nav_TagbarAppDelegate.h"@implementation Nav_TagbarAppDelegate@synthesize window;@synthesize rootController;#pragma mark -#pragma mark Application lifecycle- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {        [window addSubview:rootController.view];    [window makeKeyAndVisible];    return YES;}- (void)dealloc {[rootController release];    [window release];    [super dealloc];}@end

再创建三个类，名为navView，secondView，thirdView，并生成视图。下面进行页面设计。双击MainWindow.xib，首先将一个Tag Bar Controller拖入nib主窗口中，按住Ctrl将Nav Tagbar App Delegate拖入Tag Bar Controller。之后将一个Navigation Controller拖入Tag Bar Controller中，如图

再做好相对界面的视图和控制器选择。这是nav的选择




在navView.xib中生成一个按钮，实现入栈跳转。在相应的.h.m文件中实现如下代码

#import <UIKit/UIKit.h>@interface navView : UIViewController {}-(IBAction)buttonPressed;@end

#import "navView.h"#import "thirdView.h"@implementation navView-(IBAction)buttonPressed{thirdView *mythirdView = [[thirdView alloc] initWithNibName:@"thirdView" bundle:nil];[self.navigationController pushViewController:mythirdView animated:YES];[mythirdView release];}