title: can not create new Android project using Android Studio
body: <p>I am trying to create Android project using Android studio.</p>
  
  <p>I have installed the latest Android studio and update it using the <code>help-check for updates</code>.</p>
  
  <p>Then I tried to create my first Android project, however after the studio download the <code>gradle</code>, it throw a error:</p>
  
  <pre><code>Gradle: A problem occurred configuring project ':FirstAndroid'.
  &gt; Failed to notify project evaluation listener.
     &gt; Could not resolve all dependencies for configuration ':FirstAndroid:_DebugCompile'.
        &gt; Could not find any version that matches com.android.support:appcompat-v7:+.
          Required by:
              FirstAndroidProject:FirstAndroid:unspecified
  </code></pre>
  
  <p>I am not sure what's the problem. </p>
  
  <p>Anyone can do me a favor?</p>