I've an error in Xcode 6.0.1 on OS X Mavericks 10.9.5.
When I debug, the iOS 8 simulator shows this error:
Unable to boot the iOS Simulator.
After few seconds Xcode shows this other error:
An error was encountered while running (Domain = DTiPhoneSimulatorErrorDomain, Code = 2)
However, the iOS 7 simulator works!!
Do you have DYLD_INSERT_LIBRARIES set? Check /etc/launchd.conf and look for launchd_sim crash logs in ~/Library/Logs/DiagnosticReports ... if so, this is a dupe of
Unable to boot iOS 8 Simulator
At this point there seems to be a lot of problems with the simulator in XCode 6 compared to XCode 5. I've especially seen issues when switching between various deployment targets and simulator devices. Restarting the simulator usually fixes the problem and if not try restarting XCode.
I also had this problem and found the solution by doing following steps:-
1) Initially i downloaded Xcode 6 library in Documentation section under the path Xcode --> Preferences --> Downloads and restart my xcode but didn't solve my problem.
After that ->
2) Downloaded and installed the iOS 7.1 Simulator under the path Xcode --> Preferences --> Downloads.
Restart xcode again and the problem solved.
3) I am facing same issue again next morning.
Unsetting the DYLD_INSERT_LIBRARIES variable solves my problem:-
a) Open terminal and type "sudo vi /etc/launchd.conf" command and press Enter
b) Press I "Insert" mode and change this
"setenv DYLD_INSERT_LIBRARIES /usr/lib/libimckit.dylib"
to this
"unsetenv DYLD_INSERT_LIBRARIES /usr/lib/libimckit.dylib"
and press esc to exit from insert mode.
c) Save changes by typing ":wq" Press Enter
d) Reboot your system and problem soloved.
Prior to that i didn't found any iOS version in front of each listed devices
but after installation or by unsetting DYLD_INSERT_LIBRARIES variable i found the same in front of each devices.
>
Hope this helps anyone.
Thanks lads, but i finally found a solution.
For those who are still looking for solution, here is the one which helped me:
There is a file /etc/launchd.conf that will not be used by Yoseph. I just deleted it. You can unset DYLD_INSERT_LIBRARIES environment variable in that file too. Hope this helps you all.
Make sure you have under the path "Xcode --> Preferences --> Locations --> Command Line Tools --> Xcode 6.0 selected, if not select that. Another option is under iOS Simulator perform "Reset Content And Settings". Hope this helps!
Related
My Xcode Version 13.2.1 (13C100) got an unknown issue. I did several things like delete Xcode, new install Xcode, restore from backup nothing make any change! Currently, the project can be built and run in the simulator, but not in the preview window! it gives a message:
Cannot preview in this file - Timed out waiting for connection to DTServiceHub after 15.0 seconds.
What is the issue here any idea?
iMac becomes very slow when I taped the resume button.
Please Help!
I had a similar problem and was solved when I turned of Automatically refresh canvas
Suddenly It fixed, maybe the last update from apple through a software update called "Command Line Tools for Xcode". Before I have also tried a fresh OSX installation but the issue has not gone at all.
Check Software Update from system preference.
Thanks to the great community.
Try the following:
Clicking on the "Diagnostics" button on the failed preview pane.
Copy the ".pcm" file path. It looks like something similar to "/var/folders/aa/xxxxxxxxxxxxxxxxxxxxxxx/C/clang/ModuleCache/12345ABCDE/MyTest-XXXXXXXXXXXXXX.pcm"
Run the following command to remove the .pcm file in the Terminal app (replace the path using the specific path you copied from the Diagnostics log obtained in the step above:
rm -rf /var/folders/aa/xxxxxxxxxxxxxxxxxxxxxxx/C/clang/ModuleCache/12345ABCDE/MyTest-XXXXXXXXXXXXXX.pcm
References:
https://support.macincloud.com/support/solutions/articles/8000098646
https://developer.apple.com/forums/thread/696908
For me, it worked when I changed the device to Any iOS Device(Arm 64) for the preview
on a Mac with apple silicon chip
CTRL + Click on Xcode app
Get info
Check "open using Rosetta"
I had the same problem:
No preview with diagnostic : "Cannot preview in this file - Timed out waiting for connection to DTServiceHub after 15.0 seconds".
Tried the solutions found on the internet, without success.
I switched to macOS beta 12.3 and Xcode 13.2.
And now there is the preview...
The below solution has worked for me:
Running a preview for a project having scenedelegate or appdelegate which worked and then i tried running preview for app protocol style project which was not working earlier.
Running the iOS12 Simulator on xcode10 failed. but other versions of the Simulator were normal.
It may needs to set you command line tool.
Reset your simulator and install command line tool for Xcode 10.
Reset Simulator:
See Here: Xcode - install Command Line Tools
Its happens some time so, You have to do "Erase Reset Content and Settings" of simulator by below step.
-> Click on simulator
-> Go on "Hardware" in menu bar
-> Select "Erase Reset Content and Settings..."
Give some time after done it. Close Xcode and reopen it.
This symptom usually appears in two cases:
when the system app (eg: SpringBoard) crashes while setting up the debugging session.
because of buggy 3rd party kexts interfering with the normal operation of the system.
If you are seeing any background crashes of the system app around the time of the failure, that's the likely cause. Otherwise, you should check the output of kextstat | grep -v com.apple, remove any listed 3rd party kexts, reboot, and try again.
The problem is solved by moving the xcode file location under the application file, then restarting the xcode and running it.
I have an app that worked fine in the released version of Xcode. I downloaded the beta and after I fixed all the little changes I ran it and it worked. I just came back and ran it again and I get an error saying
The request to open "com.matthewhsingleton.Smoke" failed . (null) was unable to service the request.
I have quit Xcode and reopened it, I have restarted my computer, tried different iPhone simulators and all produce the same resulte
My error was similar, instead of "(null)", the message was: "SpringBoard was unable to service the request"
Restarting the simulator worked for me.
After reading #Droppy suggestion I read the thread and it is a common issue. To solve it is as follows
Problem solved for by an Apple Engineer in the lab. It's an issue they're working on. The bottom line was that when I copied Xcode to Applications folder, there was a bit set on it and that was preventing it from communicating with the simulator.
To fix it:
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.
Seen here https://forums.developer.apple.com/message/143094#143094
I had 2 versions of Xcode installed. Xcode 7 and 8. I resolved this issue by setting the command line tools to Xcode 8 in preferences. Open preferences -> Locations -> Command Line tools. Set that to Xcode 8.
When I run my iOS application in the Simulator for the first time in Xcode 6.0.1, I got this error message:
Lost connection to "iPad 2".
Restore the connection to "iPad 2" and run "App Name” again, or if "App Name" is still > > running, you can attach to it by selecting Debug > Attach to Process > App Name.
Can any one suggest how I can solve this error message? After I stop running and rebuild, everything works fine.
Follow 2 steps :
1- sudo DevToolsSecurity -enable
2- Edit Scheme -> Run -> Debug excitable , uncheck this checkbox it will be ok !
You will now be able to run on simulator. This worked for me.
Same here. I thinks that is the bug of XCode.
Just stop running and Run Again. This way is working fine for me.
This is a known issue with iOS 8.0 and earlier, but changes in iOS 8.0 make the issue more likely to occur than in past versions.
In addition to the lost connection message, other appearances of this bug will be an ESRCH error message (POSIX domain, 3 code), an FBS* domain with code 4, or your app getting SIGKILL and dropped to debugger. I think there may be one more message for this bug, but those are the main 4 behaviors. Which one you gets depends on exactly what point in the launch you lost the race.
At present, the workaround is just to retry Build&Run or launch the installed app in the sim and attach to the running process with the debugger.
Reseting the simulator content and settings would solve the problem. From iOS Simulator drop down select Reset Content and Settings, after that build and run again. I hope that helps.
This happens less frequently in Xcode 6.2 as compared to Xcode 6 beta version.
Only solution is to Re-run your project. This seems to be bug.
I receive the following error when trying to run the app on my device.
error: failed to launch '/Users/michael/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphoneos/Word Processor.app/Word Processor' -- No such file or directory (/Users/michael/Library/Developer/Xcode/DerivedData/Build/Products/Debug-iphoneos/Word Processor.app/Word Processor)
The app runs fine in the simulator. When I try to debug on the device, it appears to copy the app (I can see the icon), but then stalls with the above message. Xcode says it is running the app on my iPod, but nothing is happening on my iPod.
When I click on the app, the app appears to launch, but seems to be missing resources.
Other projects of mine work properly. What setting do I need to change to make this work properly.? Looking at the error message, it seems to be looking in my mac for the app. But this doesn't make sense since I am trying to run it on my 4th gen iPod touch. I am using Xcode 4.3.1 and iOS 5.1
With Mountain Lion and the latest version of Xcode (4.4.4F250), none of the suggestions in this thread worked directly (clean, clean project, remove derived data folder, etc). This sequence did. From DhilipSiva:
Disconnect your device
Delete the app from your device
Quit Xcode (Don't just simply close the window, quit it)
Delete derived data folder rm -fr ~/Library/Developer/Xcode/DerivedData (console)
Start Xcode,connect device & run the project
I solve this by going to Targets-> Info -> Required Device capabilities and delete the option with armv7.
Hope this helps!
This is a recurring problem that many developers are having with the current version of Xcode. The temporary workaround has been consistently deleting the DerivedData folder.
You can add doing it to a build script or even make it a cron job:
rm -rf ~/Library/Developer/Xcode/DerivedData
Sad, but true.
For me restarting of Xcode, cleaning DerivedData and restaring device wasn't enough in most cases, until I had figured out that iTunes was also running, and after quitting iTunes everything worked fine!
So my steps now are simple:
1. Quit Xcode.
2. If iTunes is running, quit iTunes.
3. Reopen project.
No need to remove app from the device, clean project or restart/disconnect device.
I think that's because Xcode and iTunes use some common libraries (as you know, Xcode Installer always asks to quit iTunes on installing iOS SDK).
I also had this problem after changing from a lower XCode and iOS version to the current XCode and iOS version.
I fixed this problem by changing th iOS Depolyment Target to a lower version, since my Device is not updated to the latest iOS yet.
You can do this by clicking the project inside the Info tab.
Have you looked at the Developer Certs and Distribution Certs if you have. When running in debug mode from Xcode your will need your app assigned with the developer cert and not the distribution cert. The distribution certs do not allow for debugging.
This error will manifest whenever the device capabilities described in the Info.plist do not match those of the device.
In my case, I was requesting GPS support and location-services support and trying to test on an iPod touch.
I struggled with this problem for 2 days and went through all the posts, tried all the options including, restarting Xcode, device, deleting DerivedData folder etc.
Finally, the problem was with the Info.plist file. In my case, I had improper icon paths in the Info.plist file. I suggest you to archive the application and then validate it to get the exact problem in you case. Only when I did that, I was able to find the issue.
I solved this problem many times with DhilipSiva's solution. However, it may not work sometimes. If that is the case, consider deleting and re-adding the target.
Removed armv6 support and it started working again
I stumbled upon this same problem on several diferent projects, researched a lot on forums and even here on Stack overflow. A lot of solutions were given, and some people seemed to get them working, but none of them worked for me.
So we tried some pretty obvious course of action, which for some reason we didn't tought about before: I've done a CHMOD -R 777 on the EXACT path indicated by the error message (I copied it directly).
Worked like a charm, 100% times!
Hope it helps, guys!
As Chronos mentiod, the device capabilities might be the reason. In addition I would say that in my case it was all about the UIRequiresPersistentWiFi key, which (for some unclear reason) didn't let me to install my app on an iPhone4. Hope this helps ones who tried everything else and haven't fixed the problem yet.
I solve this by going to Targets-> Info -> Required Device capabilities and check id at 0 index if armv7 not in 0 index then remove other things and armv7 set on 0 index and clean app connect device and run.
Hope this helps fine!
I did these steps:
Delete derived data: rm -rf ~/Library/Developer/Xcode/DerivedData
Deep cleaned the project: Shift Key + Option Key + Command Key + letter K key
Quit the project
Quit XCode
Deleted the app from my device
When I reopened the Xcode, launched the project, and then launched the app it successively ran on my device
For me it was Command Line Tools
Go to Xcode -> Preferences -> Locations -> Command Line Tools
Make sure you select latest Xcode version. I selected Xcode 11.0, and everything started working.
I get the similar question and has searched via the internet the whole day without solution yet...
Xcode 12, iOS 14.
I'm using a cocoaPods call GCDWebServer, which will open a build-in http service in iOS. Now it works fine in simulator and I could open a home page of it in my Mac's browser. But I cannot open the home page if running it with real iPhone. The browser said "Cannot connect to server"
And in console, everything is same without any errors provided for me.
Thus, how could I debug this?
[DEBUG] Did open IPv4 listening socket 3
[DEBUG] Did open IPv6 listening socket 4
[INFO] GCDWebUploader started on port 80 and reachable at http://192.168.1.3/