January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Details of Class TextFieldHandler’s actionPerformed Method
In this example, we’re using one event-handling object’s actionPerformed method (lines 53–79) to handle the events generated by four text fields. Since we’d like to output the name of each text field’s instance variable for demonstration purposes, we must determine which text field generated the event each time actionPerformed is called. The event source is the GUI component with which the user interacted. When the user presses Enter while one of the text fields or the password field has the focus, the system creates a unique ActionEvent object that contains information about the event that just occurred, such as the event source and the text in the text field. The system passes this ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.