无法为项目启用 DataBinging

Couldn't enable DataBinging for project

当我尝试在新创建的测试项目 (dataBinding {enable=true}) 中启用数据绑定时,我收到消息

Could not set unknown property 'enable' for object of type com.android.build.gradle.internal.dsl.DataBindingOptions.

此外,数据绑定没有自动完成功能。 (但这里是为了 app.dataBinding - 但我不明白如何使用它)

我的app.gradle:

android {
    compileSdkVersion 28
    dataBinding {
        enable = true
    }
    defaultConfig {
        applicationId "com.testapp"
        minSdkVersion 19
        targetSdkVersion 28
    }
    ...
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:28.0.0'
}

和项目 gradle:

buildscript {
    ext{
        kotlin_version = '1.3.21'
        gradleVersion = '3.1.0'
    }
    ...
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

Android Studio 3.3.1,已安装支持库(带有 Android 支持存储库等)

尝试替换

dataBinding
{
    enable = true
}

dataBinding
{
    enabled = true
}