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Android displays bitmap in HTML

Source: Internet
Author: User
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Logic: Convert bitmap to Base64 by invoking JS in HTML and displaying it in HTML

(1) Android code

  2. Public String bitmaptostring (Bitmap Bitmap) {
  4. //Convert bitmap to Base64 string   
  6. StringBuffer string = new stringbuffer ();
  8. Bytearrayoutputstream Bstream = new bytearrayoutputstream ();
  12. Try  {  
  14. Bitmap.compress (compressformat.png, bstream);
  16. Bstream.flush ();
  18. Bstream.close ();
  20. byte  [] bytes = Bstream.tobytearray ();
  22. String.append (base64.encodetostring (bytes, base64.no_wrap));
  24. } catch (IOException e) {
  26. E.printstacktrace ();
  28. }
  30. System.out.println ("string.."  +string.length ());
  32. return  string.tostring ();
  34. }

Bitmap Bitmap = ....; Get Bitmap Object

Webview.loadurl ("Javascript:onsavecallback (' data:image/png;base64," + bitmaptostring (bitmap) + "')"); Invoke JS Display

(2) HTML code

<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">

<script type= "Text/javascript" >

function Onsavecallback (SRC) {
Window.hui.showMessage (SRC);
document.getElementById ("test"). src = src;
}

</script>

<body>

</body>

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