Xamarin Remote Simulator results in blank screen - xamarin

I know this feature is very new, so I'm hoping someone has had experience with this issue before and may shed some light on what might be going on. Right now we are trying to utilize Xamarin 4.2's new "remote iOS simulator for Windows". When I build to Mac simulator, it works fine the app shows up and no issues. When I turn on the option to use the remote simulator, the simulator opens, and then there's just a blank screen, as you can see from the screenshot there's no errors and it built fine:

Looks like you are hitting the following:
https://bugzilla.xamarin.com/show_bug.cgi?id=42333
The remote simulator is in preview, so there are likely to be bugs that have not been fixed yet. I'd suggest adding a comment to that bug report with any information you can provide.
If you would like to receive a notification when the bug is updated, you can add yourself to the CC list for the bug. Please note that you will need to create an account on that system if you have not already done so.

Related

Xcode 11 can't launch CarPlay audio application

In Xcode 11 GM Version can't launch Car Play audio application in the simulator.
Simulator stuck on the loading screen, then show "Unable to connect" error. Sometimes shows only black screen or crash on app launch.
While debugging, I see that methods from MPPlayableContentDataSource and MPPlayableContentDelegate won't fire. On Xcode 10 all work fine, so it's looks like some bug in new Xcode 11. Maybe someone knows how to solve this problem?
Thanks indeed.
I submitted a radar (FB7514196) to Apple.
You can see a copy of the radar here: https://openradar.appspot.com/radar?id=4997629368860672
Just installed Xcode 11.3 and I'm still having this problem. Contacted Apple via the Feedback Assistant and the response was:
Please ensure you're providing a prompt response to
MPPlayableContentDelegate and MPPlayableContentDataSource when you app
launches on the car screen. You have a few seconds after launch before
we show this timeout screen.
The first thing I do when starting the app is to set up this delegate and data source, so that's not the issue. Maybe something related to setting up CarPlay changed in the iOS 13 SDK.
Xcode 11 and Xcode 11.1 seem to contain a broken CarPlay implementation. Xcode 11.2 (beta-1) seems to work much better here. That said, the CarPlay simulator is finicky anyways and you should really use a real head unit to test your programs. I have found simply closing and reopening the CarPlay simulator to help with many issues, btw.
Still the same issue here with XCode 11.2.1
Anybody found a solution?
The CarPlay simulator has always been a total disgrace - for years!

Apple News Preview - Simulator stopped working

I am currently testing the Apple News JSON format using XCode / News Preview / Simulator and randomly running into a new error that was not occurring prior to today.
I am attempting to load the article.json file into the News Preview app (it's been working up until today). The article.json file gets successfully loaded with no errors in the console but the Simulator is claiming that the channel is not available for me. Here is what the error message on the Simulator reads:
Channel Unavailable
This channel isn't currently available in your region.
The News Preview and Simulator were working just fine until today. I have tried re-installing XCode and News Preview (and Simulator because I re-installed XCode) but the problem persists. Other colleagues of mine are now experiencing the same problem.
I tried also clearing all the content in the Simulator and tried wiping the device clean and also tried going to the "Debug" menu in Simulator and setting the Location specifically there, as well, without any success.
Is there a way to fix this or is there a way to know if there was a recent developer push to the Simulator code base?
Just to add a bit more detail, I am attempting to load the official Apple News article preview files, not my own article.json files (I tried loading my own json files, as well).
Any help is appreciated.
Hey I also just had this issue and have been troubleshooting since yesterday. Not sure what is causing it, but it only happens for my on devices simulators from iPhone 7 and newer.
Try running the preview on iPhone 6 or an older-gen iPad, etc... that's working for me.
The solution on only one of my machines was to enter the Publisher ID into the News Preview application, which is the first thing that is asked when launching the News Preview app. After entering the Publisher ID, everything seemed to return to normal - for all of my colleagues and I.
See my comment above about my new macbook and the new problem it is having.

iOS Today View Not Running on Device

I have created my first Today View extension that just displaying some texted it retrieves from a shared NSUserDefaults. It works perfectly and is ready to be shipped based off of how it displays and works through simulator, but when I try to run it on my device nothing happens.
The widget shows up in notification center but it has no height. I run my main app from Xcode and it wont let me attach the debugger to it and none of my breakpoints, nslogs get hit.
I tried running the Today View target on device and I can't get the provisioning profiles to be accepted. I also tried attaching the process of the today view to the debugger with the full bundle ID and it never attaches no matter wether I open notification center or not.
Im very new with extensions and have searched a ton around for an answer to this but cant find anything that worked.
Any help would be greatly appreciated, thanks.
and in my case i tested on SDK 8.2 and my test device running on 8.1.1 totally forgotten about Deployment target changing to 8.0 worked like charm..Might be helpful for the one careless like me..
For anyone that may stumble upon this all I had was add arm64 to the list of acceptable architectures and it worked
In your widget build settings set the architectures to armv7, arm64
see this post iOs today extension do not launch - lost connection to device

Xcode5 won't allow Frame Debugger / Analyze button is greyed out

Xcode 4.2+ and Xcode 5 have a very powerful debugger for OpenGL ES. Until recently, the debugger itself would crash often (it didn't work reliably for me until Xcode5.0), but it sometimes disables itself and refuses to run at all.
This being an Apple application, they don't bother with error messages, they simply refuse to let you press the Analyze button:
I can't find any reference in Apple's docs to a situation that would "disable" the analysis. I know that it can work on this machine, because it worked fine on a different device.
Device that works:
iPad3, running iOS 6.x
Device that Xcode5 refuses to work with:
iPad Mini, running iOS 7.x
...I've tried updating to latest 7.x - no change. Xcode just refuses to work properly. All other debugging works fine.
It's not a perfect answer, but I've noticed something that might explain it...
When you pause the debugger, this triggers the button to grey-out. So, if you needed to analyse the frame at a particular point in your app ... you can't.
It sucks, and I have no idea how you're supposed to debug something without using the debugger, but ... it might be why I was getting disabled button!

Cannot find executable for CFBundle CertUIFramework.axbundle

Just updated to Xcode 5 and this is the first error its throwing on the logger for all my apps. Can't seem to understand why this is happening.
2013-09-19 10:46:54.341 MyApp[1156:a0b] Cannot find executable
for CFBundle 0x8a7c7a0 </Applications/Xcode.app/Contents/Developer/Platforms/
iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/
System/Library/AccessibilityBundles/CertUIFramework.axbundle> (not loaded)
Edit (11-11-2013): To everyone reading, once I waiting for a solid working solution to accept and close. The highest voted answer works until you re-open the project only.
Edit (30-09-2014): I can see this has been sorted since XCode 6 has been released! Finally
Final Edit-
Temporary workaround: click iOS Simulator > Reset Content and
Settings... and run again.
This error message may reappear at random. For me, it happens when I
launch a different application. There are several threads in Apple dev
forums and in StackOverflow about this problem, but none have a
definitive answer. This seems to be a SDK error to be fixed in the
next Xcode version.
Updated: October 3.
CREDIT - Please check this answer - Xcode 5 Error CertUIFramework.axbundle
Further Edit
Although this was potentially the issue resolution at the time. I believe some of the newer answers below relating to the better touch tool are in fact the correct resolutions.
After reading Kirill's answer I did some digging as I didn't want to disable BetterTouchTool for everything just the "iOS Simulator" and you can.
Open the "iOS Simulator" and will it as the active app go to the BTT drop-down menu from the top bar (of that screen if you have more than one) and select "Disable BTT for Current App". It will turn to a play icon when it's disabled.
Make sure the app name on the bar is still "iOS Simulator" as mine jumped to "Finder" a few times when I clicked the top bar!
Now re-set the simulator (if it doesn't work) and rebuild. You shouldn't get the error! :)
Don't forget to clear the error if it's still there. ;)
BTT seems to remember what apps it's disabled for (or at least it does when you close and re-open the app that's disabled I haven't tried a system re-boot yet).
Its easy. Go iOS simulator and reset content and setting.
Thanks
If you are using XCode-5 then just reset the simulator "Reset Content and Settings" and run once again
So I was having this error too in Xcode 5 and 5.1. I wanted to figure out if it's Xcode bug or something else, so I did a fresh install of Mavericks 10.9.2 and Xcode 5.1. Everything seemed fine after multiple tests.
Here is where the problem began. I put the apps and settings that I mostly use and the error came back. So I deleted everything and started adding everything one by one. After couple days I had bingo! The problem is with BetterSnapTool and BetterTouchTool
Update 12.12.2014
Just started using Xcode 6.1 and noticed that this bug seems to be gone at least with Xcode 6.1 simulators and BTT 0.9985 versions.
Update:
As GasB pointed out, it is possible to disable BTT for certain apps. So just disable it for iOS Simulator. You just have to remember not to use gestures while using the simulator as that triggers the error message.
Simple solution:
Remove the ticks in preference pane, reset simulator and do clean build. The error message will disappear.
.
I had the same problem and solved it setting the 'Localization native development region' to match my systems region. In my case from 'en' to 'de'. The referenced files are stored in localized versions in your filesystem. So this setting is used to identify the needed version.
You can find that setting in your project settings at 'Info' -> 'Custom iOS Target Properties'.
Resetting the simulator ‘fixes’ it because it turns the accessibility support off. You can normally achieve the same by simply disabling the ‘Accessibility Inspector’ in the ‘Settings’ app.
If, however, you need it enabled, particularly hate this error message, and are feeling adventurous then you can use the following monkey patches to silence the error: https://gist.github.com/alloy/9277316. (Be sure to NOT include this in your release builds.)
Resetting the simulator is a PITA, I found a way to get rid of these messages without having to to this:
go to Settings > Accessibility
turn on Accessibility Inspector
turn off Accessibility Inspector
quit Simulator
I had this problem with Xcode 5 in ML 10.8.5
I re-installed Mountain Lion (in a Parallels' VM), then update ML to 10.8.5.
Then installrd Xcode 5, and it's worked fine.
I think that the error is caused by a third SW installed in ML.
The application Moom is also causing this issue, and I couldn't find a way to disable it for just the iOS Simulator. So for now I disabled it's accessibility features.
I'm on Mavericks (10.9.3) and encountered the same error in xCode(5.1.1).
I tried anything - reinstalling xCode from both AppStore and dmg. Resetting the emulator resulted in the same error and deleting the Simulator SDK folder gave no results too.
The issue on my end was indeed Moom as mentioned by #aorcsik! Disabling it's accessibility, followed by clean (cmd+shift+k) in xCode cleared the error.
Open Disk Utility and apply Repair Disk Permissions in Macintosh HD.
After doing above step, apply Reset Contents and Settings in iOS Simulator.
This above solution can definitely fix your problem.
I had this problem, and none of the answers in this thread could fix it. Mine was simple UI with a UIDatePicker. I resolved it by removing the UIDatePicker and the associated code, then added them in again. Problem solved!
For me it was Keyboard Maestro, adding the simulator to Maestro's exclude list silenced the warnings

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