Sign_your_app.md

Sign application with signKey (Best way)

• signed with parameters via command line, use them
• If not signed with parameters, use the key.properties

Prerequisites

• Add the following snippet to app:build.gradle -> android { }

android {
    // ...
    signingConfigs {
      release {
        if (findProperty("keyStorePath") != null) {
            storeFile file(findProperty("keyStorePath"))
            storePassword findProperty("keyStorePassword")
            keyAlias findProperty("keyAlias")
            keyPassword findProperty("keyPassword")
        } else {
            def keystoreProperties = new Properties()
            keystoreProperties.load(new FileInputStream(rootProject.file('key.properties')))
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile file(keystoreProperties['storeFile'])
            storePassword keystoreProperties['storePassword']
        }
      }
    }
}

• Use

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

Sign via commandline:

Use this command:

./gradlew assembleRelease -PkeyStorePath=keyStore/signKey -PkeyStorePassword=PASS -PkeyAlias=ALIAS -PkeyPassword=SIGN_PASS

Sign automatically on build (buildApk):

• Create a file named key.properties and add:

keyAlias=ALIAS
keyPassword=KEY_PASS
storeFile=KEY_ADDRESS
storePassword=STORE_PASS
(In the root dir)

On building Android studio will automatically use the signKey