is there any way to identify scrollview scrolling up or down in android?

Question

Hey just wanted to identify whether a scrollview is scrolling up or down in android .Wanted to do different actions while scrolling up and scrolling down.

Any idea is appreciated, thanks

Answer 1

Try this: Extends Scrollview and override onTouchEvent method

private float mTouchPosition;
private float mReleasePosition;

@Override
public boolean onTouchEvent(MotionEvent event) {

    if (event.getAction() == MotionEvent.ACTION_DOWN) {
        mTouchPosition = event.getY();
    }
    if (event.getAction() == MotionEvent.ACTION_UP) {
        mReleasePosition = event.getY();

        if (mTouchPosition - mReleasePosition > 0) {
            // user scroll down
        } else {
            //user scroll up
        }
    }
    return super.onTouchEvent(event);
}