In the last chapter, we covered all of the basic user interface elements of the SDK. Each of these fields have a specific purpose and implement a little more functionality. We covered them in detail so that you can choose the right field for the right job when building an application. But that's not all of them! This chapter will continue where the other left off and cover the remaining advanced
Field
classes. I call these advanced classes because they will require more programming in order to make them work than just to create an instance and add it to theScreen
.
This chapter picks up where the previous one left off. In this chapter, you will:
Learn to use the advanced fields such as
TreeField
andListField
Study what a layout manager is and how is it used
Manage more than one screen in an application
Create and use dialogs to notify the user of a choice or collect information
Learn the changes that are needed to interface with touchscreens such as the BlackBerry...