android studio 已有NDK代码并且包含application.mk android.mk 使用ndkcmd 直接编译

从传统的NDK编译过渡到android studio 中去编译，不管如何改变，ndkcmd编译始终是支持的，

所以如下的配置，不管是新项目还是移植项目都是支持的，算是一种通用的配置。

依赖关系通过 mk文件维护

1，在APP module中的build.gradle中添加

Android{

task ndkBuild(type: org.gradle.api.tasks.Exec) {
workingDir file('src/main')
//        workingDir file('src/main/TrulyHandsfreeSDK')
commandLine  getNdkBuildCmd()
}
tasks.withType(JavaCompile) {
compileTask -> compileTask.dependsOn ndkBuild
}
task cleanNative(type: Exec) {
workingDir file('src/main')
commandLine getNdkBuildCmd(),'clean'
}
clean.dependsOn cleanNative

}

 

def getNdkDir() {
if(System.env.ANDROID_NDK_ROOT !=null)
returnSystem.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 newGradleException("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.cmd"
//    def ndkbuild ="E\\:\\adt\\sdk\\ndk-bundle\\ndk-build.cmd"
/*if (Os.isFamily(Os.FAMILY_WINDOWS))
ndkbuild += ".cmd"*/
return ndkbuild
}

 

 

然后使用ndkBuild task编译即可: