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Android NDK Beginner`s Guide - Second Edition
book

Android NDK Beginner`s Guide - Second Edition

by Sylvain Ratabouil
April 2015
Beginner to intermediate content levelBeginner to intermediate
494 pages
10h 26m
English
Packt Publishing
Content preview from Android NDK Beginner`s Guide - Second Edition

Time for action – handling keyboard, D-Pad, and trackball events natively

Let's extend our new Input system with more event types:

  1. Open jni/InputHandler.hpp and add the keyboard and trackball event handlers:
    #ifndef _PACKT_INPUTHANDLER_HPP_
    #define _PACKT_INPUTHANDLER_HPP_
    
    #include <android/input.h>
    
    class InputHandler {
    public:
        virtual ~InputHandler() {};
    
        virtual bool onTouchEvent(AInputEvent* pEvent) = 0;
        virtual bool onKeyboardEvent(AInputEvent* pEvent) = 0;
        virtual bool onTrackballEvent(AInputEvent* pEvent) = 0;
    };
    #endif
  2. Update the method processInputEvent() inside the existing file jni/EventLoop.cpp to redirect the keyboard and trackball events to InputHandler.

    Trackballs and touch events are assimilated to motion events and can be discriminated ...

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Publisher Resources

ISBN: 9781783989645Supplemental Content