how to use old android studio project
File->Project Structure->Project pane->"Android plugin version".
Make sure you don't confuse the Gradle version with the Android plugin version. The former is the build system itself, the latter is the plugin to the build system that knows how to build Android projects
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But when using the gradle plugin 0.7.+, Android Studio needs Gradle 1.8. So, you have to update Gradle from 1.7 to 1.8. This was done by going to Tools -> Android -> Sync Project with Gradle Files It forces Android Studio to give out Error message you see on http://tools.android.com/recent