Android studio更新到2.2之后出现的问题

更新完AS之后去写作业，发现怎么弄都是没法运行，提示的错误是Conflict with dependency 'com.android.support:support-annotations'. Resolved versions for app (22.2.1) and test app (23.1.1) differ. See https://g.co/androidstudio/app-test-app-conflict for details.更新完AS之后去写作业，发现怎么弄都是没法运行，提示的错误是Conflict with dep