#import 
     
      @interface AppDelegate : UIResponder 
      
       @property (strong, nonatomic) UIWindow *window;@end
      
     

#import "AppDelegate.h"#import "KeyViewController.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];    //初始化导航    UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:[[KeyViewController alloc] init]];        //设置导航栏的背景颜色（iOS7之后）    [[UINavigationBar appearance] setBarTintColor:[[UIColor alloc] initWithRed:133/255.0 green:0 blue:47/255.0 alpha:1]];        //使用背景图片来设置导航栏的颜色（iOS7之后）//    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"顶栏背景"] forBarMetrics:UIBarMetricsDefault];        //设置导航栏上文字的颜色（iOS7之后）    [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor orangeColor]}];    self.window.rootViewController = navi;        [self.window makeKeyAndVisible];    return YES;}@end

#import 
     
      @interface KeyViewController : UIViewController@end
     

#import "KeyViewController.h"@interface KeyViewController ()@end@implementation KeyViewController- (void)viewDidLoad {    [super viewDidLoad];    self.title = @"提取现金";    }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end