There is a weird issue with an iOS app. Initially there were no modifications on the Launch screen and the app started just with a white screen. Now the launch screen has been modified with black colour and an UIImageView in the centre, showing a png image. After that there is the Initial Screen that shows an animation for 1.5 seconds and then another screen is shown. Let's call it screen X. Before the modifications to the Launch screen Screen X was the initial screen of the application.
The issue is the following. On start of the application often instead of showing the Launch Screen first, Screen X is shown. Then after about a second the Initial Screen shows with the animation and then Screen X again. We tried deleting the app and the issue disappeared for a while, then reappeared. Is this some kind of caching? What could be happening?
If the proper Launch Screen isn't being displayed, and you've already uninstalled the app, restarting the device usually fixes it.
I'm trying to get my app's splash screen to be displayed correctly instead of a black screen for a few seconds before the splash screen. I have made 3 implementations of the splash screen; issues with each are listed below:
XIB: This only displays the background color of the splash screen for a few seconds and then the rest of the splash is loaded.
XIB + Asset Catalog: For iPhone 5 running iOS 8: if the phone is currently displaying the blue navigation bar and the app is opened from a url while in the background, a black screen will be displayed before the splash.
Storyboard: On all models: this displays a black splash screen before the actual one loads.
Is this an iOS bug or am I implementing something wrong?
You might want to check the logic that is executed when the application is launched - application:didFinishLaunchingWithOptions:. If it takes significant time to execute the code in it, then this might be the problem. It is always recommended to return fast and execute any additional logic on a later moment.
It's so quite simple! I had such bug and I solved it.
You should enable "Enable Initial View Controller" to see splash screen
The app has portrait as default orientation within Unity3D. Using the app, nothing goes wrong and rotating the device does not affect the GUI and others.
Using native sharing we first get the sharing window with the "More..." button.
If the user presses the "More..." button while holding the device as horizontally, the new window shows as landscape and the whole app rotates behind. Doing the invert process totally screws the app. We are using Vuforia and the camera feed goes upside down before turning black.
The "More..." button seem to call for a new activity that seem to ask for the current rotation and (for some unknown reasons) also would send a message to the app about the new rotation.
Can I prevent that?
I am observing a behavior. I am not sure if it is a normal behavior or not. My steps are as below :
1) start application by pressing application icon. it shows me launch image first and then displays rootviewcontroller.
2) I press home button. and my application goes in minimize state.
3) Now I change the orientation of the iPad and again tap to application icon. It again shows the launch image and then loads the rootview. If I do not change the orientation then it does not shows launch image next time I open the application.
Any suggestion or direction will be thankful.
When I load my iPhone app it always loads a black screen first then pops up the main window. This happens even with a simple empty app with a single window loaded.
I've noticed that when loading, most apps zoom in on the main window (or scale it to fit the screen, however you want to think about it) and then load the content of the screen, with no black screen (see the Contacts app for an example).
How do I achieve this effect?
Add a Default.png to your project. This should be the image you want shown instead of the black launch screen.
Also just to save you some time, there is no way to change this image during the runtime of your application. If you look at Apple's Clock application you can see how depending on the last state of the application, the Default.png changes. You cannot do this in your own app because of permission limits. Also, make sure to read the iPhone HIG for best practices on Default.png use, in short, dont use it as a splash screen like Twitteriffic.
You can also take a screenshot of your app as an aid to creating the Default.png - while holding the Home button, press and release the Lock Sleep/Wake button. The screenshot can be find in your Camery Roll library in the Photos app and can be synced back to your desktop.
When the app transitions from the launch image to the actual app content, it should not be jarring to a user - content (text/images) can be added to the screen, but content should never change. If all this leaves you with is an empty blue header, a white body, and a blue footer - then that's all you should have. If you have a persistent tab bar on the bottom & a localized app (different text descriptions), then then launch image should appear with icons but no text. (See Clock.app & Facebook.app for examples.)
Screenshots can also be taken in XCode using the Screenshot tab in the Organizer window and a plugged-in device.