2 Answers

• var win = Titanium.UI.createWindow({
  backgroundColor:'white',
  });

  var imgv=Titanium.UI.createImageView({
  image:"mysic_player_defaultartwork.png",

  height:100,
  width:100,
  top:10,
  });

  win.add(imgv);

  var imgview=Titanium.UI.createImageView({
  image:'KS_nav_ui.png',
  height:100,
  width:100,
  top:150,
  });

  win.add(imgview);

  var btn=Titanium.UI.createButton({
  bottom:100,
  width:100,
  height:50,
  title:'click'
  });
  win.add(btn);
  win.open();

  btn.addEventListener('click',function(e){
  var str= Titanium.Utils.base64encode(imgv.toBlob());
  try{
  var blob = Titanium.Utils.base64decode(str);
  imgview.image = blob;
  }
  catch(e){
  alert("exception : " + e);
  }

  });

• Are you talking about a database on a server or a local database on the app?
  If you are talking about the local SQLite database have a look at page 19 of the Database Reference Guide with explains all about Blob data. http://assets.appcelerator.com.s3.amazonaws.com/docs/API_DatabaseClass.pdf