title: Gradle finished with non-zero exit value 1 (ic_launcher.png: error: Duplicate file)
body: <p>I got this strange error with gradle, please help me!</p>
  
  <pre><code>/.../app/build/intermediates/res/debug/drawable-xxhdpi-v4/ic_launcher.png:
      error: Duplicate file
  /.../app/build/intermediates/res/debug/drawable-xxhdpi/ic_launcher.png:
      Original is here. The version qualifier may be implied.
  Error:Execution failed for task ':app:processDebugResources'.
  com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException:
  Process 'command '/.../sdk/build-tools/22.0.1/aapt'' finished with non-zero exit value 1
  </code></pre>
  
  <p>Before it was operating normally, but since I put classpath <strong>com.android.tools.build:gradle:1.2.2</strong>, this causes me errors</p>