Intent is an abstract description of an operation to be performed. To be more specific, it is an asynchronous call which allows the application to request functionality from other Android components, for example, services/activities. It can be used with the
startActivity() command to launch an activity. The previous code in
SimpleNumb3r5.java is the main activity (or class) for this application. We've just created the second activity (class) in the file
Info.java. In order for the second activity to appear, it has to be started using an intent.
We have decided to use the button
btninfo as the trigger to invoke the second activity. Again, open the file
SimpleNumb3r5.java and add the following lines to invoke another activity. ...