In iOS, I have a LaunchScreen.xib file displayed on startup. If the user touches the screen while the splash screen is displayed, I would like to advance immediately to the first ViewController. How do I recognize the touch?
From my experience, the Launch Screen time cannot be shortened, which is what a "tap" would do. This is the time it takes for the app to initialize on the device, and it varies based on the processing power of the device.
I would suggest creating a VC that looks identical to your launch screen, and then have it load right after the launch-screen. Then, you can have the user tap on that VC to advance to your current first VC.
Related
I have used the LaunchScreen.storyboard file in my swift file to create a launch screen, however I only see the launch screen when I load the app onto my phone. After that, even when I kill the app I don't see the launchscreen again. I want it so that it shows every time the app is booted, so after it's been removed from the background like most other apps that exist. I there a setting that i need to toggle, or am I doing something wrong?
What you want can be achieved from the initial ViewController instead of Launch Screen.
Reason: Launch Screen timing is not fixed and can have a very short appearance if the app has recently been in the memory.
I would recommend you to use the welcome graphic/animation on the initial View Controller and move to the intended View Controller after a set timer by using a segue.
Edit: Additionally, in case of a graphic, you can put that on the Launch screen as well, then on the initial View Controller. That will get you continuity.
Hope this helps.
Looking to see where the best place to call some endpoints for initial data is.
In some apps (mostly games) there is a loading screen before the menu. Is this the "Launch Screen" or is it a view set up during viewDidLaunchWithOptions, or is it simply an initial view?
If my searching was correct, there is no way to "perform logic" during the launch screen. So are apps that have a loading screen simply not using a launch screen and just setting up their own loading screen (which appears as a "launch screen")?
You can't execute any code in the launch image or launch storyboard scene, as it is displayed while your app is loading and before it has started executution.
A common approach is to create the first scene of your app to be identical to the launch storyboard scene, so that the transition between the launch image and the initial scene is seamless. You can then perform the loading in the initial scene, while providing appropriate feedback (spinner, progress bar etc)
Mostly it is recommended to use Launch screen Because if your first screen which you are using to shows animation takes long time to prepare itself then user will see white screen. And then perform animations on app's root view controller which always appear at app launch.
does anyone know if there is a way to tell if the launch storyboard executed? Or is there a way to detect if the launch image was displayed?
Basically my app consists of just one view controller with some views (all created programmatically), plus the launch storyboard which I added to the project recently which seems to be working OK.
The reason why it would be useful for me to know if the launch storyboard happened is that my app is a game which basically consists of a big 2D scene that you can zoom into and pan around using the usual touch gestures. When the game starts for the first time it starts fully zoomed-out and centered on the scene: so that is what the launch image matches. But the player pans around and zooms-in on various things, so when they press the home button they could be zoomed into any part of the picture. So when they touch the app's icon to relaunch, if the launch storyboard happens it needs to put their pan/zoom position back to the initial centered zoomed-out position (otherwise as soon as the app gets going it would appear to the user to suddenly snap from the initial position represented in the launch image to where they were, not giving a smooth user experience).
What I do at the moment is -- if applicationDidEnterBackground: method gets called I assume that when the user relaunches the app, by touching the icon, that the launch storyboard will be executed. But the launch storyboard doesn't always happen after it hibernated via applicationDidEnterBackground:, especially if it is only a few minutes since the user pressed the home button.... and those times when the launch storyboard does not happen I need not inconvenience the player and put them back to the initial zoomed-out centered position, I could just let them carry on at the position they were.
I've not used storyboards before, but as I understand it launch storyboard are a special case where you can't make any connections to code because your app's not actually running yet, so I can't think of a way to set a variable, for example, to show the story board happened.
Anyone got any ideas?
Cheers,
Jon
Just use the viewDidLoad method provided by the UIViewController.
Just override the method in your ViewController and then you can perform the task you want when your View(Storyboard) is loaded.
Example:
#implementation MyViewController:UIViewController
-(void)viewDidLoad{
//Insert your code here
}
#end
I want to animate a set of images in my Launch Screen, but I do not know how. I have seen some tutorials telling me to put code in the App Delegate (DidFinishLaunchingWithOptions) and nothing has worked.
Could someone help me animate my Launch Screen?
I am supposing that you do quite a bit of work on launch, and you do not want your user to stare at a static image while this work is going on. What you need to do is do the work in the background (using gcd). This way, the launch screen will be gone quickly. However, you are not ready of course: hence your need for animations. So what I do is add my own equivalent of the start screen on top of my first visible UIView, do my animations and then tear down my start up screen. If you want to see what I do in action, try it out with my App (The Opera Player)
My issue is with the splash screen shown when the app opens while in suspended mode.
When the app is closed and i open it, i see the Default.png splash screen, which is what i need.
But if i send it to the background and reopen it, i see a snapshot from the last screen i was in, and i want to see the splash screen.
I have even considered forcing the app to quit on when entering background, but i'd rather show a snapshot than do this.
How can i accomplish this?
Thank you.
You can't change the image that is shown when the app starts (Default.png) or enters the foreground (snapshot of previous app state).
Ask yourself, how would showing a splash screen each time the app enters the foreground improve the user experience?
Edit: Here's a guess at a workaround:
Based on your comment below, it sounds like you're saying it would be OK if the user always came back to the main action screen. In the applicationWillResignActive: method, could you check what screen the users is on, and if it's not the main action screen, move back to that screen... the snapshot would be of the main action screen then (maybe!)