I think I'd tried everything to fix it but failed.
I've downloaded eclipse from here: http://www.eclipse.org/downloads/packages/eclipse-android-developers-includes-incubating-components/neonr
It's the latest eclipse package made to work with android app developing.
AND
I've downloaded and installed Android Sdk from:
https://dl.google.com/android/installer_r24.4.1-windows.exe
https://dl.google.com/android/android-sdk_r24.4.1-macosx.zip
That's right, both windows and mac versions.
My Android sdk looks like this.
And I created a new android application project, and I just open a pre-made layout xml file and as soon as I save a change I got this.
'Running Android Lint' has encountered a problem.
Failed
Detail:
Failed
java.lang.UnsupportedOperationException
So, here is the big question, how to fix android lint? Or at least point me the right direction, I've tried this on a PC and on a Mac, same problem.
Update: I know android studio and I've used it alot. Let's just say I have my reasons to pick up eclipse and make it work again.