Duplicate files during packaging of APK app-debug-unaligned.apk

You can replace compile files('libs/httpmime-4.3.5.jar') with this compile 'org.apache.httpcomponents:httpmime:4.3.5'.

Also you are duplicating the dependencies compile fileTree(include: ['*.jar'], dir: 'libs') already includes compile files('libs/httpmime-4.3.5.jar')

update your build.gradle and add the following lines

android{
    .
    .
    .
    packagingOptions {
        exclude 'META-INF/license.txt'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/NOTICE'
    }
}

this will fix this error. I got the same error, doing this fixed it.