O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers. Get Head First Android Development, 2nd Edition now with the O’Reilly learning platform. You’re going to build an app containing two activities.

The best way of understanding how this works is to see it in action. If you chain multiple activities together to do something more complex, it’s called a task.

If this is the case, you’ll need to use multiple activities: one for displaying the list of recipes and another for adding a single recipe.Īn activity is a single focused thing your user can do. If your app is simple, this may be all that’s needed.īut a lot of the time, you’ll want users to do more than just one thing-for example, adding recipes as well as displaying a list of them. Earlier in the book, we said that an activity is a single, defined thing that your user can do, such as displaying a list of recipes. You can also register the broadcast receiver from in your Activity or Fragment (for more information about this, see the official Android documentation for.

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