title: Why selectionArgs must be an String array?
body: <p>I answered a question in stack overflow and the user that asked the question ask me:<br>
  <a href="https://stackoverflow.com/questions/28957644/sqlite-query-in-android-using-cursor/28957867#28957867">SQlite Query in android using cursor</a></p>
  
  <blockquote>
    <p>why i must give my selectionArgs an Array instead its a single value ?</p>
  </blockquote>
  
  <p>I didn't think about this before and its my question too now.
  We must use an array when we have only one value for <code>selectionArgs</code> in DB query?<br>
  (I hope i right my question in right place)</p>