January 2017
Beginner to intermediate
624 pages
22h 42m
English
book
Android Programming: The Big Nerd Ranch Guide, Third Edition
by Bill Phillips, Chris Stewart, Kristin Marsicano
Content preview from Android Programming: The Big Nerd Ranch Guide, Third Edition
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Delayed Execution with AlarmManager
To actually use your service in the background, you will need some way to make things happen when none of your activities are running. Say, by making a timer that goes off every five minutes or so.
You could do this with a Handler by calling Handler.sendMessageDelayed(…) or Handler.postDelayed(…). But this solution will probably fail if the user navigates away from all your activities. The process will shut down, and your Handler messages will go kaput with it.
So instead of Handler, you will use AlarmManager, a system service that can send Intents for you.
How do you tell AlarmManager what intents to send? You use a PendingIntent. You can use PendingIntent to package up a wish: “I want to ...
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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.