why I edit the app , can't easy to view the change? It need to publish the andriod apps is so troublesome.

Why I edit the app , can't easy to view the change? It need to publish the andriod apps is so troublesome.

Then when I edit the templete, the whole structure can't view, I think the edit scale app is not good, because it's hard to view whole information. then it can't insert the URL link.