2 Answers

• Add the toolbar also to the keyboard, not only to the bottom of the window or view

  var send = Titanium.UI.createButton({
      title: 'Send',
      style: Titanium.UI.iPhone.SystemButtonStyle.DONE,
  });
  var camera = Titanium.UI.createButton({
      systemButton: Titanium.UI.iPhone.SystemButton.CAMERA,
  });
  var cancel = Titanium.UI.createButton({
      systemButton: Titanium.UI.iPhone.SystemButton.CANCEL
  });
  flexSpace = Titanium.UI.createButton({
      systemButton:Titanium.UI.iPhone.SystemButton.FLEXIBLE_SPACE
  });
  var toolbar = Titanium.UI.createToolbar({
      items:[send, flexSpace, camera, flexSpace, cancel],
      bottom:0,
      borderTop:true,
      borderBottom:false
  });
  var txtf_1 = Ti.UI.createTextField({
      width:200,
      height: 30,
      top:100,
      left:100,
      borderStyle: Ti.UI.INPUT_BORDERSTYLE_ROUNDED,
      keyboardToolbar: toolbar //Here the toolbar will appear over the keyboard
  });
  

• try this example from kitchensink