I made App using MIT app Inventor at the stage of testing the app works fine but when i import the .apk file for that app into my mobile and install the app then it stop working why?Can you suggest any solution on this?
Is there a specific error message that appears when the app crashes? What components are you using, particularly in your Screen1.Initialize block (if any)?
If it works with Companion and not with the APK, this is mostly a permission issue.
So ask for eg READ_ / WRITE_EXTERNAL_STORAGE or the permission required at Screen.Inititalize.