I have tried all day to capture a trackball event in a View. Basically
I want to use the trackball to move a Sprite in a 2D game left and
right. The onTouchEvent works perfectly well in the View to move the
Sprite with my finger but it would be nicer and cleaner to use the
trackball.
The onTouchEvent looks like:
@Override
public boolean onTouchEvent (MotionEvent motionEvent)
{
int action = motionEvent.getAction ();
int currentX = (int) motionEvent.getX ();
int currentY = (int) motionEvent.getY ();
if (action == MotionEvent.ACTION_MOVE)
{
do stuff here and it works great
}
return true;
}
The onTrackballEvent looks like:
@Override
public boolean onTrackballEvent (MotionEvent motionEvent)
{
int action = motionEvent.getAction ();
int currentX = (int) motionEvent.getX ();
int currentY = (int) motionEvent.getY ();
if (action == MotionEvent.ACTION_MOVE)
{
do stuff here and it never gets here
}
return true;
}
In the debugger I can never get a trackball event to enter the above
code. I also tried setting up an onKey listener in the View that looks
like:
this.setOnKeyListener (
new OnKeyListener ()
{
public boolean onKey (View view, int keyCode, KeyEvent
keyEvent)
{
//int currentX = (int) motionEvent.getX ();
//int currentY = (int) motionEvent.getY ();
if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT)
{
do stuff
}
else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT)
{
do stuff
}
return true;
}
});
Can anyone provide me with a simple example that uses the trackball to
move something in a View in a 2D type game world (not a menu or UI
type of example)? Or can someone explain what I'm not doing. Thanks so
much for any help you can give me.
PS - I did try and study the LunarLander code and I don't see what I'm
doing differently.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers-unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
-~----------~----~----~----~------~----~------~--~---
