proguard在Android Studio中构建。获取错误

Question

我试图在android studio中为我的发布版本配置proguard，但我收到以下错误和警告：

错误：执行任务“:myAccount_s:ProGuardRelease”失败。

java.io.ioException：无法写入[C:\users\MGI\AndroidStudioProjects\MyProjects\MyAccount_s\Build\Intermediates\类-Proguard\Release\classes.jar]（无法读取[C:\users\MGI\AndroidStudioProjects\MyAccount_s\Build\Intermediates\Breased-AAR\MyAccountProjects\MyLibrary\unspecified\libs\pushtracker-1.3.0-tracfone.jar（；；；；；；！

分级:

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'
}

依赖关系{

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

只有当jackson-databind-2.2.3.jar被多个项目使用时，才会出现这种情况。唯一的解决方法是使用maven central repository，或者创建第三个项目，并在前面使用jackson-databind-2.2.3.jar的项目中使用它作为依赖项。

Answer 2

问题似乎是由相互冲突的许可证、通知和其他文件引起的。而不是排除,检查是否有类似的东西修复了问题：

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'
}