如果添加以下行，则创建新的Android Studio项目（“空活动”类型）：
// 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"
对于应用程序的build.gradle文件，当您尝试为项目运行connectedCheck任务时，会看到错误。查看输出：
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，但是lint抱怨核心测试依赖项具有更新的版本（2.0.1） 。 （尽管它至少运行了，但：P）我认为androidx的优点之一是它可以无问题地更新单个片段？
以下是显示问题的示例应用：https://github.com/ZOlbrys/CoreTestingVersionExample
在此项目中仅通过终端运行connectedCheck即可查看构建失败。
关于如何解决此问题的任何想法？
编辑：为此创建了google问题，请参见https://issuetracker.google.com/issues/129316035
答案 0 :(得分：0)
要解决此问题，您将必须使用依赖项解决策略。这是我遇到类似问题时的解决方法：Cannot find version of 'androidx.arch', 'androidx.room', etc
configurations.all
{
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'androidx.arch.core'
&& !details.requested.name.contains('core-runtime')) {
details.useVersion "2.0.1"
}
}
Fyi表示为实现“ group ： name ： version ”
答案 1 :(得分：0)
我必须采取两种解决方法来解决此问题：
使用最新的Google Play服务库：https://developers.google.com/android/guides/google-services-plugin
如其他答案中所述：
configurations.all
{
resolutionStrategy.eachDependency { details ->
if (details.requested.group == 'androidx.arch.core'
&& !details.requested.name.contains('core-runtime')) {
details.useVersion "2.0.1"
}
}