title: Android - Proguard and retrofit 2?
body: <p>I am using from <code>Proguard</code> for my project and bellow code is in my <code>proguard-rules.pro</code> :</p>
  
  <pre><code># Retrofit
  -keep class com.google.gson.** { *; }
  -keep class com.google.inject.** { *; }
  -keep class org.apache.http.** { *; }
  -keep class org.apache.james.mime4j.** { *; }
  -keep class javax.inject.** { *; }
  -keep class javax.xml.stream.** { *; }
  -keep class retrofit.** { *; }
  -keep class com.google.appengine.** { *; }
  -keepattributes *Annotation*
  -keepattributes Signature
  -dontwarn com.squareup.okhttp.*
  -dontwarn rx.**
  -dontwarn javax.xml.stream.**
  -dontwarn com.google.appengine.**
  -dontwarn java.nio.file.**
  -dontwarn org.codehaus.**
  
  -dontwarn retrofit2.**
  -dontwarn org.codehaus.mojo.**
  -keep class retrofit2.** { *; }
  -keepattributes Exceptions
  -keepattributes RuntimeVisibleAnnotations
  -keepattributes RuntimeInvisibleAnnotations
  -keepattributes RuntimeVisibleParameterAnnotations
  -keepattributes RuntimeInvisibleParameterAnnotations
  
  -keepattributes EnclosingMethod
  -keepclasseswithmembers class * {
      @retrofit2.http.* &lt;methods&gt;;
  }
  -keepclasseswithmembers interface * {
      @retrofit2.* &lt;methods&gt;;
  }
  # Platform calls Class.forName on types which do not exist on Android to determine platform.
  -dontnote retrofit2.Platform
  # Platform used when running on RoboVM on iOS. Will not be used at runtime.
  -dontnote retrofit2.Platform$IOS$MainThreadExecutor
  # Platform used when running on Java 8 VMs. Will not be used at runtime.
  -dontwarn retrofit2.Platform$Java8
  # Retain generic type information for use by reflection by converters and adapters.
  -keepattributes Signature
  # Retain declared checked exceptions for use by a Proxy instance.
  -keepattributes Exceptions
  
  # Add any classes the interact with gson
  # the following line is for illustration purposes
  -keep class com.example.asheq.zanis_postmans.ListAddressesActivity
  -keep class com.example.asheq.zanis_postmans.ListOrderActivity
  -keep class com.example.asheq.zanis_postmans.LoginActivity
  -keep class com.example.asheq.zanis_postmans.SendReportsActivity
  -keep class com.example.asheq.track.TrackLocationService
  -keep class com.example.asheq.track.TrackLocationApplication
  
  # Hide warnings about references to newer platforms in the library
  -dontwarn android.support.v7.**
  # don't process support library
  -keep class android.support.v7.** { *; }
  -keep interface android.support.v7.** { *; }
  </code></pre>
  
  <p>But when I run my <code>apk</code> get me crash :</p>
  
  <p><a href="https://i.stack.imgur.com/VaN1O.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VaN1O.png" alt="enter image description here"></a></p>
  
  <p>And bellow is my gradle :</p>
  
  <pre><code>apply plugin: 'com.android.application'
  repositories {
      mavenCentral()
      maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
  }
  android {
      compileSdkVersion 24
      buildToolsVersion "24.0.2"
      defaultConfig {
          applicationId "com.example.asheq.zanis_postmans"
          minSdkVersion 16
          targetSdkVersion 24
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
          multiDexEnabled true
      }
      buildTypes {
          release {
              minifyEnabled true
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(include: ['*.jar'], dir: 'libs')
      androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
          exclude group: 'com.android.support', module: 'support-annotations'
      })
      compile 'com.android.support:appcompat-v7:24.2.1'
      compile 'com.android.support:multidex:1.0.1'
      compile 'com.google.android.gms:play-services:9.6.1'
      compile 'com.squareup.retrofit2:retrofit:2.1.0'
      compile 'com.squareup.retrofit2:converter-gson:2.1.0'
      compile 'org.parceler:parceler-api:1.0.4'
      compile 'com.google.android.gms:play-services:9.6.1'
      compile 'com.google.android.gms:play-services-maps:9.6.1'
      compile 'com.google.android.gms:play-services-places:9.6.1'
      compile 'com.android.support:design:24.2.1'
      compile 'com.google.android.gms:play-services-base:6.5.87'
      compile 'com.google.android.gms:play-services-location:6.5.87'
      compile 'com.google.maps.android:android-maps-utils:0.4.4'
      //compile 'com.squareup.okhttp3:okhttp:3.4.1'
      compile 'com.google.code.gson:gson:2.6.1'
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:cardview-v7:24.2.1'
      compile 'com.android.support:recyclerview-v7:24.2.1'
      compile 'com.michaelpardo:activeandroid:3.1.0-SNAPSHOT'
      compile 'org.greenrobot:eventbus:3.0.0'
      compile 'com.squareup.retrofit:retrofit:1.9.0'
      compile 'com.weiwangcn.betterspinner:library-material:1.1.0'
      //compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'
  }
  </code></pre>
  
  <p>Here is my <code>TrackLocationApplication.class</code> :</p>
  
  <pre><code>public class TrackLocationApplication extends Application {
  
      private static final String KEY_REQUEST_DATA_NAME = "KEY_REQUEST_DATA_NAME";
  
      private LocationRequestData locationRequestData;
      private Location startLocation;
  
      @Override
      public void onCreate() {
          super.onCreate();
  
          //checkAndSetDeviceId();
          checkAndSetUserName();
  
          if (!retrieveLocationRequestData()) {
              //setLocationRequestData(LocationRequestData.FREQUENCY_MEDIUM);
              setLocationRequestData(LocationRequestData.FREQUENCY_HIGH);
          }
          initializeDB();
      }
  
      private boolean retrieveLocationRequestData() {
          String name = PreferenceManager.getDefaultSharedPreferences(this).getString(KEY_REQUEST_DATA_NAME, null);
          if (!TextUtils.isEmpty(name)) {
              LocationRequestData data = LocationRequestData.valueOf(name);
              if (data != null) {
                  locationRequestData = data;
                  return true;
              }
          }
          return false;
      }
  
      public void setLocationRequestData(LocationRequestData requestData) {
          locationRequestData = requestData;
          SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
          preferences.edit().putString(KEY_REQUEST_DATA_NAME, requestData.name()).apply();
      }
  
      public LocationRequestData getLocationRequestData() {
          if (locationRequestData == null) {
              if (!retrieveLocationRequestData()) {
                  setLocationRequestData(LocationRequestData.FREQUENCY_HIGH);
              }
          }
          return locationRequestData;
      }
  
      public Location getStartLocation() {
          return startLocation;
      }
  
      public void setStartLocation(Location startLocation) {
          this.startLocation = startLocation;
      }
  
      public LocationRequest createLocationRequest() {
          LocationRequest locationRequest = new LocationRequest();
          locationRequest.setInterval(locationRequestData.getInterval());
          locationRequest.setFastestInterval(locationRequestData.getFastestInterval());
          locationRequest.setPriority(locationRequestData.getPriority());
          locationRequest.setSmallestDisplacement(locationRequestData.getSmallestDisplacement());
          return locationRequest;
      }
  
  //    private void checkAndSetDeviceId() {
  //        if (TextUtils.isEmpty(TrackLocationPreferencesManager.getDeviceId(this))) {
  //            String deviceId = Utils.getUniqueDeviceId(this);
  //            TrackLocationPreferencesManager.setDeviceId(deviceId, this);
  //        }
  //    }
  
      private void checkAndSetUserName() {
          if (TextUtils.isEmpty(TrackLocationPreferencesManager.getUserName(this))) {
              String userName = android.os.Build.MODEL;
              TrackLocationPreferencesManager.setUserName(userName, this);
          }
      }
  
      private void initializeDB() {
          Configuration.Builder configurationBuilder = new Configuration.Builder(this);
          configurationBuilder.addModelClasses(LocationData.class);
          ActiveAndroid.initialize(configurationBuilder.create());
      }
  
      @Override
      protected void attachBaseContext(Context base) {
          super.attachBaseContext(base);
          MultiDex.install(this);
      }
  }
  </code></pre>