dsl

I went ahead and downloaded the project from the link you provided: http://javapapers.com/android/android-chat-bubble/ Since this is an old tutorial, you simply need to upgrade the software, gradle, the android build tools and plugin. Make sure you have the latest Gradle and Android Studio: https://www.gradle.org/ http://tools.android.com/tech-docs/new-build-system/version-compatibility build.gradle: app/build.gradle: Then run gradle: