Error:All flavors must now belong to a named flavor dimension.

环境

android studio 3.0

错误

Error:All flavors must now belong to a named flavor dimension.

解决

在build.gradle中
android.defaultConfig 添加 flavorDimensions "versionCode"

例如·：

android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion

    defaultConfig {
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode rootProject.ext.versionCode
        versionName rootProject.ext.versionName

        flavorDimensions "versionCode"
    }
...