proguard - obfuscate

باسلام و احترام به دوستان عزیز

من یه برنامه نوشتم و میخواستم که obfuscated رو انجام بدم ولی خطا میده. من از کتابخانه های زیادی استفاده کردم .
فایل build.gradle :

 apply plugin: 'com.android.application'
repositories {
 maven {
 url "https://jitpack.io"
 }
}
android {
 compileSdkVersion 23
 buildToolsVersion "24.0.1"

 defaultConfig {
 applicationId "cardbesines.app.ir.we4you.cardbesines"
 minSdkVersion 16
 targetSdkVersion 23
 versionCode 1
 versionName "1.0"
 }
 buildTypes {
 release {
 minifyEnabled true
 proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
 }
 }

}
repositories {
 jcenter()
}
dependencies {
 compile fileTree(include: ['*.jar'], dir: 'libs')
 testCompile 'junit:junit:4.12'
 
 compile files('libs/itextg-5.5.8.jar')
 compile('com.weiwangcn.betterspinner:library-material:1.1.0') {
 exclude group: 'com.android.support', module: 'appcompat-v7'
 exclude group: 'com.rengwuxian.materialedittext', module: 'library'
 }
 compile 'com.android.support:appcompat-v7:23.4.0'
 compile 'com.android.support:design:23.4.0'
 compile 'com.android.support:recyclerview-v7:23.4.0'
 compile 'com.google.android.gms:play-services-appindexing:8.1.0'
 compile 'com.github.bumptech.glide:glide:3.7.0'
 compile 'com.github.traex.rippleeffect:library:1.3'
 compile 'com.github.manuelpeinado.multichoiceadapter:multichoiceadapter:3.0.0'
 compile 'com.rengwuxian.materialedittext:library:2.1.4'
 compile 'uk.co.chrisjenx:calligraphy:2.2.0'
 compile 'com.squareup.picasso:picasso:2.3.2'
 compile 'com.nineoldandroids:library:2.4.0'
 compile 'com.daimajia.slider:library:1.1.5@aar'
 compile 'com.daimajia.androidanimations:library:1.0.3@aar'
 compile 'com.kyleduo.switchbutton:library:1.4.4'
 compile 'com.githang:com-phillipcalvin-iconbutton:1.0.1@aar'
 compile 'com.android.support:support-v4:23.4.0'
 ////////
 compile 'com.android.support:cardview-v7:23.2.1'
 
}

عکسی از خطا :

فایل proguard-rules.pro :

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html
#
# Starting with version 2.2 of the Android plugin for Gradle, these files are no longer used. Newer
# versions are distributed with the plugin and unpacked at build time. Files in this directory are
# no longer maintained.

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose

# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.

-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService

# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}

# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}

# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keepclassmembers class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator CREATOR;
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

# Understand the @Keep support annotation.
-keep class android.support.annotation.Keep

-keep @android.support.annotation.Keep class * {*;}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <methods>;
}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <fields>;
}

-keepclasseswithmembers class * {
    @android.support.annotation.Keep <init>(...);
}
 

مشکل کار کجاست که خطا میده؟
باید توی پروگارد چی بنویسم که خطا نده . درضمن میخوام با ریلیز کردن حجم برنامه ام بیاد پایین . یعنی درحالت طبیعی حدودا 5 مگابایت بود الان با ساین کردن و ریلیز همراه با خطا شده حدودا 9 مگابایت.

منتظر راهنمایی های شما اساتید با تجربه هستم . 


باتشکر از شما.