June 2013
Intermediate to advanced
346 pages
8h 42m
English
Content preview from OpenGL ES 2 for Android
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Adding Touch Support to Our Activity
We’ll begin by hooking into Android’s touch event system. The first thing we’ll need to do is hold onto a reference to our renderer, so let’s open up AirHockeyActivity and modify the call to setRenderer as follows:
| AirHockeyTouch/src/com/airhockey/android/AirHockeyActivity.java | |
| | final AirHockeyRenderer airHockeyRenderer = new AirHockeyRenderer(this); |
| | |
| | if (supportsEs2) { |
| | // ... |
| | glSurfaceView.setRenderer(airHockeyRenderer); |
We’ll refer to this reference in our touch handler to inform the renderer of new touch events.
Listening to Touch Events
Let’s start writing our touch handler by adding the following code just before the call to setContentView:
| AirHockeyTouch/src/com/airhockey/android/AirHockeyActivity.java ... |
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