title: How to build only single buildType with Android Studio and/or Gradle
body: <p>I've several build types in my build.gradle:</p>
  
  <pre><code>signingConfigs {
    debug {
      storeFile file("debug.keystore")
      storePassword = "android"
      keyAlias = "androiddebugkey"
      keyPassword = "android"
    }
    unsigned{
      storePassword = ""
      keyAlias = ""
      keyPassword = ""
    }
    release {
      storeFile file("release.keystore")
      keyAlias "alias"
      storePassword "foo"
      keyPassword "bar"
    }
  }
  
  buildTypes {
    release {
      debuggable false
      jniDebugBuild false
      signingConfig signingConfigs.release
    }
    unsigned {
      debuggable false
      jniDebugBuild false
      signingConfig signingConfigs.unsigned
    }
    debug {
      debuggable true
      jniDebugBuild true
      signingConfig signingConfigs.debug
    }
  }
  </code></pre>
  
  <p>which work fine but the problem is that I don't know (and I haven't find after lot of searching) a way how to build only single build type either from Android Studio or command-line.</p>
  
  <p>Do you please know?</p>