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Since the Xamarin february update, after CTRL-F5 (or deploy+run) from visual studio, if the app was already running in the simulator, the new version of the app is deployed and run, but a black screen appears quite immediatly and won't go away.
A solution is to kill the app from within the simulator, the tap the app's icon.
Another solution is to kill the app from within the simulator before CRL-F5.
This behavior appears in both simulator ios 7 and 7.1
Can you try debugging your project using Xamarin Studio on the Mac, and see if you get the same behaviour?
I tryed this afternoon with the help o guys on jabbr mvvmcross channel, and get the same behavior.
Same behavior with Xamarin Studio mac.
Good, that narrows it down a bit. I still need more information though:
* Does it happen with any project, or just one in particular (i.e. what happens if you create a new project from a template - does that show the same behaviour?)
* Can you paste/attach the version information from Xamarin Studio's About menu (all the information shown when clicking on the Details button)?
* Is anything printed to the Application Output when the app goes dark and won't start properly?
* Is anything printed to the system Console (you can find it in Applications/Utilities/Console, select the All messages node on the upper left side) when the app goes dark and won't start properly?
* it happens with every project, event hello world
* it happens with every version of the simulator
* Application Output / sytem console
The log shows that the app is running fine. There are no new line in sytem console.
If i tap the app icon in the simulator (after killing the app in the simulator), it start correctly without black screen.
killing the app = pressing home key twice and swiping it away.
9:26:51 mac-de-minimac SimulatorBridge <Warning>: LaunchServices: installing app for existing placeholder LSApplicationProxy: com.tyop
Apr 3 19:26:51 mac-de-minimac SimulatorBridge <Warning>: LaunchServices: Not creating progress for LSApplicationProxy: com.tyop since it is not a placeholder.
Apr 3 19:26:51 mac-de-minimac installd <Notice>: 0xb0197000 handle_install_for_ls: Install of "/Users/iben/Library/Caches/Xamarin/mtbs/builds/AcTouch/1eb374c2-54d3-4471-be87-5ceca976ef51/output/Debug/iPhoneSimulator/AcTouch.app" requested by SimulatorBridge
Apr 3 19:26:51 mac-de-minimac installd <Notice>: 0xb0197000 MobileInstallationInstall_Server: Installing app com.tyop
Apr 3 19:26:51 mac-de-minimac installd <Notice>: 0xb0197000 install_application: Performing developer delta patch
Apr 3 19:26:51 mac-de-minimac installd <Notice>: 0xb0197000 MobileInstallationInstall_Server: Staging: 0.01s; Waiting: 0.00s; Installation: 0.03s; LS Sync: 0.00s; Overall: 0.04s
Apr 3 19:26:51 mac-de-minimac lsd <Warning>: LaunchServices: Updating identifier store
Apr 3 19:26:51 mac-de-minimac SpringBoard <Error>: libMobileGestalt MobileGestalt.c:835: still-camera is static and will never generate a notification
Apr 3 19:26:51 mac-de-minimac SpringBoard <Error>: libMobileGestalt MobileGestalt.c:835: stand-alone-contacts is static and will never generate a notification
Apr 3 19:26:51 mac-de-minimac backboardd <Error>: __hid_dispatch_pthread_root_queue_create_block_invoke: specific=0x4d35a90 pthread_self=0xb029b000
Apr 3 19:26:51 mac-de-minimac com.apple.iphonesimulator.launchd.4e8e2805 (UIKitApplication:com.shapr[0xe4d]) <Notice>: Service exited due to signal: Killed: 9
Apr 3 19:26:51 mac-de-minimac backboardd <Warning>: Application 'UIKitApplication:com.tyop[0xe4d]' exited abnormally with signal 9: Killed: 9
Apr 3 19:26:51 mac-de-minimac SpringBoard <Warning>: BKSWorkspace: Ignoring exit of com.tyop as it is pending activation, and will be relaunched.
Apr 3 19:26:52 mac-de-minimac SimulatorBridge <Warning>: Application launched after 0.00 seconds.
Apr 3 19:26:52 mac-de-minimac backboardd <Warning>: CoreAnimation: timed out fence 9cb7
Apr 3 19:26:52 mac-de-minimac SpringBoard <Warning>: CoreAnimation: failed to receive fence reply: 10004003
Apr 3 19:26:52 mac-de-minimac backboardd <Warning>: CoreAnimation: failed to send fence reply: 10000003
(normal app log from here)
Apr 3 19:26:53 mac-de-minimac AcTouch <Warning>: mvx:Diagnostic: 0.01 Setup: PlatformServices start
=== Xamarin Studio ===
Version 4.2.3 (build 60)
Installation UUID: 9196a473-93bf-4363-8f90-dab3a34944e4
Mono 3.2.6 ((no/9b58377)
GTK+ 2.24.23 theme: Raleigh
Package version: 302060000
=== Apple Developer Tools ===
Xcode 5.1 (5084)
=== Xamarin.iOS ===
Version: 18.104.22.168 (Business Edition)
Build date: 2014-10-03 18:02:26-0400
=== Xamarin.Android ===
=== Xamarin.Mac ===
Xamarin.Mac: Not Installed
=== Build Information ===
Release ID: 402030060
Git revision: 30c4afc300c2a39ec5300851357ce02e49dd217e
Build date: 2014-03-05 22:09:33+0000
Xamarin addins: f8a9589b57c2bfab2ccd73c880e7ad81e3ecf044
=== Operating System ===
Mac OS X 10.9.2
Darwin mac-de-minimac 13.1.0 Darwin Kernel Version 13.1.0
Thu Jan 16 19:40:37 PST 2014
This happen randomly using Xcode too. Apple's simulator support since Xcode5 has been a bit flaky.
It's not "needinfo",
your latest version finally fixed this bug,
that was introduced in your january version.
6 months with a productivity killer bug ....