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我正在使用proguard来减少我的apk大小.调试apk从90mb减少到55mb,但签名的apk是71mb.这是我的build.gradle代码:

apply plugin:'com.android.application'

android {

signingConfigs {
    XXXX {
        keyAlias 'xxxx'
        keyPassword 'xxxx'
        storeFile file('/Users/xxxx.jks')
        storePassword 'xxxxxx'
    }
}
compileSdkVersion 23
buildToolsVersion "24.0.2"
defaultConfig {
    applicationId "com.xxxx"
    minSdkVersion 14
    targetSdkVersion 22
    versionCode 61
    versionName "4.1.8.1"
    multiDexEnabled true
    signingConfig signingConfigs.XXXX

    ndk {
        abiFilters "armeabi", "armeabi-v7a", "x86", "mips"
    }
}

buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.XXXX
    }
    debug {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        signingConfig signingConfigs.XXXX
    }
}
productFlavors {
}

dexOptions { …

我在Aviary的build.gradle中设置了"applicationId aviarySdkPackageName".我更新了android studio并显示错误:库项目无法设置applicationId.applicationId在默认配置中设置为''.但在删除此行后,Aviary中存在许多错误.你知道我该怎么办？