Securing keys-Medium

build.gradle

// app/build.gradle
plugins {
    ...
}

android {

   ...

    defaultConfig {
        ...
    }

    buildTypes {
        debug{

            def credsFile = rootProject.file("secure\\debug_creds.properties")
            def prop = new Properties()
            prop.load(new FileInputStream(credsFile))
            buildConfigField('String', 'KEY_USER', prop['KEY_USER']) // always use single quotes here

        }

        release {

            def credsFile = rootProject.file("secure\\release_creds.properties")
            def prop = new Properties()
            prop.load(new FileInputStream(credsFile))
            buildConfigField('String', 'KEY_USER', prop['KEY_USER']) // always use single quotes here


            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }


    }
...


}



dependencies {
...
}