Je crée un build avec différentes saveurs avec Gradle. Il fonctionnait assez bien jusqu'à présent, jusqu'à ce que je veuille activer Proguard
. J'ai activé minifyEnabled
pour ma version Release et maintenant j'ai une exception disant:
"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.
"
Quelqu'un sait-il ce qui cause cette exception? Je souhaite essentiellement activer ProGuard avant de publier mon application. Voici mon fichier Gradle ci-dessous.
lintOptions {
abortOnError false
}
dexOptions{
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
}
}
Fichier de règles ProGuard.
# 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.**
Et voici le fichier proguard-Android. Il s'agit de celui par défaut de Android SDK.
# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html
-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);
}
-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.**
Il m'a fallu un certain temps pour le comprendre, mais, comme je l'avais deviné, il s'agissait de la configuration de Proguard.
J'ai commencé à fouiller dans les avertissements de la console et j'ai réalisé que certaines références ne pouvaient pas être trouvées par Proguard. Donc, en les ajoutant comme -dontwarn
pour programmer le fichier de configuration a résolu le problème.
Dans mon cas, j'ai dû ignorer les packages ci-dessous;
-dontwarn Java.lang.invoke**
-dontwarn org.Apache.lang.**
-dontwarn org.Apache.commons.**
-dontwarn com.nhaarman.**
-dontwarn se.emilsjolander.**