升级到 Espresso 2.1，现在出现依赖冲突

Question

在设置 Espresso 2.1 和最新版本的 Android 测试支持库时，我在构建时遇到了下一个警告：

Confilct with dependency 'com.android.support:support-annotations'. Resolved versions for app and test app differ

我的build.gradle文件是：

apply plugin: 'com.android.application'

android {
...
    defaultConfig {
        testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
    }
...
}

dependencies {
    androidTestCompile 'com.android.support.test:runner:0.2'
    androidTestCompile 'com.android.support.test:rules:0.2'
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.1'

    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.1.0'
}

Answer 1

实际上我找到了一个 existing issue:

we built against the old 22.0.0 and didn't upgrade to 22.1.0. The runner depends on com.android.support:support-annotations:22.0.0 which conflicts with the latest support library release (22.1.0)

我通过将以下行添加到我的依赖项列表来告诉 gradle 它需要解析哪个版本的支持注释：

androidTestCompile 'com.android.support:support-annotations:22.1.0'

警告消失了。

Answer 2

@appoll Here Stephan Linzner 为此添加了解决方法。

上面我已经添加了他对这个问题的评论，解释了解决方案：

we are aware of the issue. The gist is that the runner depends on com.android.support:support-annotations:22.0.0 which conflicts with the latest support library release (22.1.0). The correct way to solve this right now, is to tell Gradle which version of support-annotations it needs to resolve to.

升级到 Espresso 2.1，现在出现依赖冲突

Upgraded to Espresso 2.1 and now getting dependency conflict

android

android-espresso