"Unable to get system library for project" after I upgraded to Android SDK 2.3 and ADT 8.0

android eclipse adt android-sdk-2.3
Jonas picture Jonas · Dec 7, 2010 · Viewed 55.7k times · Source

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

Answer

Richard Le Mesurier picture Richard Le Mesurier · Jan 31, 2011

For me, the problem was that in the Project settings - Android tab, I had no Android version selected.

Related questions

Could not find adb.exe - after upgrade to Android SDK 2.3

I have upgraded my Android SDK to version 2.3 and Android Development Tools 8.0.0. Now in Eclipse, I get an error message: Could not find C:\Program Files (x86)\Android\android-sdk-windows\platform-tools\adb.exe! And I don't have that file. How can …

Read More
Android Development Tool 23.0.0 and Android L Update error in eclipse

I updated my SDK with latest release of Android L and restarted my eclipse i.e running on ADT V.22. But when I Check for update from Hep -> Check for updates, it says No updates were found. I …

Read More
Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;

Since updating to ADT 14 I can no longer build my project. It was building fine prior to updating. The error: [2011-10-23 16:23:29 - Dex Loader] Unable to execute dex: Multiple dex files define Lcom/myapp/R$array; [2011-10-23 16:23:29 - …

Read More