BuildConfig.DEBUG always false when building library projects with gradle

BuildConfig.DEBUG is not working (= logically set to false) when I run my app in debug mode. I use Gradle to build. I have a library project where I do this check. BuildConfig.java looks like this in the build debug folder:

/** Automatically generated the file. DO NOT MODIFY */
package common.myProject;

public final class BuildConfig {
    public static final boolean DEBUG = Boolean.parseBoolean("true");

}

and in the release folder:

public static final boolean DEBUG = false;

both in the library project and in the application project.

I tried to get around this by checking a variable which is set a class of my project. This class inherits from the library and starts on startup.

<application
        android:name=".MyPrj" ...

This leads to another problem: is that I use my DEBUG variable in a DataBaseProvider which runs before the application class, and it will not run properly due to this bug.

With Android Studio 1.1 and having also the gradle version at 1.1 it is possible:

Library

android {
    publishNonDefault true
}

App

dependencies {
    releaseCompile project(path: ':library', configuration: 'release')
    debugCompile project(path: ':library', configuration: 'debug')
}

Complete documentation can be found here http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Library-Publication

EDIT:

The issue has just been marked as fixed for the Android Studio Gradle Version 3.0. There you can just use implementation project(path: ':library') and it'll select the correct configuration automatically.

This is expected behavior for this.

Library projects only publish their release variants for consumption by other projects or modules.

We're working at fixing this but this is non trivial and requires a significant amount of work.

You can track the issue at https://code.google.com/p/android/issues/detail?id=52962

BuildConfig.DEBUG always false when building library projects with gradle

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