Yesterday I updated my Visual Studio and Xcode. Immediately afterward I lost any listing of available iOS simulators for my Xamarin project in Visual Studio. I can plug my iPhone in however and deploy my project onto it just fine, but I'm used to working with Preview in VS and also running a simulator for quicker response.
I'm currently running the following versions:
• Updated to Xcode 11 (11A420a)
• Visual Studio Mac 8.2.6.26
• Mac OS 10.14.6
• iOS 13.0 on iPhone 7+
Now Visual Studio shows the only available simulator as being the Generic Simulator with a hammer, which doesn't launch anything that I can tell. When I look at the list to choose a simulator I see the message line: "Lower the 'Deployment Target' to see older simulators or check your Apple SDK path"
When I launch a test project directly from within Xcode, it offers iPhone 8, 8+, 11, 11 Pro and others as available simulators and those indeed work. In Visual Studio I have changed each Deployment Target from 6.0 to 12.2 and not one of those makes available any simulators.
I'm not sure what the Apple SDK path is about, how to check it and where it needs to be pointing.
Does anyone have any thoughts about what adjustments need to be made to regain my iOS simulators in Visual Studio Mac again after these updates?
Thanks so much :)
After trying a bunch of suggestions, this simple fix worked for me. First I changed my deployment target in the info.plist from 9.3 to 11. After checking that my Apple SDK path in VS was pointing at Xcode11 and the iOS SDK version on my Mac was 13.0, I simply force quit Visual Studio and Restarted my computer. Then I began to see iPhone8 & iPhone11 simulators. Goodluck.
Updating both XCode and Visual Studio for Mac worked for me.
Just updating XCode did not work.
I also fidgeted with the Deployment Target which I believe refreshed the simulators list.
UPDATE: I confirm again that when I go to info.plist and just click on the deployment target drop down, the simulators list gets update. Little funny.
Ran into this issue many times for the last updates. Nothing really helped, until I came across a Microsoft forum where someone mentioned the Apple SDK path needs a trailing slash, which is not added when using the Browse button to navigate to the Apple SDK Location.
So when using Visual Studio for Mac, navigate to Visual Studio -> Preferences -> Projects -> SDK Locations -> Apple and please note your Apple SDK Location should be something like:
/Applications/Xcode.app/
rather than
/Applications/Xcode.app
Changing the "Minimum System Version" did the trick for me.
Eg. I had 14.4 and I changed it to 14.0 and restart VS the all the simulators appreared.
I resolved the issue as well by going under the Visual Studio --> Check for Updates menu and switching the channel to "Xcode 11 Previews". Finally some updates were available and I updated everything normally. I also updated everything in the "Stable" and "Preview" channels as well. Now I have iPhone 8 and iPhone 11 simulators working, however I no longer have any of the other simulators like iPhone 7, etc. like I did before.
After updating Xcode via the app store, restart your machine. The simulators should reappear.
UPDATE
This didn't work for me after the latest update. However, setting the startup project to Android, then switching back to iOS was enough to repopulate the list for me after restarting my machine.
info.plist has an option called Minimum supported version which says which version of the iOS you are targeting.
in my case it was 10.3 earlier, when i have upgraded xcode (12.4) and vs for mac(8.9.6) to support iOS14. this caused the conflict between the xcode supported iOS version and plist version.
I changed it to 14 in plist for the Minimum supported version and it worked for me.
In summary check the xcode supported version and update the minimum supported version accordingly
Same here, just need to change 'Minimum system version' on your info.plist file in my case was 12.0 and then updated to 12.1 and vualaaaaa the simulator list refresh it.
I had the same problem when the iOS 14 updates were first installed. I had already installed both XCode and VS updates.
What I did is: I restarted the Mac and I had to install the XCode Command-line tools from VS separately. Then the simulators were visible.
What always works for me is connecting an iPhone device. After I connect it, the simulators appear. I guess connecting a physical device also refreshes the simulators list.
This time, nothing was working for me, until I deleted /Library/Caches/Xamarin/XMA and /Library/Caches/Xamarin/mtbs and restarted VS. That helped.
Here's the actual solution if updating everything else still doesn't work. Open terminal, type in "instruments -s devices" to see a list of all the installed simulators.
In your info.plist set "Minimum System Version" to match the lowest simulator version you have installed.
After plugging in my physical phone with the usb cable, the list of simulator devices appeared in like 2 seconds... Before plugging in my phone, only the generic simulator and my phone were shown as deployment options
Just restart of my Mac worked...
I started to have this issue once I upgraded my phone to iOS 11.0.3.
It seems that now Visual Studio Community Edition for Mac (v7.2 build 636)
I've tried with both with XCode v9.0 (9A235) and v9.0.1 (9A1004)
This is the error that I receive in the application output in Visual Studio for Mac:
"error MT1108: Could not find developer tools for this 11.0.3 (15A432) device. Please ensure you are using a compatible Xcode version and then connect this device to Xcode to install the development support files."
I've verified that the path is set correctly for xcode-select, so in theory, it should work correctly. I'm almost thinking that the Xamarin toolchain does not yet support iOS v11.0.3
I've also tried deleting the bin/obj folders to no avail.
Might anyone be able to confirm that the Xamarin toolchain is compatible with iOS v11.0.3, and if so are there any special steps that need to be taken to make the toolchain recognize the version?
I can potentially downgrade my device to v11.0.1, but before I do I'd like to know if the toolchain is indeed incompatible.
Please let me know if there is more information that I can provide.
Apple ships some extra development code for devices when it release Xcode (an additional disk image to be loaded by the operating system).
In general Xcode ships them for everything it support at that point of time. Which means that when a newer version of iOS is shipped after the Xcode release the missing disk image might be unavailable until an updated Xcode is released (Apple can't guarantee future compatibility of the disk image).
E.g. for Xcode 9.0 (I don't have 9.0.1 installed)
/Applications/Xcode9.app/Contents//Developer/Platforms/iPhoneOS.platform/DeviceSupport/11.0 (15A372)/DeveloperDiskImage.dmg
Xamarin.iOS tries to load the image based on the device version. If it cannot find it it will report the MT1108 error. A potential workaround would be to rename (or copy) the disk image to match your iOS version number. YMMV depending on the changes that Apple introduced in that iOS update.
Note that Xamarin.iOS does not need the disk image for most features. The most visible one, where it's required, is to automatically start the application on devices.
As you found out the deployment works and you can manually start the application and the debugger will connect. I'll update the documentation to include this information.
Update
There was no further Xcode 9.0.x release after iOS 11.0.3. However the next Xcode release (9.1) included support for all 11.0.x versions.
/Applications/Xcode91.app/Contents//Developer/Platforms/iPhoneOS.platform/DeviceSupport/11.0/DeveloperDiskImage.dmg
The shasum of both images are identical so you can assume the one from Xcode9.0 could be renamed/copied without any issue.
Navigate to project folder and delete folders named bin & obj. That should fix the problem.
I have a slow internet connection and am trying to avoid downloading previous XCode documentation sets and SDKs.
I just installed XCode 4.5 and see they included no documentation sets for any iOS version. There is also only the SDK for iOS 6.
I deploy on iOS version 4.2 and later. I also had many iOS SDKs for testing and all the docsets.
Is it an issue to copy my 4.2, 4.3, 5.0, etc. docsets and SDKs to the XCode 4.5?
The new install location is different so I'm even wondering where I would move them to.
Thanks in advance
My old Developer folder was in the root HD folder. I don't know if that's typical. The docsets were located here:
HD/Developer/Documentation/DocSets
The simulators were located here:
HD/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs
Unfortunately I wasn't able to get XCode 4.5 to recognize any docset I moved from my XCode 4.2 installation. I had to let XCode 4.5 download them.
I did successfully move content from my developer XCode 4.5 GM to the AppStore XCode 4.5.
The .docset files are stored here:
~/Library/Developer/Shared/Documentation/DocSets
Nothing had to be done as XCode 4.5 from the AppStore recognized what I had downloaded using my XCode 4.5 GM. This is good news because it means future XCode versions will probably recognize them as well.
The simulator files are stored inside the XCode.app itself:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/
I just copied these folders from the XCode 4.5 GM to the App Store XCode 4.5 into the above folder:
iPhoneSimulator4.3.sdk
iPhoneSimulator5.0.sdk
iPhoneSimulator5.1.sdk
My understanding is that the minimum supported deployment target with Xcode 4.5 or later is iOS 4.3 so I didn't move any other simulator SDKs.
Of course, you need to control-click (or right mouse click) the XCode application and select Show Package Contents before you can navigate to the Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/ folder.
I don't know what this means when a new Xcode is release and the App Store installs the update. Will it wipe out these SDKs I moved? I've already made a backup of my modified XCode 4.5 in case they are lost when upgrading XCode through the App Store.
Hope this is helpful.
I have been frustrated that I have had to use the very buggy XCode 4.5 to build to my device after having upgraded to iOS 6 .
Unfortunately, this version of Xcode for some reason does not allow my app to push or pop view controllers... an issue that completely goes away when I switch back to XCode 4.3.2.
I wanted to be able to use XCode 4.3.2 to build to my iOS 6 device, but this is officially not supported in 4.3.2 because it does not support anything greater than 5.x.
Is there a workaround or fix for this?
Here is a fix for the issue:
1) When you install the latest developer release of XCode, leave the previous version on your computer
2) Make sure the previous version of XCode is quit and then open the developer release version and open the Organizer window
3) Open the old version of XCode and open the Organizer window
4) Click back on the old version of XCode and your device should now show under the run scheme drop-down menu. You should now be able to build and run on your "unsupported" device.
NOTE: This worked for me with XCode 4.3.2 and XCode 4.5 building on iOS 6 for the iPhone 4S. It may or may not work on future versions of XCode or iOS.
I hardly ever get out of Xcode. I was receiving this error "unsupported device (null)" and I tried clean, switching USB ports, switching devices to no avail.
I exited and reentered Xcode without even unplugging my device and it fixed the problem. When the "unsupported device" is given, I noticed that no icon (like a little iPhone) next to my device name was displayed. After I restarted Xcode, I saw the icon and knew my problem was resolved.
Having a similar problem as that described in MonoTouch and Xcode 4.3 from the App Store. I moved XCode to a different location and am getting:
The Apple iPhone SDK is not installed.
I've attempted to point MonoDevelop to the new location via "MonoDevelop -> Preferences -> SDK Locations -> Apple SDK", and while the GUI shows success when I browse to XCode.app, the new path isn't saved and I continue to receive errors.
I also tried to move it back to "/Applications/" but again, the setting doesn't take in MonoDevelop although the GUI shows that it successfully found the Apple SDK in the default location.
Note, I am running MonoDevelop version 2.8.8.4 at the moment.
Any suggestions? Should I downgrade to 2.8.6.5 Beta as suggested in MonoTouch and Xcode 4.3 from the App Store?
Answering for the benefit of other users who experience the same issue. #poupou's suggestion above (a comment to my original question) was what worked for me. Simply "Make sure you restart MonoDevelop after changing it's SDK Location."