在library中设置buildConfigField无用

描述的现象：

设置buildConfigField的IS_PUBLIC无用

一个app，两个module，一个是application module，另外一个是library module；

在library中设置buildConfigField，如下

release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
buildConfigField("boolean", "IS_PUBLIC", "true")
}

debug{
buildConfigField("boolean", "IS_PUBLIC", "false")
}

用来控制http及debug在测试环境，和正式环境的不同；

然而，无论如何都只能得到IS_PUBLIC为false；

最后子stackoverflow上得到了解决

http://stackoverflow.com/questions/20176284/buildconfig-debug-always-false-when-building-library-projects-with-gradle

解决方法如下

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')
}

亲测好用！