Jcenter编译失败

今天jcenter挂掉了，导致腾讯等一些库编译失败，解决办法：用阿里镜像代替jcenter()

maven { url 'http://maven.aliyun.com/nexus/content/repositories/google' }
maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
maven { url 'http://maven.aliyun.com/nexus/content/repositories/jcenter'}