title: Android attribute "xxxx" has already been defined
body: <p>I don't know if anyone know this library or have used it ( <a href="https://github.com/johnkil/Print" rel="nofollow">https://github.com/johnkil/Print</a> ) but the main ideea is to make <code>icons</code> from different <code>fonts</code>.</p>
  
  <p>I need it because I need to implement a library that use it ( <a href="https://github.com/bmelnychuk/AndroidTreeView" rel="nofollow">https://github.com/bmelnychuk/AndroidTreeView</a> ).</p>
  
  <p>I get all type of error like: <code>Error:(2) Attribute "iconSize" has already been defined</code> matching other files from other <code>libraries</code> already imported.</p>
  
  <p>Does anyone know how can I solve this ? Is there a way how to make the compiler ignore this ?</p>
  
  <p>My build.gradle file:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 23
      buildToolsVersion "23.0.1"
  
      defaultConfig {
          applicationId "xxxxxxxxxxxxxxxxxx"
          minSdkVersion 16
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
          multiDexEnabled true
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:appcompat-v7:23.1.0'
      compile('org.restlet.jse:org.restlet.ext.httpclient:2.1.2') {
          exclude group: 'org.restlet', module: 'jse'
          exclude group: 'org.restlet.ext', module: 'ss1'
      }
      android {
          packagingOptions {
              exclude 'META-INF/DEPENDENCIES.txt'
              exclude 'META-INF/LICENSE.txt'
              exclude 'META-INF/NOTICE.txt'
              exclude 'META-INF/NOTICE'
              exclude 'META-INF/LICENSE'
              exclude 'META-INF/DEPENDENCIES'
              exclude 'META-INF/notice.txt'
              exclude 'META-INF/license.txt'
              exclude 'META-INF/dependencies.txt'
              exclude 'META-INF/ASL2.0'
              exclude 'META-INF/services/org.restlet.engine.ClientHelper'
          }
      }
      compile 'net.koofr:java-koofr:1.2.8'
      compile 'org.apache.httpcomponents:httpclient:4.3.5'
      compile 'org.restlet.jse:org.restlet.ext.jackson:2.1.2'
      compile 'com.github.dmytrodanylyk.android-process-button:library:1.0.3'
      compile 'com.rengwuxian.materialedittext:library:1.8.3'
      compile 'com.github.navasmdc:MaterialDesign:1.5@aar'
      compile 'com.google.android.gms:play-services:7.0.0'
      compile 'com.android.support:recyclerview-v7:23.0.+'
      compile 'com.baoyz.pullrefreshlayout:library:1.0.1'
      compile('com.mikepenz:materialdrawer:3.1.2@aar') {
          transitive = true
      }
      compile 'com.wnafee:vector-compat:1.0.5'
      compile 'me.drakeet.materialdialog:library:1.2.2'
      //    compile 'com.google.code.gson:gson:2.2.+'
      compile 'com.sothree.slidinguppanel:library:3.1.1'
      compile 'com.github.deano2390:MaterialShowcaseView:1.0.5@aar'
      compile 'com.android.support:multidex:1.0.0'
      compile 'com.github.bmelnychuk:atv:1.2.0'
      compile 'com.victor:lib:1.0.1'
  }
  </code></pre>