Xcode：LaunchScreen.storyboard 没有出现

Question

I'm trying to set up the launch screen and initial view of my app. However, I can't get either to show up.

I have this set up:

Am I missing a step? Shouldn't I be seeing a page with "blah" on it as the launch screen? Instead, when I run the simulator it's just black.

Also, I don't understand why my initial view isn't showing up either.

In my AppDelegate.swift file:

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?

  func application(application: UIApplication,
      didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        self.window?.rootViewController = self.rootViewController()
    return true
  }

  private func rootViewController() -> UIViewController {
    return MapViewController.init()
  }

}

And my MapViewController.swift:

import UIKit

class MapViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        var label = UILabel(frame: CGRectMake(0, 0, 200, 21))
        label.center = CGPointMake(160, 284)
        label.textAlignment = NSTextAlignment.Center
        label.text = "I am a test label"
        self.view.addSubview(label)
        NSLog("heyyyy!!") // <----------------- doesn't get printed either, so I think I'm missing something again...
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}

Sorry for the noob questions.

== UPDATE ==

I do get these 2 warnings when I build it:

file:///Users/emai/Documents/ios/Sherpa/SherpaNewYork/LaunchScreen.storyboard: warning: Unsupported Configuration: Scene is unreachable due to lack of entry points and does not have an identifier for runtime access via -instantiateViewControllerWithIdentifier:.

/Users/emai/Documents/ios/Sherpa/SherpaNewYork/LaunchScreen.storyboard:9: Scene is unreachable due to lack of entry points and does not have an identifier for runtime access via -instantiateViewControllerWithIdentifier:.

Answer 1

I also struggled with a launchscreen storyboard not showing up. I tried everything fix I could find to no avail. Then I cleared the cache on my Simulator and it worked! Turned out it was a simulator problem. I cleared the cache with this command in terminal: xcrun simctl erase all

Answer 2

It looks like you haven't set up your storyboards with an entry point. Set up the first scene you want to show as the Initial View Controller

Answer 3

sure, this answer is a little late. ;-) Had the some problem but i fortuitous found a quiet simple solution using the Launch Screen.storyboard created with the app automatic.

Open the App-Settings and there App Icons and Launch Images

Select Launch Screen.storyboard in the DropDown-List, even when u think, this is already selected. The display of the screen won´t change after selecting. But when restart the project, the Launch Screen was showed!

BTW to test this tidy, u can set a breakpont in the last line of func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?)

Answer 4

had the same problem with the launchscreen. As mentioned from Abizern, there is no ViewController allowed. If you had one only deleting this one will not be enough some times. The LaunchScreen file could still have some connections to the ViewController which is not available any more. This is a problem, too.

My fix:

1. Delete ViewController for LaunchScreen
2. Removed connections in LaunchScreen.storyboard
3. Removed app from Device
4. Reinstall

-> Worked :)

Answer 5

What you are missing is that a launch screen is static! It does not need a controller or anything. A controller will not do anything. For the launch screen you can design the UI only using the interface builder, not via code.

Xcode should generally tell you that, if you try to set a custom controller on the launch screen view it results in an error.

Answer 6

So deleting the LaunchScreen.storyboard + LaunchScreenViewController.swift files and adding a Launch Screen.xib file worked in fixing the launch screen. This makes sense to me since the launch screen should be static and not use code.

However the view is still black after the launch screen. I'll make another SO question for that.

Answer 7

i know it is very late but i want to share how i fixed it, if you are checking on real device then try to delete the app first, restart the handset and then reinstall the app. it will be fixed if you have followed all steps like clearing cache and settings in Target - General Tab etc.

Answer 8

In my case, the project navigator file filter was set to "recent". See bottom left of Xcode. I unselected recent, and the file showed up.

Answer 9

After trying every other answer here, I finally deleted the LaunchScreen.Storyboard file and created a new one. This was the only thing that fixed the issue for me.

Answer 10

Easiest solution is to uninstall and reinstall the app when testing in the simulator. No need to remove and re-create LaunchScreen.Storyboard .