How can I display a splash screen for longer on an iPhone?

Question

How can I display a splash screen for a longer period of time than the default time on an iPhone?

Answer 1

Swift 2.0

Use following line in didFinishLaunchingWithOptions: delegate method:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    NSThread.sleepForTimeInterval(5.0)
    return true
}

But I recommend this:

Put your image in a UIImageView full screen as a subview on the top of your main view thus covering your other UI. Set a timer to remove it after some seconds (possibly with effects) now showing your application.

import UIKit
    class ViewController: UIViewController
    {
        var splashScreen:UIImageView!
        override func viewDidLoad()
        {
            super.viewDidLoad()
            self.splashScreen = UIImageView(frame: self.view.frame)
            self.splashScreen.image = UIImage(named: "Logo.png")
            self.view.addSubview(self.splashScreen)
    
            var removeSplashScreen = NSTimer.scheduledTimerWithTimeInterval(3.0, target: self, selector: "removeSplashImage", userInfo: nil, repeats: false)
        }
        func removeSplashImage()
        { 
            self.splashScreen.removeFromSuperview()
        }
    }

Answer 2

Here is my simple splash screen code. 'splashView' is an outlet for a view that contains an image logo, UIActivityIndicator, and a "Load.." label (added to my 'MainWIndow.xib' in IB). The activity indicator is set to 'animating' in IB, I then spawn a separate thread to load the data. When done, I remove the splashView and add my normal application view:

-(void)applicationDidFinishLaunching:(UIApplication *)application {
    [window addSubview:splashView];
    [NSThread detachNewThreadSelector:@selector(getInitialData:) 
                                 toTarget:self withObject:nil];
}

-(void)getInitialData:(id)obj {
    [NSThread sleepForTimeInterval:3.0]; // simulate waiting for server response
    [splashView removeFromSuperview];
    [window addSubview:tabBarController.view];
}

Answer 3

I agree it can make sense to have a splash screen when an app starts - especially if it needs to get some data from a web site first.

As far as following Apple HIG - take a look at the (MobileMe) iDisk app; until you register your member details the app shows a typical uitableview Default.png before very quickly showing a fullscreen view.

Answer 4

just make the window sleep for some seconds in applicationDidFininshLaunchings method

example: sleep(3)

Answer 5

The simplest way to do this is to create a UIImageView who's image is your Default.png. In your applicationDidFinishLaunching: method, add that image view to your window, and hide it when you'd like your splash screen to go away.

Answer 6

Even though it is against the guidelines but if you still want to do this than a better approach rather than sleeping thread will be

//Extend the splash screen for 3 seconds.
[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:3]];

this way the main thread is not blocked and if it is listening for any notifications and some other network related stuff, it still carries on.

UPDATE FOR SWIFT:

 NSRunLoop.currentRunLoop().runUntilDate(NSDate(timeIntervalSinceNow:3))