通过Android Studio添加osmdroid库（Gradle）

我对移动开发非常陌生，并尝试开发一个简单的android应用。对于我的项目，我需要OSM（开放的街道地图或更准确的osmdroid。我尝试按照以下说明进行操作：https : //github.com/osmdroid/osmdroid/wiki/How-to-add-the-osmdroid-library-via- Gradle，但不幸的是，这对我不起作用，我认为我只是在错误的位置插入了代码。

那就是现在的地方。这是“ build.gradle（：app）”内部的代码：

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.core:core-ktx:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

    implementation 'org.osmdroid:osmdroid-android:(6.1.6)'
    implementation 'org.osmdroid:osmdroid-wms:(6.1.6)'
    implementation 'org.osmdroid:osmdroid-mapsforge:(6.1.6)'
    implementation 'org.osmdroid:osmdroid-geopackage:(6.1.6)'

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

如果我尝试同步，这是错误消息：

FAILURE: Build failed with an exception.

 * What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
   > Could not find org.osmdroid:osmdroid-android:(6.1.6).
     Required by:
         project :app
   > Could not find org.osmdroid:osmdroid-wms:(6.1.6).
     Required by:
         project :app
   > Could not find org.osmdroid:osmdroid-mapsforge:(6.1.6).
     Required by:
         project :app
   > Could not find org.osmdroid:osmdroid-geopackage:(6.1.6).
     Required by:
         project :app

 * Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

 * Get more help at https://help.gradle.org