Easily open any image in twimager right from your application by setting the data uri to the path to the image, and the mime type to "application/twimager".
Intent intent = new Intent ( );
intent.setAction ( Intent.ACTION_VIEW );
intent.setDataAndType ( Uri.parse ( "http://avatar.xboxlive.com/avatar/Darth%20Minos/avatar-body.png" ),
"application/twimager" );
MainActivity.this.startActivity ( intent );