添加androidx后未编译项目。房间：房间编译器：2.1.0-alpha05

Question

错误：找不到符号类DataBindingComponent

    dependencies 
    {
        implementation 'androidx.room:room-runtime:2.1.0-alpha05'
        annotationProcessor 'androidx.room:room-compiler:2.1.0-alpha05'
  
    }
-----------------------------------------------------------------------------
    allprojects {
        repositories {
            jcenter()
            maven { url "https://jitpack.io" }
            google()
            maven { url "https://kotlin.bintray.com/kotlinx/" }
        }
    }

Answer 1

嘿，我也遇到过类似的问题，这是显示的错误：

Searched in the following locations:
  - file:/Users/4leyam/Library/Android/sdk/extras/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.pom
  - file:/Users/4leyam/Library/Android/sdk/extras/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.jar
  - file:/Users/4leyam/Library/Android/sdk/extras/google/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.pom
  - file:/Users/4leyam/Library/Android/sdk/extras/google/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.jar
  - file:/Users/4leyam/Library/Android/sdk/extras/android/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.pom
  - file:/Users/4leyam/Library/Android/sdk/extras/android/m2repository/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.jar
  - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.pom
  - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.jar
  - https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.pom
  - https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-metadata-jvm/0.0.5/kotlinx-metadata-jvm-0.0.5.jar
Required by:
    project :app > androidx.room:room-compiler:2.1.0-alpha05

我找到的临时解决方案是将room_版本降级为

 def room_version = "2.1.0-alpha04"

如果有更好的解决办法请分享

Answer 2

我摆脱了这个错误升级gradle构建插件到3.3.2：

dependencies {
    classpath 'com.android.tools.build:gradle:3.3.2'
    classpath 'com.google.gms:google-services:4.2.0'
    classpath 'io.fabric.tools:gradle:1.27.1'
}

该版本将产生一些由io引起的警告。fabric插件，如果您一直在使用它（请参阅API“variant.getExternalNativeBuildTasks（）”已过时，并已替换为“variant”。getExternalNativeBuildProviders（）。

Answer 3

添加maven{url”https://kotlin.bintray.com/kotlinx/“}到您的项目存储库。

房间2.1.0-alpha05取决于kotlinx元数据jvm工件，该工件目前在Maven Central中不可用

参考官方文件