title: WebView - Load and Save File
body: <p>I have a page html, now i want bring it to android into webview. 
  Page can save and load file to computer.</p>
  
  <p>Now, when bring it to android. I want using function. </p>
  
  <ol>
  <li><p>Load File : </p>
  
  <pre><code>&lt;input id="loader" type="file" accept=".bin" onchange="run(this.files[0]);"&gt;
  </code></pre></li>
  </ol>
  
  <p>In android, how to send a file from storage to function <code>run();</code>?</p>
  
  <ol start="2">
  <li><p>Save File : </p>
  
  <pre><code>window.open('data:application/octet-stream;base64,' + data, 'save.bin');
  </code></pre></li>
  </ol>
  
  <p>In Android, how to save save.bin to storage? </p>
  
  <p>Someone help me. Thanks.</p>