在Android Studio中构建proguard。 得到错误

Question

I am trying to config the proguard in android studio for my release build but I am getting error and warnings below:

Error:Execution failed for task ':myAccount_S:proguardRelease'.

java.io.IOException: Can't write [C:\\Users\\mgi\\AndroidStudioProjects\\MyProjects\\myAccount_S\\build\\intermediates\\classes-proguard\\release\\classes.jar] (Can't read [C:\\Users\\mgi\\AndroidStudioProjects\\MyAccountProjects\\myAccount_S\\build\\intermediates\\exploded-aar\\MyAccountProjects\\myLibrary\\unspecified\\libs\\PushTracker-1.3.0-tracfone.jar(;;;;;;!META-INF/MANIFEST.MF)] (Duplicate zip entry [PushTracker-1.3.0-tracfone.jar:com/mgage/push/tracker/PushManager$1.class])) :myAccount_S:proguardRelease FAILED Warning:can't write resource [META-INF/NOTICE] (Duplicate zip entry [jackson-databind-2.2.3.jar:META-INF/NOTICE]) Warning:can't write resource [META-INF/LICENSE] (Duplicate zip entry [jackson-databind-2.2.3.jar:META-INF/LICENSE])

gradle:

 buildTypes { release { minifyEnabled true proguardFile getDefaultProguardFile('proguard-android.txt') } } packagingOptions { exclude 'META-INF/DEPENDENCIES' exclude 'META-INF/NOTICE' exclude 'META-INF/LICENSE' exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' exclude 'META-INF/MANIFEST' } dependencies { 

buildTypes { release { minifyEnabled true proguardFile getDefaultProguardFile('proguard-android.txt') } } packagingOptions { exclude 'META-INF/DEPENDENCIES' exclude 'META-INF/NOTICE' exclude 'META-INF/LICENSE' exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' exclude 'META-INF/MANIFEST' } dependencies {

 compile project(':facebookSDK') compile 'com.android.support:support-v4:19.1.0' compile 'com.android.support:appcompat-v7:19.1.0' compile 'com.google.android.gms:play-services:6.5.87' compile files('libs/BxLibrary-1.4.14.jar') compile files('libs/commons-io-1.3.2.jar') compile files('libs/jackson-annotations-2.2.3.jar') compile files('libs/jackson-core-2.2.3.jar') compile files('libs/jackson-databind-2.2.3.jar') compile files('libs/libGoogleAnalyticsServices.jar') compile files('libs/PushTracker-1.3.0.jar') compile files('libs/robospice-1.4.14.jar') compile files('libs/robospice-cache-1.4.14.jar') 

}

Answer 1

This can only arise when jackson-databind-2.2.3.jar is being used by more than 1 project. The only resolution is to either use maven central repository or create a third project and use it as a dependency in the projects using jackson-databind-2.2.3.jar earlier.

Answer 2

It seems that the problem is caused by conflicting LICENSE, NOTICE and other files. Instead of excluding, check if something like this fixes the issue:

packagingOptions {
    pickFirst 'META-INF/NOTICE'
    pickFirst 'META-INF/LICENSE'
    pickFirst 'META-INF/MANIFEST'
    pickFirst 'META-INF/LICENSE.txt'
    pickFirst 'META-INF/NOTICE.txt'
    pickFirst 'META-INF/MANIFEST'
}