在 Android Studio 中使用 OpenCV 原生代码

我在C++年创建了一个OpenCV项目，并希望在Android设备上运行它。我试图设置我的安卓项目来运行本机代码，但没有成功。我目前面临此错误：

错误：（23,0）找不到 Gradle DSL 方法："compile（）"

我使用以下 github 示例作为基础进行原生 android 开发：https://github.com/jlhonora/opencv-android-sample

到目前为止，我已经做了以下操作来尝试让 gradle 正确同步：

将项目属性更新为如下所示：

ndk.dir=C:\Android\sdk\ndk-bundle
sdk.dir=C:\Android\sdk
opencv.dir=C:\Android\OpenCV-android-sdk

导入 {OpenCV_DIR}\sdk\java 作为模块，并将其添加为项目结构设置中的模块依赖项

这是opencv-sample-master\build.gradle：

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle-experimental:0.7.0-beta1'
    }
}
allprojects {
    repositories {
        jcenter()
    }
}
task clean(type: Delete) {
    delete rootProject.buildDir
}
dependencies {
    compile project(':OpenCVLib')
}

这是项目的build.gradle：

apply plugin: 'com.android.model.application'
model {
android {
    compileSdkVersion = 23
    buildToolsVersion = "23.0.2"
    defaultConfig.with {
        applicationId = "org.honorato.opencvsample"
        minSdkVersion.apiLevel = 15
        targetSdkVersion.apiLevel = 23
        versionCode = 1
        versionName = "1.0"
    }
    ndk {
        moduleName = "native"
        cppFlags.add("-I${file(getOpenCVDir())}".toString())
        cppFlags.add("-frtti")
        cppFlags.add("-fexceptions")
        ldLibs.addAll(["log", "opencv_java3"])
        stl    = "gnustl_static"
    }
}
android.buildTypes {
    release {
        // minifyEnabled = false
        // proguardFiles = getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
android.productFlavors {
    // for detailed abiFilter descriptions, refer to "Supported ABIs" @
    // https://developer.android.com/ndk/guides/abis.html#sa
    create("arm") {
        ndk.abiFilters.add("armeabi")
        ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi')}".toString())
    }
    create("arm7") {
        ndk.abiFilters.add("armeabi-v7a")
        ndk.ldFlags.add("-L${file('src/main/jniLibs/armeabi-v7a')}".toString())
    }
    create("arm8") {
        ndk.abiFilters.add("arm64-v8a")
        ndk.ldFlags.add("-L${file('src/main/jniLibs/arm64-v8a')}".toString())
    }
  }
}
def getOpenCVDir() {
   Properties properties = new Properties()
   properties.load(new File(rootDir.absolutePath +     "/local.properties").newDataInputStream())
   def externalModuleDir = properties.getProperty('opencv.dir', null)
   if (externalModuleDir == null) {
       throw new GradleException(
               "OpenCV location not found. Define location with opencv.dir in the local.properties file!")
   }
   return externalModuleDir
 }
dependencies {
   compile fileTree(dir: 'libs', include: ['*.jar'])
   compile 'com.android.support:appcompat-v7:23.1.1'
   compile project(':openCVLibrary300')
}

最后，opencv 库的 build.gradle：

apply plugin: 'com.android.library'
dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    compile project(':{DIR}:workspace:appcompat_v7')
}
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }    
        // Move the tests to tests/java, tests/res, etc...
        instrumentTest.setRoot('tests')
        // Move the build types to build-types/<type>
        // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
        // This moves them out of them default location under src/<type>/... which would
        // conflict with src/ being used by the main source set.
        // Adding new build types or product flavors should be accompanied
        // by a similar customization.
        debug.setRoot('build-types/debug')
        release.setRoot('build-types/release')
    }
}

如果有人可以帮助我解决这个问题以及如何开始使用opencv进行本机Android开发，我将不胜感激！