Debuggable = false

Para ponerlo debuggable = false en Android Studio

apply plugin: 'com.android.application'

android {
    compileSdkVersion 20
    buildToolsVersion '20.0.0'

    defaultConfig {
        applicationId "com.elpoeta.alejoyvalentinasonidos"
        minSdkVersion 9
        targetSdkVersion 20
        versionCode 2
        versionName "1.0"
    }
    buildTypes {
        debug {
            debuggable false
        }
        release {
            runProguard false
            debuggable false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.google.android.gms:play-services:+'
}