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I just upgraded both of my Macbook Pro M2 to MacOS Ventura 13.0 and Xcode to Version 14.1 (14B47b)
After updating my xcode, my xcode is always stuck on "launching app" and simulator is on blackscreen every 2nd time I run the code.
Steps to duplicate.
Close the simulator
Build and run code
Here, xcode runs the code perfectly.
After I made changes in code and re-run the code, Xcode is now stuck on "launching app" and simulator is on blackscreen
To run the code again, I would have to go back to step 1 again to run the app on simulator.
Does anyone have an idea on how can I fix this.
I tried removing derived data, changing simulators but didn't fixed the issue.
UPD:
I know this is not a solution, but just paste this command to restart simulator automatically. Add Run Script at Build Phase section and enter command "killall Simulator":
:
Run Script command
We will wait fix this problem from Apple in a new version, but for now you could manually restart Simulator or make it automatically through Run Script.
And also I noticed that without restart app runs with black background and you can even swipe to Home Screen.
This is bug with the latest version. you need to quit the simulator and run the project again. You can always file a bug with apple as #matt commented.
Update:
I Have downloaded version 14.2 (14C18) and the problem seems to be fixed
Original answer:
I have the same problem. The only solution I have found so far is that if the app crashes it works fine the next time.
So i added a button to force crash the app in order to save me time for restarting the emulator.
I know this is not a solution but this allows me to continue development until apple fix the problem
The same problem I faced, close the simulator once you run the build without stopping running the code.
Same problem here: After first run of an app using XCode debug the simulator is just black. Killing the app does not help.
Debugging/running the simulator with XCode 14.1 was fine until I updated to Ventura, the problem started with the OS upgrade.
This did not work for me:
sudo xcrun simctl erase all
Manually resetting the simulator also did not work.
Only thing that helps at the moment is closing the simulator and starting it again.
I am using xcode 14.1 What I have done is as follows:
Quit the simulator & Xcode.
Open terminal and run
sudo xcrun simctl erase all
It will delete all content of all simulators. By content if you logged in somewhere password will be gone, all developer apps installed in that simulator will be gone.
Doing these resolved my issue. Hope it helps.
This question already has answers here:
Failed to Attach to Process ID Xcode
(37 answers)
Closed 4 years ago.
I just updated to Xcode 7.3.1 and my project crashes with the same error after the launch screen displays on the iOS simulator.
The error is:
"Could not attach to pid : “1712” unable to attach"
Then I tried running another project and I got:
"Could not attach to pid : “2025” unable to attach"
Any solutions?
Resetting the content and settings in the simulator worked for me. This is available on the iOS Simulator: Hardware -> Erase all Content and Settings
Kill the simulator, then re-build.
I closed Xcode.
On the simulator menu: go to Hardware -> Erase all content and settings.
Open Xcode then build and run the application.
The above simple steps worked for me.
Close Xcode & simulator
Reopen Xcode & rebuild
Above steps worked for me.
In my case Xcode 8.0 after this error,just rebuild again project it solves this problem.
There is no need for reset app content in iPhone device.
Clean the project,quit the simulator and then rebuild the app
While I am try to run an app in the iOS 10 simulator using xcode8 I get these alerts frequently. They randomly appear two at a time and it is not apparent what is triggering them.
Below is Image for Error I got.
I tried Following things.
Clean & Rebuild an app
Restart xcode & Simulator
Clear Derived Data & Rebuild application.
Even I was getting the same error. Issue in my case was I was working on xcode 7.3 and its simulator was open, later on I closed xcode 7 and opened xcode 8 and tried running app and got the above error.
I guess its happening because of both the simulator were open, it got solved when I closed my older simulator. Seem to be some problem while xcode 8 was trying to establish connection with simulator.
You just follow these steps to remove this error it's working fine in my side and i hope these steps work to you also just try it.
i)Remove multiple xcode versions.
ii)Quit all Xcode and simulators.
iii)Only one version you opened.
iv)Go to Xcode -> Preferences
v)Go to Location
vi) Set proper version for command line tools (your Xcode version)
vii)click on Derived Data
viii)Then go to Derived data and delete that folder. see below image
ix) Click on Simulator reset content settings and just quit xcode and simulator and open clear and build the xcode and run it.
Without deleting "Derived data" folder
The same rules as in the past apply to switching between Xcode 8 and
Xcode 9:
Quit Xcode, Instruments, Simulator.app, and Console
xcode-select the version you want to work with
Start the version of Xcode you want to use
If these steps don't resolve the problem for you, you can repeat the steps above > but after #2 add "sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService".
from this https://forums.developer.apple.com/thread/79301
The Same issue I have faced when I have two Xcode version, but the issue was when we are opening the two instances of simulator we will get the same error, the best way to solve this issue is run command
rm -rf ~/Library/Developer/Xcode/DerivedData
to remove the derived data.
None of the above worked for me.
Instead of choosing the simulator and hitting "run" i solved it by opening the simulator form "Open Developer Tool" menu first. After that all worked fine.
I had a similar issue, despite not launching a second instance of the simulator, due to using SimPholders and having the XCode Command Line Tools set to a different version of XCode. To resolve this, open up XCode preferences, and under the Locations tab ensure that the Command Line Tools version matches what version of XCode you're currently working in.
I had the similar issue shown in below screenshot.
Got it solved by closing Xcode 7 and its simulator.
It seems that when you are working on Xcode 8 and its simulator then Xcode 7 simulator should not remain open.
Below is screenshot of simulator state for Xcode 7 when you're working on Xcode 8.
In my case,
I was open a project a Xcode 8, and the emulator for this version, then open this project on Xcode 7.3.1, when I create an emulator it shows the alert.
My Solution: Close all version of Xcode => Clear Derived Data => Quit Xcode => Open Xcode => Choose File => Open Recent.
Force Quit.. Xcode and simulator. This kind of issue happned because maybe you are try to run more than one different version Xcode at same time.
I just had this issue when attempting to debug an iOS application from Xamarin, which uses Xcode to run apps in the simulator. I was initially targeting a 9.7" iPad Pro, attempted to change the simulated device to an iPad Air 2 (still on iOS 10), but the simulator didn't respond. After quitting and relaunching the simulator it appeared to load okay, so I changed back to the previous device - not sure whether changing devices actually did anything but I haven't seen the error message in the few times I've run my app since.
Solved it by closing all xcode and simulator. Don't ask me why. It was happening on the beta version for me
I had similar issue, what I did is I closed the simulator and all the Xcode and I went to the terminal and typed to see any Xcode application running then I killed it. I had one Xcode running in the background.
Command to see if Xcode is running,
ps -e | grep -i xcode
Use kill comment to kill any runing Xcode app, I used
kill -9 <pid>
The Same issue I have faced
in my case i stopped all applications and restarted my mac
and every thing is OK
Simple And fast Remedies..
1.Quit all xCode and reopen the xCode which you need to work...
I had this problem too, but I did below process it's working fine.
You have both Xcode 8.x.x and 9 running on your Mac, which causes the problem. Only run one Xcode at a time (Quit another Xcode, don't let another Xcode runing in background!).
This can occur when you have more than one version of Xcode installed on your computer. Make sure you QUIT (not just close) all versions of Xcode first.
Changing the device seems to have worked for me after doing the other stuff. Didn't have to restart my computer.
This question already has answers here:
"The application does not have a valid signature" Xcode 4.3
(7 answers)
Closed 6 years ago.
When i run my app in IOS 9.3.2 it works fine.
But when i run same app on IOS 8.3 it gives following Error -
"App installation failed:- The application does not have a valid signature."
This happends only when I install Swift application. When i install Objective c App with same profile and Certificate, it works fine. I am using Developer Certificate and XCODE version is 7.3
If you are changing xcode to run in ios 8.3 then once clean the project and then try. sometime it works. If not using another xcode then also try after cleaning the project.
You can clean project by command + shift + k or from product select clean.
Update:
If you have folder references(If you have blue folders instead of yellow) then remove it and add everything in individual group.
For do that i advise to first make one copy of your project as backup and then do experiment.
If you have not much idea about folder reference and group then refer this link.
Hope this will help :)
This question already has answers here:
Failed to Attach to Process ID Xcode
(37 answers)
Closed 4 years ago.
I just updated to Xcode 7.3.1 and my project crashes with the same error after the launch screen displays on the iOS simulator.
The error is:
"Could not attach to pid : “1712” unable to attach"
Then I tried running another project and I got:
"Could not attach to pid : “2025” unable to attach"
Any solutions?
Resetting the content and settings in the simulator worked for me. This is available on the iOS Simulator: Hardware -> Erase all Content and Settings
Kill the simulator, then re-build.
I closed Xcode.
On the simulator menu: go to Hardware -> Erase all content and settings.
Open Xcode then build and run the application.
The above simple steps worked for me.
Close Xcode & simulator
Reopen Xcode & rebuild
Above steps worked for me.
In my case Xcode 8.0 after this error,just rebuild again project it solves this problem.
There is no need for reset app content in iPhone device.
Clean the project,quit the simulator and then rebuild the app