Android Question Resetting for cold boot: emulation engine failed

[ThePuiu]

I made an application that works well on Android 9 but on Android 10 it gives an error when transferring a file to the server. I tried to create a simulator for version 30 (I don't have an Android 10 phone to test) but when it starts I get the error message from the title (and attached image). In the SDK Manager I installed all the options related to version 30.

What else should I try? Thanks!

 

[Erel]

it gives an error when transferring a file to the server

Which error?

 

[ThePuiu]

I guess it's a catch. The message received from the server is: {"Message": "An error has occurred"}. The message is not related to the B4A application but to the server.

 

[ThePuiu]

what about my emulator error?

 

[MikeSW17]

what about my emulator error?

Not actually a B4A issue is it?
I suggest you refer to the Emulator documentation/support channel.
Maybe use a different emulator.

 

[ThePuiu]

I installed Android Studio and launched the emulator there. When compiling in B4A everything goes well until the application is installed in the emulator when it gives the error message:

adb: failed to install SmartCity.apk: Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES: Scanning Failed.: No signature found in package of version 2 or newer for package xxi.smartcity]


after installing Android Studio, when launching AVD Manager from B4A, it crashes like in attached image.

 

[MikeSW17]

Where does Android Studio come into this? It's not needed for B4A, so why have you installed it?
Overall, I get the feeling you have not followed the B4A install instructions https://www.b4x.com/b4a.html properly.
Do no less OR MORE than described in those instructions.