[팁]HorizontalScrollView랑 scrollview 같이 사용하기

출처 : http://stackoverflow.com/questions/2646028/android-horizontalscrollview-within-scrollview-touch-handling


public class CustomScrollView extends ScrollView {

private GestureDetector gestureDetector;

View.OnTouchListener gestureListener;


public CustomScrollView(Context context, AttributeSet attrs) {

    super(context, attrs);

    gestureDetector = new GestureDetector(new YScrollDetector());

    setFadingEdgeLength(0);

}


@Override

public boolean onTouchEvent(MotionEvent ev) {

    return super.onTouchEvent(ev);

}


@Override

public boolean onInterceptTouchEvent(MotionEvent ev) {

    //Call super first because it does some hidden motion event handling

    boolean result = super.onInterceptTouchEvent(ev);

    //Now see if we are scrolling vertically with the custom gesture detector

    if (gestureDetector.onTouchEvent(ev)) {

        return result;

    } 

    //If not scrolling vertically (more y than x), don't hijack the event.

    else {

        return false;

    }

}


// Return false if we're scrolling in the x direction  

class YScrollDetector extends SimpleOnGestureListener {

    @Override

    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {

        try {

            if (Math.abs(distanceY) > Math.abs(distanceX)) {

                return true;

            } else {

                return false;

            }

        } catch (Exception e) {

            // nothing

        }

        return false;

    }

}