title: Problem Android Studio - failed to resolve com.android.support appcompat-v7 29
body: <p>I'm trying to start a course with Android Studio 2.2.1, but when I create a new project I come upon the error message:</p>
  
  <blockquote>
    <p>failed to resolve com.android.support appcompat-v7 29</p>
  </blockquote>
  
  <p>Also my Mainactivity.java gives me the error:</p>
  
  <blockquote>
    <p>Method does not override method from superclass.</p>
  </blockquote>
  
  <p>I've tried to add the Maven URL, but with no luck.</p>
  
  <p>When I try to rebuild the project I get:</p>
  
  <blockquote>
    <p>Error:A problem occurred configuring project ':app'. Could not resolve
    all dependencies for configuration ':app:_debugApkCopy'. Could not
    find any version that matches com.android.support:appcompat-v7:29.+.
    Versions that do not match:
    26.0.0-alpha1
    25.3.1
    25.3.0
    25.2.0
    25.1.1
    + 31 more Required by: DemoAppTwo:app:unspecified</p>
  </blockquote>
  
  <p>Does anybody know a solution for this, so that I can start learning to code in android please?
  Thanks in advance!</p>
  
  <p>Kind regards,
  KevinDP</p>