When I press Run on Xcode with other tasks already running, the following message appears:
Simulator in Use.
The Simulator can't be launched because it is already in use.
I checked with some friends and when they press run, Xcode automatically stop the tasks running and run the app you want. How can I configure this here?
Thanks in advance,
Quit the simulator and try again. if not working quit the Xcode and try again.
If you have two projects open in Xcode and one is running on the simulator, you can't run the other. Go through each project window and see if any are running, and if they are, press the "Stop" button on the top left:
In most cases Josh answer solves this problem. But just now happened to me to have only one project in Xcode and trying to clean and built it did nothing.
For me (this time) the solution was to:
Right click the simulator from dock and click Quit.
I did the same for Xcode (right click on Xcode in Dock and clicked Quit).
After that just re-open Xcode and voila!
It works!!!
If the issue is you have multiple projects open and running into Simulator conflicts, someone created a little Automator script that closes the current simulator and starts the next one. Kind of a work around but might work for you.
Check out the detailed answer here.
The over attached debugger syndrome
This happens to me when I switch simulator type (ios version or device type) without pressing the stop button (application was still running on it). To fix this, switch back to the old one (if you remember witch it was :P), run then stop the application, switch to the desired simulator configuration, run, tadaaaa: the error is gone.
This can also happen if you have two projects and one is running, and you try to run the other one. The solution is to stop the other one before starting the desired one.
This ca also happen if you had some kind of crazy bug and the simulator is unresponsive, in this case the debugger remains attached, crying over it's beloved simulator. You have to close the xcode simulator and sometimes restart for this one.
I have the latest xcode version at this time and got fustrated for a while. Now I'm free from restarting the simulator, xcode, coputer, router, going to sleep and waking up the next morning... :D
Hope this helps you guys apple has a lot of weird unclassified exceptions in xcode. They could least say that the debugger is still atached to something in the memory, we are programers not ordinary users, the more errors you give us the better we understand how to avoid them.
My personal favorite si when xcode puts absolute paths to your newly added famework that go nuts triing to find out why it doesn't work on an other computer (The project in wonderland syndrome).
(and rant rant rant irony rant.. you get the idea)
Quit the xcode and simulator ,and try to restart your mac
Quit the simulator and try again.
Your mac might be opening iPhone Simulator automatically, In order to stop this you can run Terminal, OSX's version of command prompt, by navigating to ~/Applications/Terminal.app
from there you can run these commands.
top -u This command shows the mac's processes, and some information about them, from there you can see whether iPhone Simulator might be open.
sudo killall iPhone\ Simulator Deconstructing this command for you, sudo puts you into superuser mode, by having you enter your login password, killall : This command kills all processes by the name specified. iPhone\ Simulator: This being the name of the app, and in order to have a space requires the \ (space) before the second word. By running this command you will kill all processes called iPhone Simulator.
If this doesn't help, then try rebooting.
If rebooting doesn't help try re-installing XCode.
If re-installing XCode doesn't help, then try re-installing your Operating System entirely.
Good Luck!
There are three solutions for this issue:
Right click the simulator on the Doc, quit and then re-run the application from the Xcode.
If this did not work, then -
Save your code, Right click the Xcode, restart the Xcode with your project and then run again. Remember to select simulator instead of device in the target.
If this also did not work, then,
Force Close - Simulator/Xcode - Restart your mac and then run Xcode again.
Most likely - the first step would be enough!!!
To get the simulator to stop whatever is running you need to check off the box "Do not show this message again".
Example:
And then click the box.
And then you can run the simulator even if a program had already been running.
I've been having this issue as well, but for me the problem doesn't have to do with XCode or Simulator.
The problem was in my code. A process was making the CPU run at 100%, and fixing the bug in my code fixed the simulator problem.
Force Quit both, iOS Simulator and Xcode, then reopen Xcode and run project.
Two Possibilities.
1)just quit the simulator,and run the application you want to run
2)just stop the application that using the simulator and run the application you want to run
Try these steps in increasing order of persistence of the problem:
Quit the Simulator.
Clean the project, Reset Simulator, Delete 'Derived Data'.
If nothing works, Force Quit Xcode and Simulator from the Mac Menu.
Force Quitting Xcode seems to always work for me.
It was one sticky Xcode bug indeed. Now it's solved, happy coding!
i have run my application in device but application is crashed and print following message
error from debugger: the program being debugged is not being run.
so please tell me what to do?
my application gonna launch properly but not not debugging first time (gonna crash) than from second time i start application work proper without crashing
my application install in device. we can`t debug in device...
The first thing i do when i get that is a Clean All usually solves that. If you don't see the Clean All button right click your Xcode toolbar, customize, and drag the Clean All button to your toolbar from there.
-Check that the provisioning profile installed on your device haven't expired (would see a red dot in the organizer - Window->Organizer).
-Try restarting XCode.
Do you mean device? If so then it could mean the device is not launching the application correctly. Make sure your developer profile and everything in the build settings is correctly set. This may sound obvious but also make sure the device is unlocked and open.
i am running my program using iphone simulator n at some point application crashes..but there is no error...just getting Debugging terminated in debugger console
how i can check this what is the problem of crashes?
How about memory leaks?? If you are alloc-ing a lot of variables and not releasing them this can cause memory leaks. Which will in time cause the app to crash with a black screen. Try running your app with the "Leaks" tool. Go to Run -> Run with Performance Tools -> Leaks. Go through everything you can in the app with this tool running and it will inform you of any memory leaks.
Here is a good link for information about using the Leaks Instrument:
http://mobileorchard.com/find-iphone-memory-leaks-a-leaks-tool-tutorial/
Also check your code!! If you know where its crashing go and check the code and make sure your doing everything you intend to!
Try to look into crash logs. You can find them in ~/Library/Logs/CrashReporter
I am having trouble launching Time Profiler in Xcode, both for Mac Applications and iPhone apps.
The steps I have tried are opening Time Profiler, Clicking the choose target drop down box, selecting my iPhone or Mac book. Choose target -> myApp. If I choose a Mac app then I hit the record button a big yellow warning pops up accross the window saying unable to configure sampling trigger for x. If I choose an iPod app then the record button stays greyed out and cannot be clicked.
Any ideas what I'm doing wrong here?
Have you tried starting Instruments via (in Xcode) Run -> Run with Performance Tool -> Time Profiler? That may help set up Instruments and get you running v. launching Instruments manually.
Also, I have had trouble in the past where the SDK used to build the iPhone app differed from that which Instruments was expecting. Check out the Instruments documentation on how to explicitly tell it which version of the iOS you are running to perform the benchmarking.
Sometimes Time profiler is greyed out because you dont have application install on simulator...if you have application installed on simulator and then you try Run with Performance Tool it shows Time profiler enabled.
I have a hard-to-catch error that only happend the 2 or 3 time I start my app, after a previous failure of it.
But because when I do Run&Debug from the XCode menu the app is delete from the simulator or device, I can debug it to find what is happening.
I try to attach to the process, but when I succed is too late and the app crash. I have the data of the crash, but can't make sense of it (and anyway, I want to know the trick!)
So, how I start dirty from in the xcode debug session so I can debug AFTER the first run of the app?
Instead of choosing "Build and Go" or "Go (Debug)" you should choose "Debug" from the "Run" menu--that will just re-run your app, but not re-install it.