I'm using an Amlogic TV Box with Android 9.
I'm trying to get an app to launch at startup, but the app will not launch.
The method I'm using is:
/data/local/userinit.sh
#!/system/bin/sh
am start com.package.name
or
#!/system/bin/sh
am start com.package.name/com.package.name.ActivityName
This version of Android does not have the Auto-start manager in settings to do it the easy way.