Android Studio 下载约束布局失败

Android Studio Download constraint-layout fails

我已将 Android Studio 更新到 2.1.2,我想下载 constraint-layout 工具,但它会抛出此消息

To install: - com.android.support.constraint:constraint-layout-solver:1.0.0-alpha3 (extras;m2repository;com;android;support;constraint;constraint-layout-solver;1.0.0-alpha3) - com.android.support.constraint:constraint-layout:1.0.0-alpha3 (extras;m2repository;com;android;support;constraint;constraint-layout;1.0.0-alpha3)

Installing com.android.support.constraint:constraint-layout-solver:1.0.0-alpha3 Maven package paths must start with m2repository Failed to install com.android.support.constraint:constraint-layout-solver:1.0.0-alpha3!

Installing com.android.support.constraint:constraint-layout:1.0.0-alpha3 Maven package paths must start with m2repository Failed to install com.android.support.constraint:constraint-layout:1.0.0-alpha3!

Failed packages: - com.android.support.constraint:constraint-layout-solver:1.0.0-alpha3 (extras;m2repository;com;android;support;constraint;constraint-layout-solver;1.0.0-alpha3) - com.android.support.constraint:constraint-layout:1.0.0-alpha3 (extras;m2repository;com;android;support;constraint;constraint-layout;1.0.0-alpha3)

有没有人和我有同样的问题?如果是,您是如何解决的?

编辑

我的 OS 是 Ubuntu 16.04

亲爱的约束布局是 2.2 的一部分,你可以安装 2.2 预览版,它在 site.you 上可用,也可以等待 2.2 和