Android Studio：Gradle无法解决依赖关系

Question

Getting error:

Gradleconnectioncheck:app:unspecified Could not resolve com.github.pstovk:MaterialDesignLibrary:1.3.

Could not GET ' https://jcenter.bintray.com/com/github/pstovk/MaterialDesignLibrary/1.3/MaterialDesignLibrary-1.3.pom '. jcenter.bintray.com

1. I've used proxy setting in Android Studio. And also tried this solution ( Link ) which sets proxy in gradle, but It didn't work.

settings:

systemProp.https.proxyHost=http-proxy.nwie.net
systemProp.https.proxyPort=8080
systemProp.https.proxyUser=http-proxy.nwie.net/%USERNAME%
systemProp.https.proxyPassword=%PASSWORD%`

2. There is already jcenter() in build.gradle, which was suggested in Link

code:

repositories {
    jcenter()
}

Answer 1

I fixed this issue by adding code :

allprojects {
    repositories {
        jcenter()
    }
}

Answer 2

Make sure to include both http and https settings for proxyHost, proxyUser, and proxyPassword.

If that doesn't work, see this similar issue: https://github.com/navasmdc/MaterialDesignLibrary/issues/288

Try gradle sync and/or clean and build again like so:

Tools -> Android -> Sync Project with Gradle Files

If that fails, try running 'Rebuild project':

Build -> Rebuild Project

Also try switching over to navasmdc's repo of Material Design: https://github.com/navasmdc/MaterialDesignLibrary

Answer 3

I tried using systemProp.proxySet=true and http & https both and It's working!

systemProp.proxySet=true
systemProp.http.proxyHost=http-proxy.nwie.net
systemProp.http.proxyPort=8080
systemProp.http.proxyUser=http-proxy.nwie.net/%USERNAME%
systemProp.http.proxyPassword=%PASSWORD%`

systemProp.https.proxyHost=http-proxy.nwie.net
systemProp.https.proxyPort=8080
systemProp.https.proxyUser=http-proxy.nwie.net/%USERNAME%
systemProp.https.proxyPassword=%PASSWORD%`