Android studio 0.4.2: Gradle project sync failed error

Android studio 0.4.2: Gradle project sync failed error

Solution 1:
File -> Invalidate caches / Restart
Shutdown Android Studio
Rename/remove .gradle folder in the user home directory
Restart Android Studio let it download all the Gradle stuff it needs
Gradle build success !
Rebuild project.... success !
Out of curiousity I compared the structure of the old .gradle and the new one... they were pretty different !

So I'll see how 0.4.2 goes :)
Solution 2:

I had same problem but finally I could solve it forever
Steps:

1. Delete gradle and .gradle folders from your project folder.
2. In Android Studio: Open your project then: File -> settings -> compiler -> gradle: enable offline mode
   Note: In relatively newer Android Studios, Offline mode has been moved to gradle setting. 
3. Close your project: File -> close project
4. Connect to the Internet and open your project again then let Android Studio downloads what it wants

If success then :)
else

5. If you encounter gradle project sync failed again please follow these steps:
6. Download the latest gradle package from this directory
7. Extract it and put it somewhere (for example f:\gradle-1.10)
8. Go to your Android Studio and load your project then open File->Settings->gradle, in this page click on Use local gradle distribution
9. Type your gradle folder address there
   

Congratulation you are done!