UIImage view is not showing in iOS 11.....How to solve? - ios

I have an existing project in iOS, it was working fine with till iOS 10,
After updating X-Code 9 , and run the project iOS 10 it is fine but in iOS 11 the UIImageview is not showing ..
I have already tried so many ways like clean derived data, reset clean build with quit x-code and restart system, remove and add image(png file), but noting happen.
Even i have added the background colour but the colour is also not showing in the device and simulator but it is in the storyboard .
one more thing ,,, the background image on UIButton is showing but on the image it is not displaying.
Is any one find solution ?

Kindly Debug through View hierarchy and Check Image Alpha Value. Remove This line of code from your project if not necessary -
[super setAlpha:0];

Related

UIImageView disappear for Xcode 9 and iOS11, working fine for below iOS 11

One of my iOS project is working fine for iOS 10. But when I run same code on iOS 11 Simulator build with Xcode 9, all UIImageView's images of my projects is not showing on simulator and device too, Background image on Button and cells are showing but Normal UIImageView is disappearing from Controller. Even it's not showing Background Color on that Image View.
What I did to resolve above issue are mentioned below:
Clean Build Uninstall App from simulator,
Cleared Derived Data and Archives
removed and added images again with copied target.
Added images in Images.xcassets with all three sizes.
Removed auto layout/Constrains and also added Auto layout/Constrains to check above scenario.
Created a fresh View Controller and added images and also added background color on that, its showing in Storyboard but when I run the Code its dis appears from Simulator and also from device.
All above mentioned points or solution are not working in my case.
check this image for Debug View hierarchy: And I am assuring, images on that ImageViews are copied to target.

iOS 8.1 image display

Having a weird problem and can't find anything after over an hour of searching.
I am using Xcode 8 but also experience the issue when using Xcode 7 (I copied the project directory and tested in Xcode7 - I am working in Xcode 8 and created the project in Xcode 8, I only did this for testing purposes) to run the project in the simulator. I have no code in the view controller at this point so I know the problem is not related to code.
I have a simple view created in a storyboard but when I run it on any 8.1 simulator or device the logo appears stretched/skewed.
The original image is below:
I have created this simple placeholder image to make the point, originally I was using our company logo - so I know it's not an issue with the image since this one was just created.
I have tried removing all constraints from the image and just using width, height, and position constraints but the issue still persists.
Has anybody seen this happen before? What do I need to do to fix this?
you may change the uiimageview's view mode to "Aspect Fill" or "Aspect Fit" in the utilities area .
Check this

iOS Xcode LaunchScreen Storyboard not displaying

I'm trying to use Xcode's LaunchScreen storyboard as my launch screen? All the questions that have previously been asked about this refer back to the old launch image or .xib method - trying to do it now with the new LaunchScreen storyboard that Xcode automatically generates instead. I've selected the LaunchScreen storyboard as my launch screen file in my Deployment Info:
The storyboard itself confirms that it is set as the launch screen in it's file inspector.
And the info.plist file reflects this as well.
And yet, it doesn't work. The LaunchScreen storyboard never shows - it just goes straight to the first screen in my main storyboard. Using Xcode 7.2 and deploying to iOS 9.
Enable these two settings for the LaunchScreen.storyboard
If you are using xcode 11.2 you'll need to remove the app and execute it again to see the launch screen. I have to do this every time I modify the launch screen in order to see the new changes.
Another thing to make sure is that Launch Screen File is set to Launch Screen.storyboard
**Delete the app from the device. Re-run. **
In my case I had all the suggested settings set correctly but continued to have the original blank launchscreen. In the spirit of AmJa's suggestion regarding a "cache" problem, I deleted my app from my device and reinstalled. Reinstalling did the trick for me on both my devices and simulators.
In case anyone else runs into this issue, I resolved it by simply deleting the ViewController on my LaunchScreen storyboard (leaving me with an empty storyboard), creating a new ViewController and resetting the Storyboard entry point to that new ViewController. There may be some sort of bug with XCode 7.2 with respect to the LaunchScreen storyboard and default entry point into the auto-created View Controller, but then again, I've tried replicating this 3 times and it hasn't ever repeated itself, so maybe not.
In storyboard, in ViewController scene, I had to check Is Initial View Controller for storyboard to be seen as Launch Storyboard.
Suprisingly this is not checked when you add first View Controller. Xcode 11.
Just in case it helps someone.
Scenario, I created my new project and copied a old Launch Image from another project. And then started getting the launch image but when I wanted to change it to new image then still i was viewing the old image it was stuck for ever as launch image no matter what I do.
Then I reset my Simulator and restarted my iPhone and there you go I stared getting the new image. This looks like that somewhere in the documents or cache the devices store the old image until you reset the phone.
Thanks
As #abanet, mentioned in his answer, anyone who uses Xcode 11.2 and above, they have to delete their app and launch it again to see launch screen changes. It's not reflecting immediately. It looks like a bug from Xcode definitely not an intension.
How to fix for Xcode 11.0 and above:
Do this: https://stackoverflow.com/a/41287094/2190175 if you haven't already, and after that:
Delete app from device / simulator
Restart device / simulator
Reason: Launch Screen part of storyboard is cached during development and doesn't change until you remove app from device / simulator and reinstall it completely.
Other solutions didn't work for me, but this did:
Toggle on and off Device Orientation (e.g. support Upside Down) and Hide Status Bar in General.
I'm not sure which one did the trick, but it's working now.
If you don't see anything and your Launchscreen.storyboard only has an ImageView in it, then it might actually be showing the storyboard but not the image. Try putting a button in it or something. I've discovered that my Launchscreen.storyboard is actually showing but won't show any images and I don't know why.
The issue can be also that the "LaunchScreen.storyboard" is not added to this target.
To fix this open "LaunchScreen.storyboard" then press on "File Inspector" and under "Target Membership" add it to the needed target.
I tried everything mentioned here, the only thing that worked for me was creating a new LaunchScreen file. I'm using Xcode 12.1
(Don't forget to update the reference in the targets settings)
I was banging my head against a wall with this since Xcode 10.1 does not include a launch option for the new 11" iPad Pro when you create a new iOS Launch Image set, and without it, the iPad Pro doesn't display correctly, leaving me no choice but to get this working with a Launch Screen storyboard.
I tried combinations of so many things, but I wanted to post what ended up making it work 100% of the time (which was, in fact, a combination of a number of things).
As you have no doubt read, for the UIImageView within the Launch Screen storyboard, you should NOT include the extension (.jpg or .png). So many posts say that, but leave out that the reason is that you should create a new image set within Images.xcassets (NOT Launch Screen image set, but just image set) and name it whatever you want (for instance, "Launch-Default"). Then, drag and drop the desired .jpg or .png into the new image set. You will then use the name of that image set within the UIImageView in the storyboard and everything should work fine (the image should even show up inside of Interface Builder).
Also, within the General settings for the project, make sure to set the Launch Screen File to your new storyboard.
You need to add App orientation specific Launch Screen.
LaunchScreen Portrait: https://app.box.com/s/hfoeuvsy68iu913keb8p5hs1z9fdz3jk
LaunchScreen Landscape : https://app.box.com/s/o9q5nkrvk2ewdh57oiiar85zf658olgj
Drag LaunchScreen.storyboard & LaunchScreenBackground.png to Xcode sidebar. Then specify LaunchScreen in Xcode General page. See attach image
In my case, the problem was that the image for the logo was taken from a different target. Make sure that the image is from the main target of the application, and reset the simulator via menu Device/Erase All Content ad Settings...
In my case a few image views cover the whole parent view of the launch screen (e.g. pinned to the view edges). I had to uncheck the Resize view from NIB in the Attribute inspector for the launch storyboard and finally it worked for me (just do not forget to manually delete the old app from the simulator)
In my case the background color of the view (full screen) was set to a "missing" color literal! After trying all above of course ;(
A jpg image does a problem change the extension to png or use another png image
Worked like a charm for me
in xcode9 swift4 LaunchScreen storyboard, use .jpg image & uncheck clear graphics context for imageview. it's absolutly working.

Image view appears for a few seconds then screen goes white

If using the latest Xcode 7 (Xcode 7 GM seed) I perform these steps:
1) Create new project / single view application
2) Disable size classes
3) In the storyboard add an image view as a child of the main view
4) In the storyboard provide an image for the image view
5) Run on a device with iOS 9
When the app launches the image is displayed for about 2 seconds, then the view goes white.
What's going on? I literally have done nothing other than the 5 steps above. Why is the image initially appearing then disappearing.
This is 100% repeatable, I can create any new project, add a image view, same effect.
Bug with Xcode, iOS 9? Surely this would have been noticed by now, 7 & 9 are both advanced now. What else then?
[And for any overzealous jobsworths out there, no I don't have any code to post, I haven't written any, its all boilerplate]
I found the problem:
When you create a template project with Xcode 7 in addition to the Main.storyboard file there is also a LaunchScreen.storyboard file created.
I didn't realize - I just saw the .storyboard extension and didn't see that there were two.
So what I was actually doing was adding the image view to the LaunchScreen.storyboard and not to the Main.storyboard.
Doh.

UIImageView missing images in Launch Screen on device

I have an app that supports iOS8 and later, built in Xcode 7 and I am using a XIB for a Launch Screen (I do not have launch images). The view contains a single UILabel with the app version, and 2 UIImageViews with images that are both present in Images.xcassets: A logo and a splash image.
The UILabel and the logo image appear correctly when I launch the application, but the splash image does not if I run the app on an iPad Air 2 with iOS9. I have tested on an Air and a Mini running iOS8, and iOS9 simulators for iPad 2, iPad Air, and iPad Air 2 and the image appears correctly in all of those.
I ran some basic troubleshooting to see if I could figure out what is going on but I haven't been able to solve it and the only difference I can see between the image that's working and the one that's failing is when I added it to the assets...
Here's a rundown of what I know:
The UIImageView for the splash image is in the correct place, at the correct size. I can tell this because I set its background color to green just to make sure. The view is there, but the image does not appear. So I'm assuming that the view is not to blame.
Setting the UIImageView for the splash image to also use the logo image makes the logo image appear in the correct place for the view. This also leads me to assume that the view is not to blame.
The UIImage that I am using in the splash image view is used elsewhere in the app and appears fine in those other views (the logo image is also used elsewhere in the app and appears fine). So I'm assuming that the image is valid and having it appear in other views is not a problem.
I've confirmed that the settings of the UIImages for the logo and splash in the xcassets file are the same. They are set to Universal, Any width and height, multiple scale factors, rendered as default. There is one difference - the logo has 1x, 2x and 3x scales while the splash image only has 1x and 2x, but I have also tried using UIImages with only 1x, and 1x and 2x values in the UIView and they work (if they were added to the project some time ago).
Adding another image of a different size or format (PNG and JPG) to my xcassets and using that UIImage in the UIImageView for the splash image also fails to display.
Adding another UIImageView to the XIB file and allocating it a UIImage that was already in the xcassets works, the image appears in the loading screen.
Copying and renaming the image files used for the logo and adding them to the project then using that UIImage in the splash view also fails to display.
I have tried cleaning the project, restarting the development machine, and deleting the app from the Air 2 and reinstalling it just in case that was a problem.
These last three steps lead me to believe that there's some issue with images added after a certain point in the project file's lifetime. While I updated to Xcode 7 yesterday, the splash image was originally added in Xcode 6, but the logo image (also added in Xcode 6) was added some months before.
I've looked over the json files for the logo image and splash image and they appear to have the same format. I've also trawled through the pbxproj file looking for differences and I can't see any.
So I was wondering if anyone had any idea why the launch screen might not display these new images I'm adding on the Air 2 specifically? Other questions I've been reading through relating to images not appearing all seem to relate either to Launch Images, or to images in XIB files that have associated classes, neither of which seems relevant here.
Turn it off and then on again.
Seriously, restart the device — that’s what fixed it for me.
Here’s what didn’t work:
Cleaning DerivedData.
Cleaning the project.
Uninstalling the app from the device.
Restarting Xcode.
Restarting the computer.
Older observations:
Just like the others, it:
Works fine in the Simulator
Used to work on the devices (iPhone 5S, iPad Air)
No code changes (verified via git reset --hard HEAD), yet stopped working.
What I remember triggering the first build where it stopped working was unplugging the iPhone while it was runnning. (Not sure if it’s related.)
However, the git reset not fixing it (combined with all the clean steps not working) tells me it this must be getting cached somewhere else. Quite possibly in one of the .gitignored files? (I’m using Git ignore file for Xcode projects)
One workaround that worked for one UIImageView (in the UIView that has three) but not for the others was putting the image into an .xcassets file. Reverting to the plain image file did not undo the fix. (Really feels like a caching error.)
UPDATE: See top — restarting the device is what fixed it. I get the feeling the wrong bitmap data is being cached on the device itself.
Radar: http://openradar.appspot.com/23534818
"The solution for me was simply to make sure that the "Clears Graphics Context" box is unchecked for the UIImageView in the storyboard. Just changing this fixed it for me."
No other solutions worked for me.
Got it from apple developer forum
I had exactly the same issue on an iPhone 6.
The very strange fact is that I was able to use another image from my images.xcassets which had the same size, compression, color space ...
I'm not able to find why it doesn't work but I found a solution :
Simply put your file outside your images.xcassets and use its full name (with extension) in Interface Builder
Hope this help !
The following sequence of operations fixed the issue for me on Xcode 7.3.1 and iOS 9.3.4:
Clean Your Build (⌘+⇧+K)
Close Xcode
Hard Reset iOS Device (Power + Home Button reboot)
Relaunch Xcode - let indexing finish and build on device once it is ready.
Many other answers suggest rebooting devices and / or rebuilding and / or reinstalling is the solution.
While these answers work for some of us, the reason these work is because the app is forced to "retake" or "rebuild" cached snapshots.
Cached snapshots are used by apps to present images before supporting data is loaded into memory, including the asset catalogue that contains storyboard images.
This SO answer by #jaga provides the solution, but not the reason, as to why UIImageViews are missing in the Launch Screen on device (but not in the simulator).
Background
Recently I attempted to use a custom font in my "Launch Screen.storyboard" file.
The reason I could not became clear after reading this SO answer by #TimCamber, which prompted me to do a little more research and testing.
The reason that a custom font is not included in my Launch Screen Storyboard file is the same reason an image within an asset catalogue is not included...
The app prepares portrait & landscape snapshots of the app's Launch Screen from your Launch Screen Storyboard file and (currently) saves it in your app bundle here:
/Library/Caches/Snapshots/<<app_bundle>>/ and
/Library/Caches/Snapshots/<<app_bundle>>/downscaled/.
This process is complete before any supporting files are loaded, including any custom fonts and the asset catalogue.
Solution
As mentioned above by following #jaga's solution, literally all that is required is to:
(old school) add an image file (.PNG) to your app's bundle (as you can see from the screenshot below I added the image file under the Supporting Files subdirectory in an Images subdirectory), and
reference that image in your UIImageView object in the Launch
Screen Storyboard file...
I was seeing the same problem. Rebooting the device (iPhone 6) and rebuilding the app to the device is the only thing that fixed it. I tried many other tips and suggestions but nothing else worked. Only reboot + rebuild helped.
My solution #iOS 11.x:
Use .jpg image instead of .png. I think image file size matters;
(Optionally) Put image file in project directory rather than .xcassets;
I had the same for app installed from TestFlight.
Delete app -> then restart iPhone -> then reinstall app works for me.
Just reinstall app or just restarting device didn't help.
What worked for me was to select Reset Content and Settings... from the Simulator menu
I was having the same problem, but restarting the device didn't help. What worked for me was deleting the UIImageView from my launch storyboard and adding a new one.
Have you tried turning the device off and on again? Do it.
Bring images out of Image.xcassets and add them again to project. It worked for me.
Remove app from mobile and then restart mobile and install app again. now the issues will be solved
I also had this exact problem in Xcode 7 with iPad and iPhone devices. Although it makes no sense, I was able to get around it most of the time by setting not only the Image but also the Highlighted image in the image view to the same image in my images.xcassets.
I use the iPhone 5s device, also meet this problem.
I fix it by :
Remove Drive Data
Clean the project
Restart Xcode
Remove the project from my device
Restart the 5s.
I think it's something wrong of Xcode to use memory, system may be allocate a little memory for Xcode cause Xcode drawing the lunch image failed (On my computer , Xcode have runned for several weeks without close)
it's worked for me.
First in xcode clean de project.
If you use the simulator, delete app and relaunch.
If you use a device, delete app and restart the device.
I think launchscreen only support image in Assets.xcassets.
Restarting Xcode did it for me.
What did not do it:
Clean build folder
Restart device or simulator (image wasn't visible on either)
Select the ImageView and then remove the image extension (.png or .jpg) in the attributes inspector tab > Image view > Image > Image Name.
On launchscreen.storyboard the image will not appear but it will be there in device. This worked for me.
It seemed a bug of iOS. Like sometimes the system animation disappeared.
Now I just reboot the iPhone and it is worked for me.
In my case I it was the image name.
I added an image named Default-568h#2x.png to LaunchScreen.xib - one of my old launch screens just for testing purposes. I was building on the iPhone X Simulator, the image didn't show up.
Changing the name to something neutral (MyImage.png) solved the issue.
It seems that the #2x was part of the problem as well as the -568h.
Which makes some sense on a -812h#3x device.
I have the same issue with imageView a launch screen storyboard. I removed reference of picture from project, I renamed my image and added it again to project. All works perfectly.
Also can 1. delete project image 2. change image name 3. add file image to project
It worked for me.
I had this problem in iOS 10 on an iPhone 6 and also in the Simulator. My image was in a folder and that seemed to be the issue. I removed the image from the folder in Xcode and put it in the project's base directory which solved the problem.
I experience the same. I change image resolution from 300 pixels/inch, change it to 72. It works for me.
Next helped to me:
change "Launch Screen File" to another xib
run the app
change xib back
Also very important: check that your is xib not opened in another tab, that can cause it as well!
I found a simple but radical solution that worked for me :
1 - Delete the file : LaunchScreen.storyboard and move it to trash.
2 - Product -> Clean
3 - Create a new launch screen file named : LaunchScreen.storyboard and put your images in it
4 - Save and build
That worked for me after trying complex methods for hours... It seems that my LaunchScreen.storyboard was write-locked and couldn't be saved or a weird caching process was blocking it.
This is too important
Must be empty! Launch Screen File
Image name is the problem.
Rename the image name used inside the Launch screen storyboard.
Make sure not to use any character other than alphanumeric ( don't use "_-&#")
Worked for me like a charm..
SOLVED!
The only thing that worked for me was deleting the ViewController from LaunchScreen.storyboard and create a new ViewController set to
Is Initial View Controller
Simple as that :)

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