gradlew

I've been trying to get ActionBarSherlock to work and having some issue. One issue I've come across is the following message when trying to build it: Plugin with id 'android-library' not found Specifically: D:\Projects\Android\actionbarsherlock>D:\Projects\Android\gradlew --info build Starting Build Settings evaluated using empty settings script. Projects loaded. Root project using build file 'D:\Projects\Android\actionbarsherlock\build.gradle'. Included projects: [root project 'actionbarsherlock'] Evaluating root project 'actionbarsherlock' using build file 'D:\Projects\Android

I am trying to understand how the Gradle Wrapper works. In many source repos, I see the following structure: projectRoot/ src/ build.gradle gradle.properties settings.gradle gradlew gradlew.bat gradle/ wrapper/ gradle-wrapper.jar gradle-wrapper.properties My questions: How/when does one generate gradlew / gradlew.bat ? Are you supposed to generate them only one time when the project is first created, do you generate them every time you commit/push changes? And how are they generated? Same question above, but for the gradle/wrapper/* files ( gradle-wrapper.jar and gradle-wrapper.properties )?

The Problem is that i am able to run my app when i change to debug mode but it fails when i switch to release mode. Exception: FAILURE: Build failed with an exception. Execution failed for task ':app:transformClassesWithDexForRelease'. com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/bin/java'' finished with non-zero exit value 1