I'm running XCode 8 and I've followed a few of the resources to run multiple simulators but, unfortunately, whenever I compile the code within XCode, it restarts all of the simulators to the same exact version and crashes all except for the primary that's displaying the application.
My approach was the open -n Simulator.app where I open up multiple simulators manually and then target the various devices within XCode.
Any better solutions out there?
Xcode 9 supports this out of the box, I would recommend that you upgrade unless you have a specific reason not to do this.
Related
I began typing up this issue and before I submitted it I solved the problem, but since it cost me all morning to resolve and I've seen it before, I figured I'd post it to help others out if they should run into the same issue.
I lost all the destination simulators in a single XCode project save for MacCatalyst and any physical devices. The cause was turning on Mac Catalyst. It's not quite that simple since I am using two different development computers running different version of MacOS. I was quite careful to not have the project open on the two different systems at the same time since that has caused other minor issues issues in the past as well.
I did some work on the second system to resolve issues with MacCatalyst, then closed that and returned to the original computer and discovered all the simulators were missing from the destination drop down. They're there under Windows -> Devices and I can add others but they never show up on the drop down. Other projects work fine.
I'll provide the solution below.
After trying restoring the project file and restoring XCode and deselecting Mac Catalyst all to no avail. I tried de-selecting iPhone and/or iPad and magically the simulators re-appeared. That's all it took.
I've seen this post for running multiple simulators on Xcode 9: How to run multiple simulators on Xcode 9?
The working solution was to go to Hardware > Devices and choose a simulator from there. But I'm currently using Xcode 13 and many developers may have the same version now. In version 12^/13, we won't find Hardware up top. So how do we run another simulator from there?
In order to open another simulator, you'll need to go to File > Open Simulator and then choose from the devices there like this:
You're all set! I just want to share this to everyone to help save their time and avoid getting headaches (like what I've experienced) just to run another simulator on Mac.
I want to test/run my app on different iOS versions in Xcode, but somehow I can't see any option to change iOS simulator version (I have both 6 and 7 SDK/Simulator installed) in run targets. I'm also seeing all of my attached devices twice (I have only ONE iPod, but when I connect something else, they all display twice):
There's probably a bug with the device list of Xcode. How can I reset this list? I've tried resetting the scheme, but scheme is project related anyway. The problem occurs in all projects, not only a single project.
First of all, you have to install the 6.1 Simulator.
After that, you can choose which simulator version to use:
I've figured out the problem. I was on the "Latest iOS SDK" which was 7.1 SDK (I also have XCode 5.1DP installed). I've changed the base SDK to 7.0 and I am again able to choose. I still have two entries for each physical device but I can live with that.
Hi I just upgraded to Mountain Lion. I created an empty Single View Application and run it. The first time it runs fine but the next runs will give me the "There was an internal API error" pop-up warning TWICE. It's the same with my other projects. They run okay once but gets this error the next runs. There was no warning or any specific warning message of any kind.
Any idea how to solve this?
Would really appreciate your help.
I have it working on iOS6 Beta 4!! This is what I did but other variations may also work:-
Install XCode 4.5 Developer Preview 4
Delete your app from the device
Run your app from Dev Preview 4
Delete your app again (not sure if you have to do this)
Return to XCode 4.4.1
Run your app, stop running, run again!!!
Of course you could continue developing in 4.5, but I prefer to wait.
Installing 4.5 Beta 4 installs updated device support. Once this is done once (possibly on any device) it should work fine. If you use the same device on a different machine you will have to again run it once from 4.5 Beta 4 before using your preferred version of Xcode (You do not need to delete the app from your device this time).
Edit: I am pretty sure that if you make a change to your core data you will need to run from 4.5 for the first time also.
Don't know if this helps, but I've deleted all files in ${HOME}/Library/Developer/Xcode/iOS DeviceSupport and it worked as a charm (Xcode 4.4.1, OSX 10.7)
I had this problem when I upgraded my device to Preview4 but had my MBP still running Xcode Preview3. Updating to Xcode Preview4 made the problem go away for me, no restarts necessary.
Deleting the app manually from the device/simulator will allow you to build and run successfully. A long term solution is to not use a Beta Xcode :)
Sounds crazy but you can also not use the Beta version of XCode 4.
However, you must keep it in your left hand to authorize your iPhone to compile with the non Beta version (don't ask me why, it works).
If you run your app with XCode 4.5 preview & IOS6 Beta 4, the second time you run your app on the device, you'll get the internal API error.
In theory, you cannot use XCode 4.4 to compile on your iOS6 Beta 4 iPhone.
But...
It seems that, if you launch XCode 4.5 Preview, connect your iPhone (so it is recognized), run the application on it (even if you get the error), quit XCode 4.5, launch XCode 4.4 and .. tadaaaa... your iPhone is now recognized as an authorized device to compile on...
And of course, XCode 4.4 doesn't generate the api error...
I have Xcode 5.0.2 and iPhone with iOS 7.0.6.
Every time when I launched my project on iPhone, I saw "There was an internal API error". And it was launched on simulator without any problems.
I did all the stuff that usually helps (like remove an app, clean, restart Xcode, restart a mac, etc.).
This problem went away only after I restored the iPhone. Sad but true.
I don't know so far, why it appeared.
Problem
Instruments' Time Profiler is stripping all symbols except system libraries from my app, despite the fact that I have disabled this behavior in all relevant build settings in Xcode — but only on one development machine. The other dev machine behaves normally.
Description
Instruments' Time Profiler is stripping all symbols except system libraries, despite the fact that I have disabled this behavior in all relevant build settings in Xcode — but this is only happening on one of my development machines. I have two development machines running the same version of OS X, Xcode, and Instruments, and each machine is using an identical copy of the same Xcode project with identical build settings, schemes, and other configurations, and the app is profiled using the same test device (iPhone 4S with the latest public version of iOS 5).
Machine 1
- Mac OS X 10.7.4
- Xcode 4.3.2 (4E2002)
- Instruments 4.3 (4321)
Machine 2
- Mac OS X 10.7.4
- Xcode 4.3.2 (4E2002)
- Instruments 4.3 (4321)
Steps To Reproduce
Open included sample project on each machine.
Make sure the iPhone 4S is selected as the test device.
Select Product > Profile
When Instruments launches, select Time Profiler and continue.
Run the app.
Notice how the symbols are stripped when running on the iMac (Machine 1) but not on the MacBook Air (Machine 2).
Expected Behavior
Symbols from my own code should appear in the Time Profiler on both machines.
Regression
I have tried all of the following, with no change in the actual results:
Rebooting the machine.
Trying other Xcode projects
Deleting the "Derived Data" for all projects in the Xcode Organizer.
Re-symbolicating the document in Instruments (carefully selecting the correct DSYM file in ~/Library/blahBlahBlah…)
Final Notes
Here is a link to a .zip file of a sample project: Sample Project .zip
I was finally able to get it to work by a method that's just shy of a nuke-and-pave scenario:
Make absolutely sure all symbol stripping is disabled for your current build configuration. Make sure you've done this for your Release config if that's what's being profiled for Instruments.
Delete the app from the iOS device.
Restart the iOS device.
Restart the Mac (I don't trust Xcode or Lion at all to quit all relevant processes otherwise).
Launch Xcode, go to Organizer > Projects and delete Derived Data for the affected project.
Clean your project. Hell, why not?
Build and profile for Instruments.
Choose the Time Profiler in Instruments for clarity.
The first run will not show the symbols, but don't quit. Leave Instruments running!
Re-symbolicate the document in Instruments, navigating carefully to the correct dSYM file for the current build. This should be easier since you've deleted the derived data in step 5.
Now you should be able to see your symbols. It helps if you hide non-objective-C symbols.
Why do I suggest that you delete the app and restart the iOS device in Steps 2 and 3? I have a suspicion that Xcode doesn't perform a clean installation of each build, but may install deltas, such that the symbol addresses present in Instruments are a mixture of the current build plus previous builds. If so, then this issue is even more common for someone like me, who shares a single test device between more than one Mac. This assumption could be wildly incorrect.
If the above steps don't work for you, please let me know in the comments. I'd like to create a detailed radar report at some point in the future.
I'm not sure that it has been fixed in the 4.3 but this is a known problem in 4.2 seen here
Instruments
There is a known issue with the Profile action from Xcode 4.2. After a build in which no source files have changed, Instruments will be unable to gather symbols for the target application.
This affects projects where both:
The Release configuration is selected for the Profile action.
(default)
The Strip Linked Product build setting is set to "Yes”, or
a custom Run Script build phase strips the product. (non-default)
The workaround is to do any one of the following:
Perform a "Clean" on the product before initiating the Profile
action.
Do a Clean of the product and temporarily set the Strip Linked
Product build setting to "No" while Profiling.
Set the configuration of the Profile action to Debug.
Run successive profiles directly from within Instruments when you do
not need to rebuild. When developing Mac apps, using the GC Monitor
template in Instruments may cause Instruments to crash. To
workaround the problem please consider migrating your application to
ARC.
I've had a similar problem for days. I was able to profile the Debug configuration, but not Release. First I tried to make a copy of the release configuration (as suggested somewhere on the web), but that copy did not work either.
Then I made a copy of Debug, called it Profile, tried it and the symbols of Profile were shown in the profiler. Great! I then changed the optimization levels etc. to the same as Release, and now it works! Just wanted to share this, as this comment would have spared me hours...
Have been facing the same and stumbled upon this thread.
I realized that I first profiled the app with release build and after changing the scheme in Xcode for the same app, the profiler was still unable to symbolize. I have tried all obvious solutions you mentioned above but in vain.
The profiler somehow is still referring to the first build (release build)'s settings and hence it is not able to symbolize. So, I just changed the app's bundle identifier for testing purpose so that a new app is created altogether for profiling purpose. I could check the code where leaks exist now.
Try it out and let me know if this works for you too. Still pondering over why Instruments is failing to symbolize though.
I had a similar issue where I had no symbols in my os x application that I built from the command line (so in this case it is not an iphone or xcode issue). It turned out the problem was due to a bad DYLD_LIBRARY_PATH that contained my PATH. When I got rid of all those non-library paths, such as /usr/bin/, it worked.
I have a lot of third party frameworks whose symbols and binaries are unfortunately getting lost.
Additionally, my app's binary was getting lost.
I.e. if I selected File > Symbols, clicked my target, and found the similarly named item, the Binary Path was showing up red.
The solution was to go to Instruments > Preferences > Symbols, and add /Users/<MY_USER>/Library/Developer/Xcode/DerviedData to the search paths. Library is not indexed by Spotlight. After doing this, I have at least had the symbols for my app. The little circle next to my app's name goes from Yellow to Green when I do this, and persists between restarting Instruments, unlike other solutions to manually set the binary.
Let me know if you can tell me how to get all the ones for my third party frameworks. I use Carthage for some, others installed manually. Have had no luck with these yet.
I've managed to solve this by:
Disconnecting the device
Deleting the iOS Device Support files for the device's version of iOS in ~/Library/Developer/Xcode/iOS Device Support
Reconnecting the device and letting Xcode reinstall device support.
To be safe I first quit Xcode and Instruments, deleted derived data, and did a clean build as mentioned above, but no need to delete the app or restart any devices this way.
Try open XCode 3 and him Organizer. And try add from this Organizer a devices to both machines.
Just open Organizer and wait him processes. If you're see a button "Use for development" then click him.
Sometimes, XCode 4 can't add a device a truely for full development.