title: How to check if SharedPreferences exists or not
body: <p>I'm checking in this way if the file exists, but I need to go beyond, I need to know if there is one in specific, is there any way?</p>
  
  <pre><code>File f = new File("/data/data/com.eventrid.scanner/shared_prefs/Eventrid.xml");
            if (f.exists()){
  
            }
            else{
  
            }  
  </code></pre>