Update doc for Android building ?

[Christian Lohmaier]

Hi *,

On Wed, Aug 16, 2017 at 8:30 AM, Miklos Vajna <vmiklos at collabora.co.uk> wrote:
>
> This is not just about documentation; the root of the problem is that
> the owncloud lib of the Android app still uses ant,

FYI: In the meantime I added a gradle wrapper around it, so ant
supporting sdk-tools are no longer necessary/our build doesn't use the
ant toolchain anymore for that.

> while Google already
> dropped support for building with ant as far as I understand.

Yes, but you could still use it with the old sdk-tools, i.e. using
content of https://dl.google.com/android/repository/tools_r25.2.5-linux.zip
as your $ANDROID_SDK/tools

> Christian, do you remember what is the latest SDK we should recommend
> that is still capable of building the ownCloud library?

when it comes to SDK it is confusing with android toolchain, since
there are sdk-tools, build-tools, and actual SDK, and on top of that
the NDK.

> (I simply installed the latest one a while ago and did not update since
> then.)

True again now - i.e. when you get everything from stable channel the
latest tools will work, if you want to do some bisecting, keep the old
sdk-tools around (and in that case also a physical device/older
version of the emulator base).

ciao
Christian