Improving our app and deploying again

We will take a more thorough and structured look at Android Studio, in particular the visual designer in the next chapter. For now, I thought it would be good to make a small addition to our UI, as well as write our first few lines of Java code.

Tip

You can get the completed code files for this project in the Chapter 2 folder of the download bundle.

In Android, there are often multiple ways to get the same thing done. Here, we will see how we can refer to a method in our Java code directly from the UI designer or XML code. Then, once we have done this, we will jump to the Java code and write our very own methods that our new UI refers to. Not only that, but we will write code within our methods that both gives an output on the logcat/console and uses a really cool Android feature that pops up a message to the user.

Modifying the UI

Here, we will add a couple of buttons to the screen and we will then see a really fast way to make them actually do something...