title: execute .bat file from android
body: <p>i am trying to execute the xxx.bat file for rename the file from my Android app
  and hear is my code </p>
  
  <pre><code>  Runtime.getRuntime().exec(Environment.getExternalStorageDirectory()+File.separator+"eduapp"+File.separator+"lock1.bat");
  </code></pre>
  
  <p>eduapp is Directory and lock1.bat is my bat file and content of it </p>
  
  <pre><code>ren /sdcard/eduapp .{ED7BA470-8E54-465E-825C-99712043E01C}
  </code></pre>
  
  <p>but when i run app it throes error like..</p>
  
  <pre><code>java.io.IOException: Error running exec(). Command: [/mnt/sdcard/eduapp/lock1.bat] Working Directory: null Environment: null
  </code></pre>
  
  <p>basically <strong>i want to hide some folder from sdcard .</strong>
  is their any anther way to run .bat or hide folder from sdcard . </p>