title: can not open files with openFileInput saved via openFileOutput
body: <p>this is the way I write my data into a file</p>
  
  <pre><code>FileOutputStream fos = openFileOutput("ThisWeekDatabase", Context.MODE_PRIVATE);
  String Line;
  while ((Line = thisWeekReader.readLine()) != null) {
          fos.write(Line.getBytes()); 
  }
  fos.close();
  </code></pre>
  
  <p>and this is the way I am trying to read that same file</p>
  
  <pre><code>FileInputStream fIn = openFileInput ("ThisWeekDatabase") ;
  InputStreamReader isr = new InputStreamReader ( fIn ) ;
  BufferedReader buffreader = new BufferedReader ( isr ) ;
  String Line;
  while ((Line = buffreader.readLine ()) != null ) {
      if (Line.contains("xyz")){
          doSomething();
      }
  }
  isr.close ( ) ;
  </code></pre>
  
  <p>but I am getting <code>java.io.FileNotFoundException</code></p>