title: requestFileSystem does not work on android phone
body: <p>I am working on a cordova based mobile application. I need to create a file on phone and save a blob into it. I tried using cordova file plugin as mentioned at <a href="http://www.html5rocks.com/en/tutorials/file/filesystem/" rel="nofollow">http://www.html5rocks.com/en/tutorials/file/filesystem/</a></p>
  
  <p>Before I could use any of the file system API, i need to requestfilesystem like below.</p>
  
  <pre><code>window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
  if (!window.requestFileSystem)
      alert("ERROR");
  window.requestFileSystem(window.TEMPORARY, 1024*1024*5, gotFS, fail);
  </code></pre>
  
  <p>I have put the alert just for debugging. On android phone I get this alert. Hence I am unable to work with file system API.</p>
  
  <p>is there any alternative way to use filesystem APIs on android phone ?
  Any suggestions please ?</p>