First of all I know that this question already exists in stackoverflow, but I can't solve it, although I tried suggestions like not using -injar, using packagingOptions, etc
I know the release is going to work, but I like clean builds. When I generate signed apks. After a project clean, I get those errors:
Warning:can't write resource [.readme] (Duplicate zip entry [classes.jar:.readme])
Warning:can't write resource [META-INF/LICENSE.txt] (Duplicate zip entry [joda-time-2.8.1.jar:META-INF/LICENSE.txt])
Warning:can't write resource [META-INF/NOTICE.txt] (Duplicate zip entry [joda-time-2.8.1.jar:META-INF/NOTICE.txt])
Sometimes instead of joda-time-2.8.1.jar there is commons-collections4-4.0.jar (same .readme, licence, notice) warnings.
I tried excluding those with packagingOptions, but it doesn't work.
Here is my module's build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
packagingOptions {
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude '.readme'
}
defaultConfig {
applicationId 'com.example.myapp'
minSdkVersion 15
targetSdkVersion 22
versionCode 1
versionName '0.1'
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:22.2.1'
compile 'org.apache.commons:commons-collections4:4.0'
compile 'org.jsoup:jsoup:1.8.2'
compile 'com.android.support:recyclerview-v7:22.2.0'
compile 'com.android.support:cardview-v7:22.2.0'
compile 'com.android.support:design:22.2.0'
compile 'com.google.android.gms:play-services-gcm:7.5.0'
compile 'joda-time:joda-time:2.8.1'
}
And my proguard-rules.pro file
# Defaults
-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.view.View {
public <init>(android.content.Context);
public <init>(android.content.Context, android.util.AttributeSet);
public <init>(android.content.Context, android.util.AttributeSet, int);
public void set*(...);
}
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers class * implements android.os.Parcelable {
static android.os.Parcelable$Creator CREATOR;
}
-keepclassmembers class **.R$* {
public static <fields>;
}
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.app.Fragment
-keepnames class * implements java.io.Serializable
-keepclassmembers class * implements java.io.Serializable {
static final long serialVersionUID;
private static final java.io.ObjectStreamField[] serialPersistentFields;
!static !transient <fields>;
!private <fields>;
!private <methods>;
private void writeObject(java.io.ObjectOutputStream);
private void readObject(java.io.ObjectInputStream);
java.lang.Object writeReplace();
java.lang.Object readResolve();
}
-keepclasseswithmembernames class * {
native <methods>;
}
-keepclassmembers class * {
public void *ButtonClicked(android.view.View);
}
# Use this to prevent errors in builds.
# usage of org.joda.time in this app does not need org.joda.convert
-dontwarn org.joda.convert.**
# Remove logs. Only when using 'proguard-android-optimize.txt'
-assumenosideeffects class android.util.Log {
public static boolean isLoggable(java.lang.String, int);
public static int v(...);
public static int i(...);
public static int w(...);
public static int d(...);
public static int e(...);
}
Thanks in advance.
EDIT: As requested from a possible duplicate warning (Proguard warnings "can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry)"). User that asked the question, said he is using multiple modules (instead of one) and did not post any files (due to sensitive data), so I don't know if its the same case. Also tried all possible options from the first answer and none of them worked. Other answers didn't work either (except the -dontwarn option which I am not going to use for obvious reasons).
