android studio 0.4.2: Gradle project sync failed error

I'm assuming I can answer my own question....This worked for me.

1. File -> Invalidate caches / Restart
2. Shutdown Android Studio
3. Rename/remove .gradle folder in the user home directory
4. Restart Android Studio let it download all the Gradle stuff it needs
5. Gradle build success !
6. 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 :)

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!

same here, updating to 0.4.2 also broke everything in my case...It has nothing to do with memory usage : I've got 8 gig of memory and I have 3.5 gig free atm, so not having enough memory to start up a JVM is bullocks...

Actually it might have something to do with Gradle versions, I looked into the error log and found this :

2014-01-14 09:00:30,918 [ 61112] WARN - nal.AbstractExternalSystemTask - Project is using an old version of the Android Gradle plug-in. The minimum supported version is 0.7.0. Please update the version of the dependency 'com.android.tools.build:gradle' in your build.gradle files.

You are using Gradle version 1.8, which is not supported. Please use version 1.9. Please point to a supported Gradle version in the project's Gradle settings or in the project's Gradle wrapper (if applicable.) com.intellij.openapi.externalSystem.model.ExternalSystemException: Project is using an old version of the Android Gradle plug-in. The minimum supported version is 0.7.0. Please update the version of the dependency 'com.android.tools.build:gradle' in your build.gradle files

-

You are using Gradle version 1.8, which is not supported. Please use version 1.9.

Please point to a supported Gradle version in the project's Gradle settings or in the project's Gradle wrapper (if applicable.)

OK, I fixed it myself...In the project directory go to /gradle/wrapper directory and edit the gradle-wrapper properties file to this :

distributionUrl=http\://services.gradle.org/distributions/gradle-1.9-all.zip

After open your project in Android Studio and select the build.gradle file in the /src directory and edit it to this :

dependencies {        classpath 'com.android.tools.build:gradle:0.7.+'    }

After fixing it like this I discovered this article :http://tools.android.com/recent/androidstudio040released