Support SDK 25?

[DRSDavidSoft]

It seems that the minimum supported SDK version is currently 26. Is it possible to also support SDK 25 (i.e., Android 7)? I have a LineageOS device for which only ROMs up to Android 7 are available, thus the installation fails:

Failed to install B:\app-release.apk: Failure [INSTALL_FAILED_OLDER_SDK: Failed parse during installPackageLI: /data/app/vmdl1785514132.tmp/base.apk (at Binary XML file line #7): Requires newer sdk version #26 (current version is #25)]

[tejado]

What is the kernel version of your ROMs? There is a hard dependency on the kernel so in most cases it does not make sense to support lower SDKs.

[goshil]

https://github.com/tejado/android-usb-gadget/issues/5#issuecomment-829245262

[DRSDavidSoft]

@tejado I see, the Android SDK 25 on my LineageOS device has the kernel version 3.4.67, which is too old to support this. May I suggest that instead of limiting the minimum supported Android SDK the app checks for the kernel available?

It is possible to flash a kernel with Linux 4.x on this device, which supports the same ROM. That way, the kernel version is independent of the actual Android version (e.g. 7.1.2 in this case).

[tejado]

@DRSDavidSoft Yes, please see https://github.com/tejado/android-usb-gadget/issues/2 for it. Feel free to create an PR for it :) And in most ROM's, the SDK version is related to the kernel version. It was easier to use this as a first check then implementing something like mentioned in the issue https://github.com/tejado/android-usb-gadget/issues/2

[tejado]

I will close this as it is basically also a duplicate of https://github.com/tejado/android-usb-gadget/issues/5