"Unable to get system library for project" after I upgraded to Android SDK 2.3 and ADT 8.0
Today I upgraded to Android SDK 2.3 and I also upgraded the Eclipse Plugin Androi Developer Tools 8.0 (from 0.9.9). I also upgraded my Java Development Kit to 1.6_22.
Now in Eclipse I get many errors in all my Android projects.
The error messages are like:
The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files.
How can I fix this so I can use my Android projects again?
In the Build Path for these projects, I don't have any references to an android.jar but a message:
Unable to get system library for project
Solution 1:
For me, the problem was that in the Project settings - Android tab, I had no Android version selected.
Solution 2:
That is rather difficult to answer, given the limited information you have supplied. Here are some suggestions:
Make sure that an appropriate
android.jaris in your build path, since that is wherejava.lang.Objectwould come from.Do a Project > Clean, to make sure you have 1.6
.classfiles, in case that is part of the problem.Try creating a new project from scratch and see if that works.
Solution 3:
I had this problem even though I had a valid target selected. I fixed it by changing to a different target, applying changes and then changing back. That seems to have sorted it.
Solution 4:
Project->Properties->Android : Select another Android Target (in my case Android 4.0.3) -> Apply changes. THEN select again your default Android Target, and that is all.
Hope this help.
Solution 5:
This problem was caused for my old projects on a new machine that did not have an older Android SDK installed.
To fix, simply go into project.properties and observe your old version number:
# Project target.
target=Google Inc.:Google APIs:3
Simply update the version number, like so:
# Project target.
target=Google Inc.:Google APIs:7
You will find that Eclipse then picks up the right SDK version and starts working.