build. gradle(project)中
allprojects { repositories { jcenter() maven { url 'https://jitpack.io' } maven { url "https://maven.google.com" } } }
改为
repositories { maven { url "https://maven.google.com" } jcenter() maven { url 'https://jitpack.io' } }
jcenter已经删掉了android.arch.core库,所以需要从 maven { url “https://maven.google.com” }中获取android.arch.core:common-1.1.0.jar