Android studio 报错: Could not resolve com.android.support:support-annotations:25.4.0.

一个AS项目一段时间没有打开,今天运行突然报错: Could not resolve com.android.support:support-annotations:25.4.0.

根据 https://developer.android.com/studio/write/annotations.html 进行配置后,可以正常运行了.

 

解决办法:

在项目的 root gradle 的 repositories中添加 

maven { url '/extras/android/m2repository' }

比如我的:

maven { url 'E/:/Wendy/android-sdk-windows/extras/android/m2repository' }

然后在 app gradle 中添加:

implementation 'com.android.support:support-annotations:25.4.0'

async后,运行正常.