详细的错误信息
Error:A problem occurred configuring project ':app'.
Could not resolve all dependencies for configuration ':app:classpath'.
Could not resolve io.fabric.tools:gradle:1.+.
Required by:
project :app
Could not resolve io.fabric.tools:gradle:1.+.
Failed to list versions for io.fabric.tools:gradle.
Unable to load Maven meta-data from https://maven.fabric.io/public/io/fabric/tools/gradle/maven-metadata.xml.
Could not GET 'https://maven.fabric.io/public/io/fabric/tools/gradle/maven-metadata.xml'.
Connect to 127.0.0.1:51566 [/127.0.0.1] failed: Connection refused
这个错误信息好像是连接到了本地，连接还被拒绝了，厉害了。。。。
经过一番谷歌，终于找到一个解决的办法，在此记录一下
解决
For me it worked just File->Invalidate Cache/Restart, so do Invalidate and Restart.
此文只是记录一下遇到的问题，不喜勿喷，蟹蟹！！！！
