Developing Android Applications with Adobe AIR

Flash Builder ViewNavigator

Flash Builder and its Hero APIs provide functionality to handle view management.

Create a new project under File→New→Flex Mobile project. On the Mobile Settings panel, choose Application template→Mobile Application, then select Finish. Look at the main default application file. A firstView tag was added to the MobileApplication tag. It points to an MXML file inside a views directory:

<s:MobileApplication
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adboec.com/flex/spark"
    firstView="views.OpeningView"
    }
}

Notice a new directory called views inside your default application file. It contains the MXML file which was named after your project, as well as HomeView.mxml, and was given a title of HomeView. This is the default first view which appears when the application starts:

<s:View
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adboec.com/flex/spark"
    title="HomeView">
    <fx:Declarations> </fx:Declarations>
</s:View>

Note

The concept of a splash screen, or a default.png file, does not exist in Android as it does in iOS. The user sees a black screen until the application is loaded. Flex provides an option to display an image first while it initializes the application to reduce the sense of delay. The image is automatically replaced by the default view when ready.

A few new components were created especially for mobile development. The spark.components.ViewNavigatorApplication container automatically creates a ViewNavigator object. It ...