报错 Could not resolve androidx.constraintlayout:constraintlayout:1.1.2
搞死我了…查了很多 又是更新sdk又是改dependency 还有off-line mode
全都没用,发现居然是代理的问题,Google的源开了代理反而会炸,惊了…
解决方案如下:
step1.关闭代理:
settings -> HTTP Proxy -> No proxy
step2.手动更新配置:
gradle.properties:
...
# org.gradle.parallel=true
#Tue Jul 02 10:35:29 CST 2019
# 如果出现以下几行,务必注释
#systemProp.https.proxyPort=1080
#systemProp.http.proxyHost=127.0.0.1
#systemProp.https.proxyHost=127.0.0.1
#systemProp.http.proxyPort=1080
step3.build
终于搞定了: