iphone - 有没有办法让 App Delegate 运行条件，然后选择 Storyboard入口点？

Question

如果我使用 Storyboard并且入口点是 viewController1。

有没有办法让 App Delegate 运行条件，然后选择 Storyboard入口点 - viewController1 或 viewController2？

我想从 App Delegate 中选择是否打开位置服务，然后执行如下操作:

   (![CLLocationManager locationServicesEnabled]) 
   {

        self.viewController = [[viewController1 alloc] init];

        NSLog(@"vc is viewController2 from app del. loc svcs off");

    }
    else if ([CLLocationManager locationServicesEnabled])  
    {
        // alert location services denied

        self.viewController = [[viewController2 alloc] init];

        NSLog(@"vc is viewController2 from app del. loc svcs on");

        NSLog(@"core location is on");

    }

Answer 1

是的，你可以做到。

用下面的方法写下你的条件:

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

做这样的事情

if(Con1)
{
   window.rootViewController = [window.rootViewController.storyboard instantiateViewControllerWithIdentifier:@"rootViewController1"];
}
else
{
    window.rootViewController = [window.rootViewController.storyboard instantiateViewControllerWithIdentifier:@"rootViewController2"];
}