March 2002
Intermediate to advanced
400 pages
8h 44m
English
Content preview from Wireless J2ME™ Platform ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. The MIDP High-Level API
Command Processing
Command-Processing Scenario
Screen Navigation
Command Organization
At this point, you know how to organize the UI of a basic MIDP application. In any MIDlet more complicated than the first contrived example you saw, you have to define multiple screens. The application moves from screen to screen in response to user input from the keypad, soft keys, or function buttons of a typical mobile device.
To build more complex applications, you need to learn how the MIDP accommodates user input and does event processing. This chapter covers the MIDP's high-level API, which defines the abstractions that accommodate handling high-level application events.
The high-level API is the first of two APIs for MIDP ...
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