我是Maven的新手，正在尝试构建开源的MoPub Android SDK。
我在尝试构建时遇到此错误：
[ERROR] Failed to execute goal on project mopub-sdk: Could not resolve dependencies for project com.mopub.mobileads:mopub-sdk:jar:1.0.0-SNAPSHOT: Failure to find com.google.android:android:jar:4.1.2 i
n http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
我跑的命令是mvn install
我做错了吗？为什么没有找到这种依赖？