未能实现 androidx 生命周期依赖项

Question

我正在学习使用Android Studio，当我想在Gradle中实现生命周期依赖时，同步后出现错误消息。我不明白为什么，但我按照 Android Studio 文档中的指示做了所有事情。 你知道我的错误在哪里吗？enter image description here

val lifecycle_version = "2.5.1"
        val arch_version = "2.1.0"

// ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
// ViewModel utilities for Compose
implementation("androidx.lifecycle:lifecycle-viewmodel-compose:$lifecycle_version")
// LiveData
implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
// Lifecycles only (without ViewModel or LiveData)
implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")

// Saved state module for ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")

// Annotation processor
kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
// alternately - if using Java8, use the following instead of lifecycle-compiler
implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")

// optional - helpers for implementing LifecycleOwner in a Service
implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")

// optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")

// optional - ReactiveStreams support for LiveData
implementation("androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version")

// optional - Test helpers for LiveData
testImplementation("androidx.arch.core:core-testing:$arch_version")

// optional - Test helpers for Lifecycle runtime
testImplementation ("androidx.lifecycle:lifecycle-runtime-testing:$lifecycle_version")

Answer 1

只需更换值和定义. 就我而言，它正在工作。