I have a very strange behavior in my ios app, if I go to the storyboard and delete the UIImageView object and then run the simulator it still show the image.
Any ideas?
I know why you don´t believe me, I didn´t beleive it either when I saw it, but I just found what(not why) was hapening: the problem was that I messed with the main storyboard configured in the project->info, somehow it was calling the old storyboard and i say somehow because there was no file with that name, it was not enough to change the property to the actual storyboard file, I needed to create a new one.
i am making a very complicated app with a lot of classes.
my app worked great and i worked on it for the last month.
the last time i worked on it i added a function and it worked great, i saved the app and ran it a few times since and it worked. the last time i turned my computer on, it prompted me that an update for xcode is available. i updated it, and since then every time i run my app it runs with no errors but on ios simulator it shows a black screen. what can i do? i worked really hard on that app. thanks for the help in advance.
There's few issues that could happened, withou detailed description of this issue, you can try following solutions:
reset simulator
check if your initial controller is set up in storyboard(select controller and press attribute inspector, select is initial view controller):
if you're setting initial view controller programmatically, check if that controller is not nil in app delegate
another tip - try to use UI debugger, that helps a lot:
Any debug messages in the Xcode output? That usually will give a clue.
One thing I can think of, is that in your
- (void) applicationDidFinishLaunching:(UIApplication*)application
delegate, try setting the window's root view controller to your view controller. Example:
[window setRootViewController:viewController];
[window makeKeyAndVisible];
Again, the Xcode debug output will confirm if this is indeed the case though.
I have noticed that if I change an image in the xcassets, the launch storyboard does not update.
For instance, let's say you have a UIImage view in your launch storyboard with an image called "logo" that is blue. If you open up the in the Finder and change the color of the image to red, next time you run on the device the logo will still be blue.
The preview of the storyboard in xCode will show the correct (red) logo image.
Before running, I have tried:
Cleaning the Project
Deleting Derived Data
Deleting the App
Renaming the Image
Nothing seems to fix the problem. Is there another option that I am missing?
Appears to be a problem with caching on the device. Delete your app, restart the device, and pray. Image does not update when changed if that image is used on LaunchScreen.storyboard
Exiting out should normally solve the job... Sometimes, especially in the playground I have heard and experienced, it will not automatically refresh and you can either:
Wait a tiny bit(in most cases) but it seems you would not be asking if it were a few seconds of delay so maybe try
Deleting everything associated with that image(the outlet reference, image on storyboard, and any time you use that image in you code(leave those spaces blank)), then create a new UIImageView and assign it to your desired image.
In your Images.xcassetts file you may have only changed the info on one of the sizes; make sure those are all set.
Then again, especially after the most recent WWDC, there have been some bugs in Xcode that will need to be patched in the future. At the least, I hope this helps you and people who view this in the future.
I tried deleting the app from device while also deleting the derived data and cleaning, but it seems that you have to restart the device. That is the only thing that worked for me.
I add 3 UIImageView objects to a MainViewController.
For each of them add the same image "test.png".
The images display correctly for each of the controls.
Close the MainViewController and reopen it.
You get an error displayed saying "The MainViewControllre" has 3 internal inconsistencies that were found and repaired.
The details for the message indicates that there are resources with the same name.
Although the images still display correctly and the program executes in the simulator I would like to solve this message.
This seems to be something that was introduced in XCode 5.
Sounds like you might be using StoryBoards for setting these images? I remember hearing about this issue a few months ago. Check out this SO post:
Storyboard Internal Inconsistencies
Seems like it may have been a bug in an early release of Xcode 5. The correctly marked answer here states updating to Mavericks and Xcode 5.0.1 fixed the issue. Also, if this in fact the problem, and you can not update for what ever reason, removing the storyboard references to the images and adding the image to the image view programmatically may solve your issue. Trivial example, but just in case you (or anyone else reading this) doesn't know:
[imageView setImage:[UIImage imageNamed:#"imagename.png"]];
I had got an iPad application.The ViewContrtoller.xib has got an UIImageView in it. The UIImage of the UIImageView is set through Interface Builder. When I run the application in simulator everything is fine. But when I am trying to run it in iPad the UIImage is not loaded. The message that I am getting is:
HexaPuzzle1.0[3259:207] Could not load the "start.png" image referenced from a nib in the bundle with identifier "com.yourcompany.HexaPuzzle1-0"
2010-12-17 10:57:27.221 HexaPuzzle1.0[3259:207] HexaPuzzle loaded
Any help would be appreciated and will be a great help for me.
The issue has been rectified.
Problem was with the image format. When the image has been edited and saved as PNG-24 everything goes fine.
The application now runs smoothly in simulator and device.
Thanks for all friends who suggested a solution and tried to helped me.
Regards,
Rupesh R Menon
I know it's very late, but this is a solution that also works in Xcode 5, and therefore likely to be useful to people who have this problem in the future.
I have seen a lot of questions like this on the web but none of them seems to have one clear answer. This is, as far as I know, the solution for this problem:
Go to the image in Xcode (no need to re-add or re-generate the
image)
click "show the file inspector"
Make sure the checkbox in the category "Target Membership" is checked. the test check box does not have to be checked to make your app load the image.
The target membership tab looks like this:
if this is already the case, you are working with a broken or damaged file. to rule this out, check if another app (like photoshop) can open your image.
This should do it, hope it helps!
When dragging your start.png file into your project, did you check this option?
I was getting this error in the simulator after upgrading to Xcode 7 / iOS 9 and opening an existing project. The image was present and named correctly, within an XCAssets package.
Turns out the problem was with a parameter within the XCAssets package.
Changing Render As from Default to Original Image solved the problem:
I've had the same problem before. The png file format is not right. Try re-generate the png image file and the problem will be solved.
None of the above worked for me, and the message I got was "could not load the "(null)" image referenced... which means I could not look for the image. Very frustrating. In the end it became a trial and error exercise of going through every xib and storyboard looking for potential conflicts. I finally found it - I had specified a "Selected Image" for a tab bar item which was not needed. As soon as I got rid of that the problem went away.
None of these things work for me. I created a new folder in the projects where I placed the pictures. That worked for me.
This problem was fixed when I changed "add folder reference..." to "add group..." when I import the images to my project. I'd prefer to have folders with live updating, but at least it works now.
Had an image on a XIB (which is replaced by the correct one in code). After finishing this XIB, I renamed the images. So XIB was now referencing a non-existent image.
There is also another potential cause of this problem: If you upgraded to XCode 5 and use both the image asset catalog and "normal" images copied to your project (like you did prior XCode 5). If you then have images with identical names (e.g. "dog.png" and a image set called "dog") it might work in your storyboard and in the simulator, but you'll get this message when run on a real device (where the image will not be shown).
Try moving the images directly to the Resources directory (not in a sub folder)
Make sure the resource isn't too big to be handle.
If you get the error message with the name of the picture, you can search it inside your project and xCode will display immediately the UIImageView with the wrong picture inside UIStoryboard:
Make sure it is included in your Target Membership
Select your "Images.xcassets" file in the file Inspector
Open File Inspector (cmd + opt + 1)
Select your target membership (Usually 1st line)
I had the same problem, but the cause was very different. I was using image sets in the Asset Catalog that varied based on the device idiom: iPad or iPhone.
The framework target they were being added to had been accidentally marked as as having a deployment device type of iPhone, so the images weren't showing up on iPads - they weren't even being copied into the .car file in the framework.
Setting the deployment device type to Universal, as it should have been, solved the problem.
For some reason I was getting error until I put the image in the Assets.xcassets