title: Android appCompat dependency is throwing error
body: <p>I m new to Android. Every time I include a dependency, I get the below error. I have tried a few possible solutions but nothing seems to work.</p>
  
  <blockquote>
    <p>All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 28.0.0, 27.0.2. Examples include com.android.support:animated-vector-drawable:28.0.0 and com.android.support:customtabs:27.0.2 less... (Ctrl+F1) 
    Inspection info:There are some combinations of libraries, or tools and libraries, that are incompatible, or can lead to bugs. One such incompatibility is compiling with a version of the Android support libraries that is not the latest version (or in particular, a version lower than your targetSdkVersion).  Issue id: GradleCompatible`</p>
  </blockquote>