Conflict with dependency support-annotations

Conflict with dependency 'com.android.support:support-annotations' in project ':app'. Resolved versions for app (26.1.0) and test app (27.1.1) differ.

支持包与测试包的冲突，

解决方法

    androidTestImplementation ('com.android.support.test:runner:1.0.2',{
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    androidTestImplementation ('com.android.support.test.espresso:espresso-core:3.0.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })

添加 exclude group: 'com.android.support', module: 'support-annotations'

来源：oschina

链接：https://my.oschina.net/u/3136970/blog/1839123