Android 找不到'；core:core common'；满足版本约束的

创建新的Android Studio项目（空活动类型）后，如果添加以下行：

    // Lifecycle/View Models
    def lifecycleVersion = '2.0.0'
    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycleVersion"
    annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycleVersion"

    // Core testing
    def coreTestingVersion = '2.0.1'
    testImplementation "androidx.arch.core:core-testing:$coreTestingVersion"
    androidTestImplementation "androidx.arch.core:core-testing:$coreTestingVersion"

在应用程序的

build.gradle

文件中，您将在尝试运行项目的

connectedCheck

任务时看到错误。见输出：

Zachs-MBP:CoreTestingVersionExample Zach$ ./gradlew connectedCheck

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app:preDebugAndroidTestBuild'.
> Could not resolve all task dependencies for configuration ':app:debugAndroidTestRuntimeClasspath'.
   > Could not resolve androidx.arch.core:core-common:2.0.0.
     Required by:
         project :app
      > Cannot find a version of 'androidx.arch.core:core-common' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1' --> 'androidx.arch.core:core-common:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-runtime:2.1.0-alpha03' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.appcompat:appcompat:1.1.0-alpha03' --> 'androidx.fragment:fragment:1.1.0-alpha05' --> 'androidx.activity:activity:1.0.0-alpha05' --> 'androidx.savedstate:savedstate:1.0.0-alpha02' --> 'androidx.arch.core:core-common:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0

   > Could not resolve androidx.arch.core:core-runtime:2.0.0.
     Required by:
         project :app
      > Cannot find a version of 'androidx.arch.core:core-runtime' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0

   > Could not resolve androidx.arch.core:core-runtime:2.0.1.
     Required by:
         project :app > androidx.arch.core:core-testing:2.0.1
      > Cannot find a version of 'androidx.arch.core:core-runtime' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0

   > Could not resolve androidx.arch.core:core-common:2.0.0.
     Required by:
         project :app > androidx.lifecycle:lifecycle-extensions:2.0.0
         project :app > androidx.lifecycle:lifecycle-livedata:2.0.0
         project :app > androidx.lifecycle:lifecycle-runtime:2.1.0-alpha03
         project :app > androidx.lifecycle:lifecycle-livedata-core:2.0.0
         project :app > androidx.savedstate:savedstate:1.0.0-alpha02
      > Cannot find a version of 'androidx.arch.core:core-common' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1' --> 'androidx.arch.core:core-common:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-runtime:2.1.0-alpha03' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.appcompat:appcompat:1.1.0-alpha03' --> 'androidx.fragment:fragment:1.1.0-alpha05' --> 'androidx.activity:activity:1.0.0-alpha05' --> 'androidx.savedstate:savedstate:1.0.0-alpha02' --> 'androidx.arch.core:core-common:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0

   > Could not resolve androidx.arch.core:core-runtime:2.0.0.
     Required by:
         project :app > androidx.lifecycle:lifecycle-extensions:2.0.0
         project :app > androidx.lifecycle:lifecycle-livedata:2.0.0
         project :app > androidx.lifecycle:lifecycle-livedata-core:2.0.0
      > Cannot find a version of 'androidx.arch.core:core-runtime' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-runtime:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-runtime' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0

   > Could not resolve androidx.arch.core:core-common:2.0.1.
     Required by:
         project :app > androidx.arch.core:core-runtime:2.0.1
      > Cannot find a version of 'androidx.arch.core:core-common' that satisfies the version constraints: 
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-testing:2.0.1' --> 'androidx.arch.core:core-runtime:2.0.1' --> 'androidx.arch.core:core-common:2.0.1'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-runtime:2.1.0-alpha03' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.lifecycle:lifecycle-extensions:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata:2.0.0' --> 'androidx.lifecycle:lifecycle-livedata-core:2.0.0' --> 'androidx.arch.core:core-common:2.0.0'
           Dependency path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.appcompat:appcompat:1.1.0-alpha03' --> 'androidx.fragment:fragment:1.1.0-alpha05' --> 'androidx.activity:activity:1.0.0-alpha05' --> 'androidx.savedstate:savedstate:1.0.0-alpha02' --> 'androidx.arch.core:core-common:2.0.0'
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0
           Constraint path 'CoreTestingVersionExample:app:unspecified' --> 'androidx.arch.core:core-common' strictly '2.0.0' because of the following reason: debugRuntimeClasspath uses version 2.0.0


* 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

如果我使用相同的

lifecycleVersion

和

coreTestingVersion

值（例如2.0.0），则不会发生错误，但lint抱怨核心测试依赖项有一个更新版本（2.0.1）。（不过，至少它可以运行：P）我认为，

androidx

的一个优点是它可以允许更新单个片段而不会出现问题

以下是显示问题的示例应用程序：

只需通过此项目中的终端运行

connectedCheck

，即可看到构建失败

有没有办法解决这个问题

---

编辑：为此创建了google问题，请参见

要解决此问题，您必须使用依赖项解决策略。当我面临类似问题时，我就是这样解决的：

---

每个依赖项的Fyi表示为实现“组*：名称：*version”

我必须采取两种变通方法来解决此问题：

使用最新的google play服务库：

如其他答覆所述：

  configurations.all
            {
                resolutionStrategy.eachDependency { details ->
                    if (details.requested.group == 'androidx.arch.core'
                            && !details.requested.name.contains('core-runtime')) {
                        details.useVersion "2.0.1"
                    }

}

---

是否尝试使缓存无效并重新启动？是！我还完全重新启动了计算机，并在两台不同的计算机上进行了检查，但问题仍然存在。请尝试检查是否启用或禁用了脱机工作。在android studiooffline中，在我的设置中禁用了脱机工作。我为此创建了一个android问题：到目前为止，此问题似乎有效-我将进一步调查，如果我看不出这有什么问题，我也会在谷歌上发表文章。。。谢谢我还建议您在您的家属中使用Kotlin DSL。这对我的情况不起作用，您在哪里添加的？我们需要在gradle中放在哪里？您在哪里添加的？关于依赖关系？@MadonaSyombua是的。内部依赖项{}块。确保您也有最新的Google play服务库。来源问题：

  configurations.all
            {
                resolutionStrategy.eachDependency { details ->
                    if (details.requested.group == 'androidx.arch.core'
                            && !details.requested.name.contains('core-runtime')) {
                        details.useVersion "2.0.1"
                    }

}