刚学习Android studio，被这个搞得头晕死了。
offline模式下，
Could not download compiler.jar (com.github.bumptech.glide:compiler:4.11.0): No cached version available for offline mode
关掉offline，又变成这样，要我offline
Could not HEAD 'https://dl.bintray.com/getactivity/maven/com/github/chrisbanes/PhotoView/2.3.0/PhotoView-2.3.0.pom'. Received status code 502 from server: Bad Gateway
Enable Gradle 'offline mode' and sync project
就很矛盾，我不开网，下不了compiler.jar；但是我开了网又下不了PhotoView-2.3.0；可是明明我本地这两个包都有的啊，都放在
C:\Users\Administrator.gradle\caches\modules-2\files-2.1
这里面，都是项目下的包。
