AS报错：Could not resolve com.android.support:appcompat-v7:27.0.1.

Error:Unable to resolve dependency for ‘:[email protected]/compileClasspath’: Could not resolve com.android.support:appcompat-v7:27.0.1.

方案一：File–>Settings–>Build,Execution,Deployment–>Gradle–>取消Offine work的勾选。
AS报错：Could not resolve com.android.support:appcompat-v7:27.0.1.
方案二：换个网络。。。之前用的是校园网络，便报了标题的错，用手机打开热点连上后，Try again项目就正常了

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