由于Android Studio有的依赖包国内访问不了,设置不了代理,后来在Android Studio 3.1,一直提示“Cause: jcenter.bintray.com:443 failed to respond”,后来搜索到网上说可能是代理的原因,在“C:\Users\Administrator\.gradle\gradle.properties",把systemProp.https.proxyPort和systemProp.https.proxyHost的代理注销了,就正常了。能正常运行的gradle.properties如下:
# org.gradle.parallel=true
#Fri Jun 29 10:45:08 CST 2018
#systemProp.https.proxyPort=1080
systemProp.http.proxyHost=127.0.0.1#systemProp.https.proxyHost=127.0.0.1
systemProp.http.proxyPort=1080