title: Using SimpleXML with Android and Gradle
body: <p>I'm having troubles trying to compile an Android application with Gradle 0.5.+ and Android Studio, using SimpleXML.</p>
  
  <p>This is the error:</p>
  
  <pre><code>Gradle: Execution failed for task ':MyApplication:dexDebug'.
  &gt; Failed to run command:
      /Applications/Android Studio.app/sdk/build-tools/android-4.2.2/dx --dex --output &lt;REALLY_LONG_STRING.....&gt;
    Error Code:
      1
    Output:
      trouble processing "javax/xml/stream/events/StartElement.class":
      Ill-advised or mistaken usage of a core class (java.* or javax.*)
      when not building a core library.
      This is often due to inadvertently including a core library file
      in your application's project, when using an IDE (such as
      Eclipse). If you are sure you're not intentionally defining a
      core class, then this is the most likely explanation of what's
      going on.
      However, you might actually be trying to define a class in a core
      namespace, the source of which you may have taken, for example,
      from a non-Android virtual machine project. This will most
      assuredly not work. At a minimum, it jeopardizes the
      compatibility of your app with future versions of the platform.
      It is also often of questionable legality.
      If you really intend to build a core library -- which is only
      appropriate as part of creating a full virtual machine
      distribution, as opposed to compiling an application -- then use
      the "--core-library" option to suppress this error message.
      If you go ahead and use "--core-library" but are in fact
      building an application, then be forewarned that your application
      will still fail to build or run, at some point. Please be
      prepared for angry customers who find, for example, that your
      application ceases to function once they upgrade their operating
      system. You will be to blame for this problem.
      If you are legitimately using some code that happens to be in a
      core package, then the easiest safe alternative you have is to
      repackage that code. That is, move the classes in question into
      your own package namespace. This means that they will never be in
      conflict with core system classes. JarJar is a tool that may help
      you in this endeavor. If you find that you cannot do this, then
      that is an indication that the path you are on will ultimately
      lead to pain, suffering, grief, and lamentation.
      1 error; aborting
  </code></pre>
  
  <p>build.gradle is configured like that:</p>
  
  <pre><code>dependencies {
      [...]
      compile 'org.simpleframework:simple-xml:2.7.+'
  }
  repositories {
      [...]
      mavenCentral()
  }
  </code></pre>
  
  <p>How can i solve this problem?</p>
  
  <p><strong>EDIT</strong>
  The problem is not present if i install Simple-XML directly as a Jar inside libs/ - of course a maven solution would be cleaner.</p>