Android GradleとProGuardでビルド:「出力jarは入力jarの後に指定する必要があります。指定しないと空になります」


Caused by: org.gradle.internal.UncheckedException: Java.io.IOException: The output jar [.../app/build/intermediates/multi-dex/dev/release/componentClasses.jar] must be specified after an input jar, or it will be empty. "


lintOptions {
    abortOnError false

    incremental true
    javaMaxHeapSize "4g"

defaultConfig {
        applicationId "..."
        minSdkVersion 14
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

buildTypes {

    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-Android.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.release

    debug {
        minifyEnabled false
        shrinkResources false
        proguardFiles getDefaultProguardFile('proguard-Android.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.debug


# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /Users/osayilgan/Development/Android/sdk/tools/proguard/proguard-Android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
# For more details, see
#   http://developer.Android.com/guide/developing/tools/proguard.html

# Add any project specific keep options here:

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
#   public *;

-keepnames public class * extends io.realm.RealmObject
-keep class io.realm.** { *; }
-dontwarn javax.**
-dontwarn io.realm.**

そして、これがproguard-Androidファイルです。これは、Android SDKのデフォルトのものです。

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html


# 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).
# 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);

-keep class * implements Android.os.Parcelable {
  public static final Android.os.Parcelable$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.**




-dontwarn Java.lang.invoke**
-dontwarn org.Apache.lang.**
-dontwarn org.Apache.commons.**
-dontwarn com.nhaarman.**
-dontwarn se.emilsjolander.**