控制storyboard , reload storyboard , segue

好用參考來源
http://ryan.easymorse.com/?p=39

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要使每次載入都回到login
可在applicationWillEnterForeground加上

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];

    

    self.window.rootViewController = [storyboard instantiateInitialViewController];

    

    [self.window makeKeyAndVisible];

這樣可以reload整個storyboard，等於跟剛開啟一樣

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還有控制segue

    

    [self performSegueWithIdentifier:@"push to photolibrary" sender:nil];

詳細猜考來源

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直接載入特定storyboard

    UIStoryboard *storybord = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];

    [self presentViewController:[storybord instantiateViewControllerWithIdentifier:@"PhotoLibrary"] animated:NO completion:nil];