我想通过警报视图从AppDelegate推送到视图控制器。但是它不起作用。仅警报视图关闭。问题出在哪里？先谢谢您的帮助。 （NB>我的初始视图在情节提要中，但我正在推入视图控制器笔尖）
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
loginReapeat = [NSTimer scheduledTimerWithTimeInterval:60.0 target:self selector:@selector(repeatLoginProcess) userInfo:nil repeats:YES];
//First Launch Settings
if ([[NSUserDefaults standardUserDefaults] boolForKey:@"FirstLaunch"])
{
}
else
{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"FirstLaunch"];
[[NSUserDefaults standardUserDefaults] synchronize];
[self alertShow];
}
[window addSubview:[navigationController view]];
[window makeKeyAndVisible];
return YES;
}
-(void)alertShow{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Help!" message:@"Need some help to use this App? Please tap the 'Help' button." delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Help",nil];
[alert show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:@"Help"])
{
SignUp *signUp = [[SignUp alloc]initWithNibName:@"SignUp" bundle:nil];
[self.navigationController pushViewController:signUp animated:YES];
}
}
最佳答案
尝试这个：
SignUp *signUp = [[SignUp alloc]initWithNibName:@"SignUp" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:signUp];
self.window.rootViewController = self.navigationController;
关于iphone - 从AppDelegate无法使用pushViewController，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/16831768/