title: package does not exist error in Android Studio
body: <p>In gradle file i have included 'com.android.support:support-v4:19.0.0 but still error shows up</p>
  
  <p>Execution failed for task ':app:compileDebugJava'.</p>
  
  <blockquote>
    <p>Compilation failed; see the compiler error output for details.</p>
  </blockquote>
  
  <p>error: package android.support.v7.app does not exist</p>