title: ProGuard obfuscate classes names not working
body: <p>I know there are some classes which should not be obfuscated but I want the other classes be renamed like adapters ,utilities, etc.  I am not interesting to make the project runnable for now. </p>
  
  <p>Gradle File:    </p>
  
  <pre><code>buildscript {
    repositories {
      maven { url 'https://maven.fabric.io/public' }
    }
  
    dependencies {
      classpath 'io.fabric.tools:gradle:1.+'
    }
  }
  apply plugin: 'com.android.application' 
  apply plugin: 'io.fabric'
  
  repositories {
    jcenter()
    maven { url 'https://maven.fabric.io/public' }
    maven { url "https://jitpack.io" }
  }
  
  
  android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    useLibrary 'org.apache.http.legacy'
  
    defaultConfig {
      multiDexEnabled true
      applicationId "com.afaqy.gps"
      minSdkVersion 15
      targetSdkVersion 17
      versionCode 39
      versionName "2.10"
      generatedDensities = []
    }
    buildTypes {
      release {
          minifyEnabled true
          debuggable false
          shrinkResources true
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
      debug {
          debuggable false
          minifyEnabled true
          shrinkResources true
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
    }
  
    lintOptions {
      abortOnError false
      checkReleaseBuilds false
    }
  
    dexOptions {
      javaMaxHeapSize "4g" //specify the heap size for the dex process
    }
  
    // This is handled for you by the 2.0+ Gradle Plugin
    aaptOptions {
      additionalParameters "--no-version-vectors"
    }
  }
  
  dependencies {
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.android.volley:volley:1.0.0'
    compile 'com.jakewharton:disklrucache:2.0.2'
    compile 'com.android.support:appcompat-v7:23.0.0'
    compile 'com.android.support:cardview-v7:23.0.0'
    compile 'com.baoyz.pullrefreshlayout:library:1.2.0'
    compile project(':_LibSlideDateTimePicker')
    compile('io.socket:socket.io-client:0.6.3') {
      exclude group: 'org.json', module: 'json'
    }
    compile 'com.splitwise:tokenautocomplete:2.0.8@aar'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile 'com.google.firebase:firebase-messaging:9.4.0'
    compile 'com.github.paolorotolo:appintro:4.1.0'
    compile 'com.wang.avi:library:2.1.3'
    compile('com.crashlytics.sdk.android:crashlytics:2.6.8@aar') {
      transitive = true;
    }
    compile 'com.android.support:recyclerview-v7:23.1.1'
    compile 'pl.bclogic:pulsator4droid:1.0.3'
    compile 'com.android.support:multidex:1.0.1'
    compile 'com.kyleduo.switchbutton:library:1.4.6'
    compile 'com.android.support:design:23.0.0'
    compile 'com.github.PhilJay:MPAndroidChart:v3.0.2'
    compile 'com.android.support:support-v4:23.+'
    compile 'com.daimajia.swipelayout:library:1.2.0@aar'
    compile 'me.leolin:ShortcutBadger:1.1.18@aar'
    compile 'su.j2e:rv-joiner:1.0.9'
    compile 'ca.barrenechea.header-decor:header-decor:0.2.8'
  }
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>Top-level build file</p>
  
  <pre><code>buildscript {
     repositories {
      jcenter()
      maven { url 'https://maven.fabric.io/public' }
    }
    dependencies {
      classpath 'com.android.tools.build:gradle:1.5.0'
      classpath 'com.google.gms:google-services:3.0.0'
      classpath 'io.fabric.tools:gradle:1.+'
    }
  }
  
  allprojects {
    repositories {
      jcenter()
    }
  }
  </code></pre>
  
  <p>proguard-rules.pro (#only okio to be able to generate signed apk)</p>
  
  <pre><code>-dontwarn okio.**
  </code></pre>
  
  <p>Also in the gradle of library i used this in buildTypes. </p>
  
  <pre><code>consumerProguardFiles 'proguard-rules.pro'
  </code></pre>
  
  <p>All classes is retrieved with the original name. </p>
  
  <p>Any idea what I did wrong ? What I missed in my configuration file which is not obfuscating classes names ?</p>