SimpleOnGestureListener not working for ScrollView

I have a screen where I have a header, a TextView inside a ScrollView and footer. I have to use ScrollView as the Text in the TextView can be long also.

Now when I am using SimpleOnGestureListener for this screen. It is not working for the ScrollView section. Removing the ScrollView everything work开发者_JS百科ing fine. But for the case of long text, some text are getting missed.

I want to use onFling and onDoubleTap in SimpleOnGestureListener.

Please advise.

Regards, Shankar

I got the solution for this issu

Add following method in the your Activity class

@Override
public boolean dispatchTouchEvent(MotionEvent ev){
    super.dispatchTouchEvent(ev);
    return gestureScanner.onTouchEvent(ev);
} 

As suggested in the below link:

http://groups.google.com/group/android-developers/browse_thread/thread/9fdfb03d0959e299

You have to create a custom ScrollView object and override it's onTouchEvents to also check for your gestures. It's demonstrated in the following code.

public class GestureScrollView extends ScrollView {
    GestureDetector myGesture;

    public GestureScrollView(Context context, GestureDetector gest) {
        super(context);
        myGesture = gest;
    }

    public GestureScrollView(Context context) {
        super(context);
    }

    public GestureScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (myGesture.onTouchEvent(ev))
            return true;
        else
            return super.onTouchEvent(ev);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if (myGesture.onTouchEvent(ev))
            return true;
        else
            return super.onInterceptTouchEvent(ev);
        }
    }

Let me know if you run into any issues. :)

-Zaid