今天使用android studio 碰到一个错误
1、No cached version of org.aspectj:aspectjtools:1.8.1 available for offline mode.
Disable Gradle 'offline mode' and sync project
2、Could not HEAD 'https://jcenter.bintray.com/org/aspectj/aspectjtools/1.8.1/aspectjtools-1.8.1.pom'. Received status code 400 from server: Bad Request
2018-07-11 16:09:04,764 [d thread 8] INFO - e.project.sync.GradleSyncState - Gradle sync failed: Could not HEAD 'https://jcenter.bintray.com/org/aspectj/aspectjtools/1.8.1/aspectjtools-1.8.1.pom'. Received status code 400 from server: Bad Request
网上找到大部分都不能解决这个问题。怀疑是代理问题，之前设置过代理，到
这里也没有设置http proxy，后来以为是jar包gradle引用的问题，偶然看了gradle.properties里面还有如下信息
systemProp.https.proxyPort=80 systemProp.http.proxyHost=mirrors.neusoft.edu.cn systemProp.https.proxyHost=mirrors.neusoft.edu.cn systemProp.http.proxyPort=80后来尝试注释掉这些信息，重新点击try again就可以了。坑！