我正在尝试在Android项目中使用Google的Speech v1p1beta1库。示例项目有效。无法识别SpeechGrpc

Question

我正在尝试在Android项目中使用Google的语音测试版库（google.cloud.speech.v1p1beta1.Speech）。示例项目有效。

  

无法识别行“ import com.google.cloud.speech.v1p1beta1.SpeechGrpc;”

在build-gradle module-app中插入了对新库的引用：

com.google.cloud:google-cloud-speech:0.62.0-beta
com.google.api.grpc:grpc-google-cloud-speech-v1p1beta1:0.39.0

为了克服这个问题，我还需要参考或更改吗？

构建版本（模块应用）：

apply plugin: 'com.android.application'
apply plugin: 'com.google.protobuf'

ext {
    supportLibraryVersion = '25.4.0'
    grpcVersion = '1.4.0'
}

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.3'

    defaultConfig {
        applicationId "com.google.cloud.android.vuspeech"
        targetSdkVersion 22
        versionCode 1
        versionName '1.0'
    }

    signingConfigs {
        release {
            storeFile file(project.properties.storeFile)
            storePassword project.properties.storePassword
            keyAlias project.properties.keyAlias
            keyPassword project.properties.keyPassword
        }
    }

    productFlavors {
        dev {
            // Minimum version with platform multi-dex support
            minSdkVersion 21
        }
        prod {
            // Minimum version that can run gRPC (TLS extension)
            minSdkVersion 16
        }
    }

    buildTypes {
        debug {
            minifyEnabled false
            multiDexEnabled true
        }
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.release
        }
    }

    configurations.all {
        resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.2'
        resolutionStrategy.force "com.android.support:support-annotations:$supportLibraryVersion"
    }
}

protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.3.0'
    }
    plugins {
        javalite {
            artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
        }
        grpc {
            artifact = "io.grpc:protoc-gen-grpc-java:${grpcVersion}"
        }
    }
    generateProtoTasks {
        all().each { task ->
            task.plugins {
                javalite {}
                grpc {
                    // Options added to --grpc_out
                    option 'lite'
                }
            }
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])

    // Support libraries
    compile "com.android.support:design:$supportLibraryVersion"
    compile "com.android.support:cardview-v7:$supportLibraryVersion"
    compile "com.android.support:recyclerview-v7:$supportLibraryVersion"

    // gRPC
    compile "io.grpc:grpc-okhttp:$grpcVersion"
    compile "io.grpc:grpc-protobuf-lite:$grpcVersion"
    compile "io.grpc:grpc-stub:$grpcVersion"
    compile 'javax.annotation:javax.annotation-api:1.2'
    protobuf 'com.google.protobuf:protobuf-java:3.3.1'

    // OAuth2 for Google API
    compile('com.google.auth:google-auth-library-oauth2-http:0.7.0') {
        exclude module: 'httpclient'
    }
    // Google Cloud Speech beta
    compile('com.google.cloud:google-cloud-speech:0.62.0-beta')
    compile('com.google.api.grpc:grpc-google-cloud-speech-v1p1beta1:0.39.0')

    // Tests
    testCompile 'junit:junit:4.12'
    androidTestCompile 'com.android.support.test:runner:0.5'
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
}