Tutorial Sencha Touch Display Image

gistfile1.js

// get the format of the image and base64 data from the returned picdata
var resultHtml = "<img src='data:image/" + picdata.format + ";base64," + picdata.b64 + "' width='300px' height='300px' ></img>";
// get the last item below the buttons, which should be a container,
// and update it with the image
var items = inst.v.mainPanel.getActiveItem().items;
items.get(items.length - 1).update({
    html: resultHtml
});