无法使用android-ndk和Android Studio构建项目

Question

我有一个带FFmpeg和其他外部库的android项目.我下载了最新版本的ndk(ndk-r10)并运行了Android Studio 0.8.0.我也在使用最新版本的cygwin运行Windows 8 64位.

我的项目构建没有问题,我将ndk.dir添加到local.properties.当我尝试运行时,我收到此错误消息:

The System cannot find the path specified

Error:Execution failed for task ':app:compileDebugNdk'.
com.android.ide.common.internal.LoggedErrorException: Failed to run command:
C:\Users\John1\AppData\Local\Android\android-ndk-r10\ndk-build.cmd

NDK_PROJECT_PATH=null      
APP_BUILD_SCRIPT=C:\Users\John1\AndroidstudioProjects\android-project\app\build\intermediates\ndk\debug\Android.mk 
APP_PLATFORM=android-18 
NDK_OUT=C:\Users\John1\AndroidstudioProjects\android-project\app\build\intermediates\ndk\debug\obj 
NDK_LIBS_OUT=C:\Users\John1\AndroidstudioProjects\android-project\app\build\intermediates\ndk\debug\lib 
APP_ABI=all

Error Code:
    1
Output:
    The system cannot find the path specified.

寻求建议.谢谢.

Answer 1

使用Android Studio,NDK支持是初步的,您的*.mk文件将被忽略.您可以通过停用默认的NDK集成使Android Studio/gradle重用它们,让它自己调用ndk-build(.cmd),并使用标准libs/位置来集成.so文件:

import org.apache.tools.ant.taskdefs.condition.Os

apply plugin: 'android'

android {
    compileSdkVersion 19
    buildToolsVersion "19.0.3"

    defaultConfig{
        minSdkVersion 15
        targetSdkVersion 19
        versionCode 101
        versionName "1.0.1"
    }

    sourceSets.main {
        jniLibs.srcDir 'src/main/libs'
        jni.srcDirs = [] //disable automatic ndk-build call
    }

    // call regular ndk-build(.cmd) script from app directory
    task ndkBuild(type: Exec) {
        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
            commandLine 'ndk-build.cmd', '-C', file('src/main').absolutePath
        } else {
            commandLine 'ndk-build', '-C', file('src/main').absolutePath
        }
    }

    tasks.withType(JavaCompile) {
        compileTask -> compileTask.dependsOn ndkBuild
    }
}

如果您需要更多信息,请参阅我的博客文章:http://ph0b.com/android-studio-gradle-and-ndk-integration/