Android: can't seem to use MotionEvent.ACTION_MOVE correctly

Question

I am quite new to Android programming and Java (though I have some experience with C#, so that helps).

At this moment I'm goofing around with a couple of things to get to know how everything works. I've made an activity which implements onTouchListener. I've overridden onTouch and have a switch on event.getAction():

public boolean onTouch(View v, MotionEvent event) 
{
    float x; 
    float y;    

    switch (event.getAction())
    {
        case MotionEvent.ACTION_DOWN: // gets called
        {
            x = event.getX();
            y = event.getY();   
            circle c = new circle(this, x, y, 10, 0xFFFFFF);
            _main.addView(c, tapCount++);
            break;
        }
        case MotionEvent.ACTION_MOVE: // doesnt seem to do anything
        {
            x = event.getX();
            y = event.getY();
            circle c = new circle(this, x, y, 10, 0xFFFFFF);
            _main.addView(c, tapCount++);
            break;
        }
    }
    return false;
}

Where "circle" is a class which draws a circle.

What I expected to see was a trail of circles as I dragged my finger over the screen. In stead, the circle is only being drawn when I start touching.

I have compared my code to examples (for example: this blogpost by Google: http://android-developers.blogspot.com/2010/06/making-sense-of-multitouch.html ) and I can't find my mistake.

EDIT: Link to the full class: http://pastebin.com/tVDQjQhu

EDIT: Fixed. One has to return true in the onTouch() function. d'oh!

Answer 1

I was having the same problem while using MotionEvent.ACTION_MOVE. For MotionEvent.ACTION_MOVE to work, return true instead of false.