Fix proguard

build/android/ant/apk-obfuscate.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
     Copyright (C) 2005-2008 The Android Open Source Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0
 
@@ skipping 11 matching lines @@
   <property name="out.dir" value="bin" />
   <property name="out.absolute.dir" location="${out.dir}" />
   <property name="out.classes.absolute.dir" location="${out.dir}/classes" />
   <property name="out.manifest.abs.file" location="${out.dir}/AndroidManifest.xml" />
 
   <!-- tools location -->
   <property name="sdk.dir" location="${ANDROID_SDK_ROOT}"/>
   <property name="target" value="android-${ANDROID_SDK_VERSION}"/>
   <property name="android.tools.dir" location="${sdk.dir}/tools" />
 
+  <property name="project.target.android.jar" location="${ANDROID_SDK_JAR}" />
+  <path id="project.target.class.path">
+    <pathelement location="${project.target.android.jar}" />
+  </path>
+
 
   <!-- jar file from where the tasks are loaded -->
   <path id="android.antlibs">
       <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
   </path>
 
   <!-- Custom tasks -->
   <taskdef resource="anttasks.properties" classpathref="android.antlibs" />
 
   <!-- Classpath for javac -->
@@ skipping 21 matching lines @@
     <if condition="${project.is.testapp}">
       <then>
         <!-- get the project manifest package -->
         <xpath input="${out.manifest.abs.file}"
                 expression="/manifest/@package" output="project.app.package" />
         <property name="create.test.jar.file"
           location="${CREATE_TEST_JAR_PATH}" />
         <script language="javascript" src="${create.test.jar.file}"/>
       </then>
     </if>
-    <if condition="${proguard.enabled}">
+    <if>
+      <condition>
+        <and>
+          <istrue value="${proguard.enabled}"/>
+          <equals arg1="${CONFIGURATION_NAME}" arg2="Release"/>
+        </and>
+      </condition>
       <then>
         <property name="obfuscate.absolute.dir" location="${out.absolute.dir}/proguard"/>
         <property name="preobfuscate.jar.file" value="${obfuscate.absolute.dir}/original.jar"/>
         <property name="obfuscated.jar.file" value="${OBFUSCATED_JAR_PATH}"/>
         <property name="obfuscated.jar.abs.file" location="${obfuscated.jar.file}"/>
 
         <!-- Add Proguard Tasks -->
         <property name="proguard.jar" location="${android.tools.dir}/proguard/lib/proguard.jar"/>
         <taskdef name="proguard" classname="proguard.ant.ProGuardTask" classpath="${proguard.jar}"/>
 
@@ skipping 53 matching lines @@
           -dump         "${obfuscate.absolute.dir}/dump.txt"
           -printseeds   "${obfuscate.absolute.dir}/seeds.txt"
           -printusage   "${obfuscate.absolute.dir}/usage.txt"
           -printmapping "${obfuscate.absolute.dir}/mapping.txt"
         </proguard>
       </then>
     </if>
     <touch file="${STAMP}" />
   </target>
 </project>