Gradle任务无法找到local.properties文件

Question

首先,我必须承认我对android和ndk有相当的经验,但gradle脚本对我来说是个新主题.我正在开发一个项目,其gradle脚本已经编写(这不是我的部分)并且工作正常.

我的问题是,一个特定的任务似乎找不到属性定义的ndk.dir,它是在local.properties文件中定义的.

项目结构(简化):

_ <project_root>
|_ <sub_project folder>
    ...
    |_ main
    |_ build.gradle
    |_ local.properties
|_ ...

local.properties文件如下所示:

ndk.dir=/home/ubuntu/dev/android-ndk-r9c

在结构的build.gradle文件中定义的任务的有问题部分如下:

task buildNDKFlavorGooglePlayStore(type: Exec) {
    if (project.ext.has('ndk.dir') && (project.ext.get('ndk.dir') != null)) {
        ext.ndkBuild = new File((String)project.ext.get('ndk.dir'), 'ndk-build')
        executable ndkBuild
    } else {
        throw new GradleException('Reason: ndk.dir is missing in ' + projectDir + '/local.properties')
    }
(...)
}

同步项目时,由于定义了gradle异常而出现错误.

有人可以帮忙吗？你能告诉我是否可以调试它？

先感谢您.如有必要,请随时询问额外信息.

Answer 1

这对我有用:

def getNdkDir() {
    if (System.env.ANDROID_NDK_ROOT != null)
        return System.env.ANDROID_NDK_ROOT

    Properties properties = new Properties()
    properties.load(project.rootProject.file('local.properties').newDataInputStream())
    def ndkdir = properties.getProperty('ndk.dir', null)
    if (ndkdir == null)
        throw new GradleException("NDK location not found. Define location with ndk.dir in the local.properties file or with an ANDROID_NDK_ROOT environment variable.")

    return ndkdir
}

def getNdkBuildCmd() {
    def ndkbuild = getNdkDir() + "/ndk-build"
    if (Os.isFamily(Os.FAMILY_WINDOWS))
        ndkbuild += ".cmd"

    return ndkbuild
}

看这里了解详情.