Scroll

gistfile1.java

package com.example.wwwithscrolltest;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.EditText;
import android.widget.ScrollView;

public final class CustomScrollView extends ScrollView {
	public EditText title;

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

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

	public CustomScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onScrollChanged(int l, int t, int oldl, int oldt) {
		Log.d("SCROLL", "t = " + t + " oldT = " + oldt);
		super.onScrollChanged(l, t, oldl, oldt);
		if (t < 0)
			return;
		if (t > oldt) {
			if (title.getY() - (t - oldt) / 2 > -title.getHeight())
				title.setY(title.getY() - (t - oldt) / 2);
			else
				title.setY(-title.getHeight());
		} else if (t < oldt) {
			if (title.getY() + (oldt - t) / 2 < 0)
				title.setY(title.getY() + (oldt - t) / 2);
			else
				title.setY(0);
		}
		if (t == 0 && oldt == 0)
			title.setY(0);
	}
}