Try going to Project -> Properties -> Java Build Path -> Order & Export and ensure Android Private Libraries are checked for your project and for all other library projects you are using. Clean all projects afterwards and see what happens.
THIS IS A POSSIBLE WORKAROUND FOR BUGS IN ADT 22.6.0 ONLY, THESE BUGS SUBSEQUENTLY FIXED IN FOLLOWING BUILDS Download and install new ADT v22.6.1 from here (zip) or use SDK manager to update Seems like some bug from Google side, this problem found after “ADT 22.6” update. Widely reported on “Android Open Source Project – … Read more
Google has released ADT v23.0.2. This solved many problems of previous ADT version 23. Step-by-step: Menu Help → Install New Software… For “Work with”, select the Android source https://dl-ssl.google.com/android/eclipse Tick ADT v23.0 for installation, then click “Next” Eclipse will show “Install Remediation Page” since there is conflict with previous version. (If it does not, see … Read more
Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;
Quoting Streets of Boston from his adt-dev post: When upgrading, the ‘Order and Export’ of the new ‘Android Private Libraries’ is not always checked. And the android-support-v4.jar is now in this ‘Android Private Libraries’ section. To fix this, go to ‘Order and Export’ and check ‘Android Private Libraries’. Then refresh/clean/rebuild. After you done this ‘fix’ … Read more