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我選擇選項卡式應用程序模板。然後我添加了CoolViewController,但它沒有出現在屏幕上。哪裏不對?我的視圖控制器沒有出現在屏幕上
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, nil];
self.window.rootViewController = self.tabBarController;
CoolViewController *coolVC = [[CoolViewController alloc] init];
coolVC.view.frame = CGRectMake(0, 0, 320, 200);
coolVC.view.backgroundColor = [UIColor blackColor];
[self.window addSubview:coolVC.view];
[self.window makeKeyAndVisible];
return YES;
}
@interface CoolViewController : UIViewController
@end
offtopic:你使用ARC? – CarlJ 2012-07-26 08:35:47
你可以嘗試:CoolViewController * coolVC = [[CoolViewController alloc] initWithNibName:@「CoolViewController」bundle:nil]; – parilogic 2012-07-26 08:36:32