#FRAGMENT DESIGNER ANDROID#
#FRAGMENT DESIGNER CODE#

#FRAGMENT DESIGNER ANDROID#

For now, though, they will require a device with Android 3.0, Honeycomb. Note: In a future tutorial, we'll talk about using the new compatibility layer to enable technologies like the Fragment API to work on earlier versions of Android. Now you'll have access to the new APIs, including the Fragments API. We're not using any Google APIs, so the Android Open Source Project version is sufficient. Navigate to the Android section and check the checkbox next to Android 3.0. To do this from within Eclipse, right-click on the project and choose Properties. Then we'll switch to a single screen implementation, which involves modifying the messaging between the ListView and WebView activities-turned-fragments.įirst, though, change the Project Build Target of your application to Android 3.0. One fragment will contain the current ListView and another will contain the WebView. The first step involves leaving the screens visually unchanged, but modifying each screen to use a fragment.

We'll do the conversion in several steps. Now that we know how the new screen workflow will be designed, we also know that the two current activities will need to be converted to fragments. Step 2: Converting to a Fragments-Based Design The following figure illustrates the existing workflow of our Mobiletuts+ article reader app (the ListView tutorial) before a Fragment design was considered and applied:

#FRAGMENT DESIGNER CODE#

You can download that code and build from there, though you will have some tasks you'll have to do unassisted, or you can download the code for this tutorial and follow along. This tutorial assumes you will start where our ListView tutorial left off. Also like an Activity, a Fragment need not contain any user interface. A Fragment doesn't have to be paired with the same Activity each time it's instantiated, which gives it some flexibility. However, a Fragment is different from an Activity, in that a Fragment must exist within an Activity. If that sounds a lot like an Activity, that's because it is a lot like an Activity.

A Fragment is, generally, a chunk of user interface with its own life cycle. Introducing Fragmentsīefore we get started, let's define what a Fragment is, at a high level. The final sample code that accompanies this tutorial is available for download as open-source from the Google code hosting. The pacing of this tutorial is going to be faster than some of our beginner tutorials you may have to review some of the other Android tutorials on this site or even in the Android SDK reference if you are unfamiliar with any of the basic Android concepts and classes discussed in this tutorial. We'd recommend looking at these more recent tutorials on the same topic: This might make it a little difficult to follow along. Subsequent Changes to Techniques & SoftwareĬertain aspects of applications or techniques used in this tutorial have changed since it was originally published.

Fragment designer