In the body of our app we had created an elevated button. The elevated button is inside the container and we have given padding, width and height to our elevated button. We had also given color property to our button as well. Now as we click on this button we will see that the value of isLoading becomes true. In the button text “Loading…”appear with circularprogressindicator and with the help of future.delayed that loading will get stopped after 3 seconds