I'm using the release version of xCode 8 and am trying to run my app on the simulators. They are all the iOS 10 simulators.
No matter which simulator I use, when I run the app the app icon shows up in the simulator but then that's it. The app never displays in the simulator. I only see the app icons of the iOS home screen.
I put some break points in my initial view controller at the viewDidLoad, viewWillAppear, and viewDidAppear methods. All of them triggered. So as far as my app is concerned, it is displaying on the device. I also get all the normal log output and networking calls happening just fine. It even shows the popups for permission to access the calendar and notifications. But my app is not brought to the foreground.
If I then click on the app icon in the simulator, my app runs normally. But it should be automatic when I hit run from xCode.
When I run my app on an iOS 10 device I get the same behaviour as all three of those view methods are called. However I don't get any of my normal log output. In fact I don't get any log output. However the app was already installed from when the device was on iOS 9.x. Not sure if that is a factor. But aside from the simulator issues, this is the bigger issue.
I've tried cleaning the build, deleting the app, I even tracked down the derived data folder and deleted that from the simulator. None worked. I also updated all my cocoa pods I have installed too.
Any one else experienced this?
That sounds weird but I read a lot of threads on the Apple Developer Forums on the same problem during the different Xcode 8 beta version, try these steps:
reset the simulator using the menu "iOS Simulator" -> "Reset Content and Settings..."
remove your 'xcuserdata' directory inside your .xcodeproj directory
do a clean build folder (hold down option key when selecting clean)
reboot your Mac
If these steps don't solve anything you can try this solution:
Copy-paste Xcode-beta.app from Applications folder to somewhere else, e.g. - Documents folder.
Delete Xcode-beta.app from Applications folder.
Move Xcode-beta.app from Documents to Applications folder again.
originally posted here, obviously using your Xcode.app instead of Xcode-beta.app.
Since updating to Xcode 6, I see this warning every time I run the app on the simulator. My app has a routing app coverage file and I want it copied to the simulator but it's not happening. This seems like it might be a bug. Is there a workaround?
I had a similar error some time back, because XCode may be using a precompiled version of the app.
This is how I solved it:
In xCode, make sure that your app isn't running in the simulator (click the stop button), then
Build menu > Clean target or SHIFT-CMD-K.
Additionally, clean the content in the Derived Data folder ~/Library/Developer/Xcode/DerivedData/.
Hope it works for you.
I have a working app in Xcode, however when I try to build and run it the simulator displays an older version of the storyboard I was working on. I had changed some of the design on the storyboard but this does not reflect in the simulator, nothing is updated.
Does anyone have any ideas?
Delete the App on the simulator.
Clean
List item
Build & Run
Use NSLog(#"") in your controller to check code execution.
I just spent at least 6 hours on this. I have a solution, but I also submitted a technical support ticket to apple to try to get more info on the cause and proper solution.
Simply remove the references to your storyboard files and add them back in the same file group.
This seems to include the storyboard files back into the app bundle generated during build(which can be seen in the
DerivedData/APPNAME/Build/Products/Debug-iphonesimultator/APPNAME.app
From here I can see my changes reflected from the storyboards as expected.
PS - Are you using localization at all? I was.
I lost 2 hours to this.
Solution was braindead simple: delete app, turn OFF the iPhone 5S (iOS 7.1.1), and turn it bavk on.
When you turn on localization,
xcode moves storyboard file in localization folder (ex. Base.lproj/name.storyboard). When you build and run project on simulator, xcode copy name.storyboard into "derivedData"/Base.lproj/name.storyboard, but previous, created before localization "derivedData"/name.storyboard still exists. In this case simulator uses the file which can be found easier, i.e simulator uses old file "derivedData"/name.storyboard to operate.
Solution: Just rename the storyboard file, in navigator and in targets/general.
This error happened to me for the first time when I had multiple copies of a project on my computer. For whatever reason, the fact that there were multiple copies were making it look as if the storyboard had not been updated between copies and in some cases the code was not updated. I thought I had forgotten to throw the right copy on my flash drive before going home, but it turned out it's an XCode error.
Delete any multiple copies using the same name, restart XCode and open your most recent copy. Extremely bizarre, but I will probably use BitBucket or GitHub from now on instead of throwing it on a flash drive.
Deleting
~/Library/Developer/Xcode/derivedData/
worked for me!
I just have the same problem after localizationMy solution is clicking Product, Clean build folder. Then it will be fine
The storyboard on the simulator was what it should have been. The storyboard on the device would not update. I had to delete the application from the iPhone and then re-run it on the device in order to get the Storyboard to update on the device. Fortunately for me it was only test data, but I was using Auto-Layout on one view and went back to manual. I think that's what caused the issue for me.
I find that removing and adding storyboard file back doesn't work in my case, also it has side effects like it will automatically add a main nib entry into App's plist file (which subsequently makes the App fails to launch in iPhone simulator).
I don't want to try to delete the application from the simulator since I have many files under the Document directory of the App.
At last I find another way that works well: simply delete the "/Users/$username/Library/Application Support/iPhone Simulator/7.1/Applications/$app/$yourapp.app" file. The files under Documents directory are untouched.
(I have localized my storyboard as well.)
I found this same thing happened with Xcode 6.1.1 if I happened to have copied a project; the new project run in the simulator was actually still reflecting the old, original project.
In my case the problem was with how the default area was set up for derived data (essentially the location where the binary files go for a build). Mine was set to legacy and the simulator was using the wrong project, even after a clean. The solution was to go to Preferences->Locations, press Advanced, and change the location from Legacy to Unique.
I get this too when using localized storyboards - Run in Xcode just refuses to install the latest version of the compiled storyboard. I think it is something to do with the way Run copies changed resources across to the device - it does it differently than other forms of on device app installation.
The quickest way to get past this without deleting the app and losing any data is to:
Generate an Archive build in Xcode
Export this for Adhoc deployment
Double-click on the generated IPA to add it to iTunes
From the device page in iTunes force an update to that app
In order for iTunes to see that you have a new version your app build number will need to be incremented (if you don't do that already), before generating the archive.
I find this method means you don't have to delete an app off the device, you're just forcing it to install the entire install package rather than a diff which is what I think Run is doing.
I'm not sure what causes this, if it is a localized resources bug or what, but this is still a problem in Xcode 7 for me.
So, it started as a simple test, where I had to delete my app from my iPhone (iOS4.3) just to check how the app behaves on a first run. (I am developing to support down to iOS4.3).
After the deletion, I wasn't able to run the app on my iPhone for some reason. The "Active Scheme" would show iOS Device, although I could manually select my own device from the list, the project wouldn't set my device by default. XCode would drop a message from the top saying:
Could not launch “project1” No such file or directory
(/Users/portal/Library/Developer/Xcode/DerivedData/project1-
cfjhjgezzcapwoadaivpptyywptu/Build/Products/Debug-iphoneos/project1.app/project
I went through this SO post (EDIT: Therefore, restarting XCode, iPhone doing clean project, hard resetting my iPhone) but this didn't change anything, except I can now delete the Derived data in Organizer.
I have a working backup at hand though. Thing is it is a bit outdated as I made many changes to the project. I can run the backed up project, and it seems sane as good.
Now my question is how can I merge the files back into the sane project? The XCode project itself has changed a bit, frameworks were put in as well as some settings.
I tried to simply copy the changed files into the old project, but all I get is a SIGABRT upon the first run. I did a FileMerge look, and saw that for some reason my projectAppDelegate.m is non existant in the PBXBuild section of the .xcodeproj file. which I didn't touch. seems like a mess here.
How can I merge the new project to the old one correctly?
I couldn't find any results in google, so i hope someone has a solution for my problem:
I changed the name, App icon, "splashscreen image" of an existing app in xcode and all of them are shown correctly on the ipad simulator 4.3
If I start the app on my ipad iOS 4.3.5 the App icon is changed but the text under the App icon and the splashscreen is the old one. How is this possible?
There aren't any images of the old splashscreen in the project folder.
I deleted the old App from the iPad. Restarted the iPad several times with no luck.
Delete that app from your device. (long hold of icon and then hit the X)
Connect to Xcode
Clean
The build and run on your device.
The resources on the device are probably lingering and not being replaced when you rebuild it.
This link gives detailed information about launch images
http://developer.apple.com/library/ios/#documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/BuildTimeConfiguration/BuildTimeConfiguration.html%23//apple_ref/doc/uid/TP40007072-CH7-SW11
For your situation you'll need is a file called Default-Landscape~ipad.png in your bundle if your app universal.
Was your app iPhone/iPod specific before?
To change the name of your app, try adding a key to your Info.plist called CFBundleDisplayName~iPad with the name you want. I'm not certain this will work mind.
Normally, images that work fine in the simulator but not on the device are caused by capitalization problems. The simulator won't be case sensitive, but the device will be. Check the filename against how you refer to it in code (and/or the standard names that you need to use, e.g. "Default.png" with an uppercase D) and make sure both match.
A Clean and rebuild might also help.