I'm trying to start my app in the simulator but it's showing me this screen:
I tried resetting the content and settings, but nothing has worked. Does anyone know how I could fix this?
That screenshot indicates that Data Migration is still running. You can gather more detailed information about the progress by looking at the device's system.log (Debug -> Open System Log).
Related
My app is using Firebase Analytics and I believe starting in iOS 13.2 started getting the errors described here: Why I get the console warning: [Process] kill() returned unexpected error 1 when I load a WKWebView in iOS13.2?
I guess it wasn't a big deal
Since I planned for my app to go live in January, I began bigger tests in physical devices. I noticed after a while the app started to behave erratically, specially after receiving a [general] Connection to daemon was invalidated error. This doesn't occur in the simulator
Searching the internet I found a post that describes the same problem: https://forums.developer.apple.com/thread/124306
In my case, only Firebase seems to be calling WKWebView, but every time I open the UIMenuController I get the error described in the console and the app appears to be missing inputs. This is specially troublesome with UIScrollViews, which my app uses a lot. The pinch gesture seems to work at will. On an iPhone 6s, the issue isn't as noticeable, on an iPad, it's like a 50% chance the pinch gesture will work properly
Outside of removing Firebase, is there a way to mitigate this issue?
1 June 2020: The console message still persists, however, I have seemed to resolve the UIScrollView issue by deactivating delaysContentTouches, now the pinch gesture seems to work most of the time
23 October 2020 If anyone notices their app starting to behave erratically with no apparent reason I HIGHLY suggest to test it on an iOS 13 physical device if possible. Seems that Apple removed the warning from iOS 14, but testing it on iOS 13 you can pin point the exact reason after the warning appears in the console
Upon further testing, I've reduced the view down to a dead-simple UI view with a single SwiftUI TextField and the 'Connection to daemon was invalidated' still appears after I type the first character into the field. Soon thereafter the app crashes with a sigAbort. (So I don't think the reason is the UITextView wrapper I was using in the previous post). Once the invalidated message appears the app is doomed to crash, not right away but soon thereafter.
I have no idea what causes the 'invalidate' message and a Google search seems to imply that no-one else does either. Some folks appear to have made (experimental?) changes to their UI that stops the message but it appears to be impossible to determine a definite cause. (and like before it only occurs on a real phone)
Same issue without using Firebase at all. What I did: Delete build folder and compile again. Issue does not appears again.
On Xcode:
Clean the Build Folder
This will delete all of the products and intermediate files in the build folder. To clean the build folder you can use the shortcut Command+Option+Shift+K or Menu Bar → Product → Hold Option Key → Clean build Folder.
On Flutter:
Just delete build folder.
I have used Expo a few times successfully before, but for a few days now, I am unable to get into the Expo App. Whenever I open it, I see the Expo icon for a few seconds up to even minutes, and then it redirects me to the blue "Something went wrong" screen, as if I had tried to open an app.
But I didn't! It doesn't even let me scan a QR code, it just always shows this error. If I click the back button in the app, it simply terminates. I have ensured that it is the latest version and already reinstalled it once.
It seems like it somehow had locked itself onto an old, now non-existant server, and kept at it after reinstalling the app. Here is how I solved the problem:
In the metro bundler, choose connection type "Tunnel" and copy and send the URL to your phone. If you then click on it on your phone, it should redirect to the expo app. After that it got unstuck and I could finally use it normally with the QR code again!
The tools sometimes do get locked into this state.
Close and restart all components (Expo cli, browser tabs and clients) making sure to:
Kill any stray processes on the server (you need to check Activity Monitor / Process Explorer or similar depending on your platform)
Force quit all client devices and simulators using the correct method for each platform. To verify that the client process has actually been killed, check that the app splash screen is displayed for a short while when invoking it.
Clear the Expo cache when starting again: $ expo start --clear
I ran into the same issue. Solved it by going to the left sidebar in the Metro Bundler and sending a link via email!
I've tried many of the solutions and only one worked for me (which i found trying random things). I already had 'allow display over other apps' turned on (Android/OnePlus 6t) and didn't think it had anything to do with that. But I tried this...
Close the Expo app, go the the app settings and turn off 'allow display over other apps', open the expo app and [when prompted] turn on 'allow display over other apps' again.
That seems to work in my case - at least until the next time.
I recently downloaded the Xcode 8 beta. When I try to open the simulator, it gets stuck on the black Apple screen and I get a crash message for "SpringBoard".
Any ideas? I'm happy to edit if I left out anything.
Thanks in advance!
This is a known issue that is mentioned in the release notes and is related to issues in the download and install process. If you don't follow the installation instructions exactly, you can trip over this issue.
The workaround is rather straight forward:
Using Finder, copy (DON'T MOVE) Xcode-beta.app from /Applications to ~/Desktop
Delete /Applications/Xcode-beta.app
Move Xcode-beta.app from Desktop back to /Applications
I had a similar problem which, with a bit of googling, I managed to solve as it happened with the Xcode 6 Betas too. First of all, make sure that your Xcode-Beta.app is in the Application folder of your computer. Then go Xcode -> Preferences -> Locations. In "Command Line Tools" you will probably find that you have Xcode 7 selected. This is a problem that occurs with having 2 Xcode versions installed. Change it to Xcode 8.
After this, the simulators were still broken for me, so I went to Xcode -> Window -> Devices and delete all of the simulators. Then try a full reboot of your computer. Reopen the devices page and add in the simulators that you would like, and then right click on the Xcode app in your dock, and go "Open Developer Tool -> Simulator". Check that it now boots correctly. If its working so far, then you should be good to run your application. Otherwise try yet another reboot, just to make sure Xcode is refreshed.
Hopefully this solves your problem like it did mine, let me know if not.
SpringBoard failed to launch application with error: 0
If you get above issue make your simulator active window and follow step showed below in picture..
Note : It will delete all app from simulator..
I only use the iOS simulator for testing websites, not actual apps. Today I opened it up and it keeps asking me for an app for it to simulate. If I click cancel, it just quits the simulator.
I've tried deleting preference files, but I'm just not familiar enough with the simulator to know what's going on. How can I just get this back to normal, or satisfy this dialog?
I think you could try the menu
iOS Simulator -> Reset Content and Settings...
This would clean your simulator storage.
Update
According to this link, Cleaning up the iPhone simulator
move to path
/Users/<username>/Library/Application Support/iPhone Simulator/{6.0 / 6.1}
You could try to clean it manually
Ive been trying to add a button to properly exit an Android app, built using Flex 4.6. I have used the command NativeApplication.nativeApplication.exit(); which seems to work on the emulator, and kills off the emulator.
When I run it on a device, it doesnt exit, it actually seems to go to start of the app (my login screen) which is kinda strange.
I hypothesise that something system-wide is holding the app in process or re-starting it. Anyone had any experience with this?
That code should work. I use it in my android flex app with no problem. The application quits correctly and I am dropped back at the home screen. What version of Android are you using? I was using 2.3 when I did this. If you have it running in debug mode, do you see any errors output to the console? Using the debugger will also allow you to see if it is not quitting properly or restarting on quit(you would see the splash screen again if this was the case)