I use MultiDex and ProGuard in my Android app. When I run my app it turns out that proguard runs twice. Here are the tasks after which proguard runs:
:app:transformClassesAndResourcesWithProguardForRelease
ProGuard, version 5.2.1
...
Initializing...
Shrinking...
Obfuscating...
Writing output...
and later:
:app:transformClassesWithMultidexlistForRelease
ProGuard, version 5.2.1
Here is my app's build.gradle file:
buildscript {
repositories {
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
classpath 'io.fabric.tools:gradle:1.20.1'
}
}
apply plugin: 'com.android.application'
apply plugin: 'io.fabric'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "de.majestella"
minSdkVersion 16
targetSdkVersion 22
versionCode 3
versionName "1.0.1"
// Enabling multidex support.
multiDexEnabled true
}
dexOptions {
incremental true
javaMaxHeapSize "2g"
}
buildTypes {
debug {
debuggable true
// ProGuard
minifyEnabled false
}
release {
signingConfig signingConfigs.release
debuggable false
// ProGuard
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro', 'proguard-guava.pro', 'proguard-square-picasso.pro',
'proguard-crashlytics.pro', 'proguard-google-analytics.pro'
}
}
}
repositories {
mavenCentral()
maven {
name = "sonatype"
url = "https://oss.sonatype.org/content/repositories/snapshots/"
}
maven {
name = "sonatypeGoogle"
url = "https://oss.sonatype.org/content/repositories/google-snapshots/"
}
flatDir {
dirs 'libs'
}
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.0.1'
compile 'com.android.support:design:23.0.1'
compile('com.crashlytics.sdk.android:crashlytics:2.5.2@aar') {
transitive = true;
}
compile 'com.android.support:multidex:1.0.1'
compile 'com.google.android.gms:play-services-analytics:8.1.0'
compile "com.google.android.gms:play-services:8.1.0"
}
After the first proguard run (i.e., after :app:transformClassesAndResourcesWithProguardForRelease) I get the following warnings after writing output, so proguard itself works fine here with my rules:
Warning: can't write resource [fabric/com.crashlytics.sdk.android.answers.properties] (Duplicate zip entry [fabric/com.crashlytics.sdk.android.answers.properties])
Warning: can't write resource [fabric/com.crashlytics.sdk.android.beta.properties] (Duplicate zip entry [fabric/com.crashlytics.sdk.android.beta.properties])
Warning: can't write resource [fabric/com.crashlytics.sdk.android.crashlytics-core.properties] (Duplicate zip entry [fabric/com.crashlytics.sdk.android.crashlytics-core.properties])
Warning: can't write resource [fabric/com.crashlytics.sdk.android.crashlytics.properties] (Duplicate zip entry [fabric/com.crashlytics.sdk.android.crashlytics.properties])
Warning: can't write resource [fabric/io.fabric.sdk.android.fabric.properties] (Duplicate zip entry [fabric/io.fabric.sdk.android.fabric.properties])
When the second proguard run takes place after :app:transformClassesWithMultidexlistForRelease I get the following:
Note: android.support.design.widget.CoordinatorLayout calls 'Class.getAnnotation'
Note: com.google.ads.mediation.MediationServerParameters calls 'Field.getAnnotation'
Note: com.google.common.eventbus.AnnotatedSubscriberFinder calls 'Method.getAnnotation'
Note: com.google.common.reflect.Invokable$MethodInvokable calls 'Method.getParameterAnnotations'
Note: d.a.a.a.c calls 'Class.getAnnotation'
Note: d.a.a.a.i calls 'Class.getAnnotation'
Note: android.support.v4.app.ak calls 'Field.getType'
Note: com.google.android.gms.internal.zzsf calls 'Field.getType'
...
This is strange because in the first proguard run I get no warnings/notes like this because of my rules.
Here are my ProGuard rules:
-keep class com.google.common.io.Resources {
public static <methods>;
}
-keep class com.google.common.collect.Lists {
public static ** reverse(**);
}
-keep class com.google.common.base.Charsets {
public static <fields>;
}
-keep class com.google.common.collect.MapMakerInternalMap$ReferenceEntry
-keep class com.google.common.cache.LocalCache$ReferenceEntry
-dontwarn sun.misc.Unsafe
-dontwarn com.google.common.collect.MinMaxPriorityQueue
-keepattributes SourceFile,LineNumberTable,*Annotation*
-keep class com.crashlytics.android.**
-dontwarn com.squareup.okhttp.**
-dontnote org.apache.http.conn.**
-dontnote org.apache.http.params.**
-dontnote android.net.http.**
-dontnote **ILicensingService
-dontnote com.android.vending.billing.IInAppBillingService
-dontwarn com.google.auto.factory.**
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
-dontnote android.support.**
-dontnote com.google.common.util.concurrent.**
-dontnote com.squareup.okhttp.**
-keep class org.jsoup.** { *; }
-keeppackagenames org.jsoup.nodes
-keep class com.google.common.cache.Striped64 { *; }
-keep class com.google.common.** { *; }
-keep class com.daimajia.slider.** { *; }
-dontnote org.jsoup.**
-dontnote com.google.common.**
-keep class com.squareup.picasso.** { *; }
-keep class com.google.android.gms.** { *; }
-keep class com.google.ads.** { *; }
-keep class com.lorentzos.** { *; }
-keep public class com.google.android.gms.* { public *; }
-dontwarn com.google.android.gms.**
-dontnote com.google.android.gms.maps.internal.CreatorImpl
-keep class com.mikepenz.iconics.** { *; }
It seems to me like the second ProGuard run does not use my proguard rules.
Edit: Here is the result of gradlew -q tasks --all: https://gist.github.com/confile/2a15d80980214656f4f1
Why does the second Proguard run raises errors and how can I resolve them?
