Error:Could not find common.jar (android.arch.core:common:1.0.0).
Searched in the following locations:
https://jcenter.bintray.com/android/arch/core/common/1.0.0/common-1.0.0.jar
据说这个是Google最近的一个bug，解决方案是：
将 依赖包中的“+”改成响应的版本号。问题就可以解决。具体版本号如下。
API 24:
implementation 'com.android.support:appcompat-v7:24.2.1'
implementation 'com.android.support:recyclerview-v7:24.2.1'
API 25:
implementation 'com.android.support:appcompat-v7:25.4.0'
implementation 'com.android.support:recyclerview-v7:25.4.0'
API 26:
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:recyclerview-v7:26.1.0'
API 27:
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:recyclerview-v7:27.1.1'
