Titlebook: Beginning Android 2; Mark L. Murphy Book 2010 Mark Murphy 2010 Android.Apple iPhone.Internet.Java.Web Services.database.programming

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Projects and Targets,After you have downloaded and installed the latest Android Software Development Kit (SDK), and perhaps the Android Developer Tools (ADT) plugin for Eclipse (both available from the Android Developers web site), you’re ready to get started. This chapter covers what is involved in building an Android application.

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Employing Basic Widgets,Every GUI toolkit has some basic widgets: fields, labels, buttons, and so on. Android’s toolkit is no different in scope, and the basic widgets will provide a good introduction to how widgets work in Android activities.

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Using Selection Widgets,Back in Chapter 5, you saw how fields could have constraints placed on them to limit possible input, such as only digits. These sorts of constraints help users “get it right” when entering information, particularly on mobile devices with cramped keyboards.

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The Input Method Framework,Android 1.5 introduced the input method framework (IMF), which is commonly referred to as .. However, the . term is not necessarily accurate, as IMF could be used for handwriting recognition or other means of accepting text input via the screen.

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Showing Pop-Up Messages,Sometimes, your activity (or other piece of Android code) will need to speak up.

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Creating Intent Filters,Up to now, the focus of this book has been on activities opened directly by the user from the device’s launcher. This is the most obvious case for getting your activity up and visible to the user. And, in many cases, it is the primary way the user will start using your application.