我将此添加到我的应用中
编译'com.android.support:cardview-v7:21.0.0-rc1'
错误：（31,13）无法解决： com.android.support:cardview-v7:21.0.0-rc1
<a href="install.m2.repo">Install Repository and sync project</a><br>
<a href="openFile:G:/android projects/TechnFun/app/build.gradle">Show in File</a><br>
<a href="open.dependency.in.project.structure">Show in Project Structure dialog</a>
无法解决问题