Let's try using some declarations, assignments, and operators. When we bundle these elements together into some meaningful syntax, we call it an expression. Let's write a quick app to try some out. We will then use Toast
and Log
to check our results.
Create a new project called Expressing Yourself
, use a Basic Activity, and leave all the other settings at their defaults. The completed code that we will write in this project can be found in the Chapter 7/Expressing Yourself
folder of the download bundle.
Switch to the MainActivity tab in the editor and we will write some code. In the onCreate
method, just before the closing curly brace, }
, add this code:
int numMessages;
Directly below the previous line of code, we will initialize a value to numMessages
. But as you begin to type nu...
,
notice that we get a little pop up message like this:
If you look at the first choice in the pop up message, you'll notice that it is, in fact, numMessages. Android Studio...