/**
 * Copyright (c) 2013-2014, Rinc Liu (http://rincliu.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.rincliu.library.widget;

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ScrollView;

public class RLScrollView extends ScrollView{

	public RLScrollView(Context context) {
		super(context);
	}
	
	public RLScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}
	
	public RLScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}
	
	public interface OnScrollChangedListener{
		public void onScrollChanged();
	}
	
	private OnScrollChangedListener onScrollChangedListener;
	
	/**
	 * 
	 * @param onScrollChangedListener
	 */
	public void setOnScrollChangedListener(OnScrollChangedListener onScrollChangedListener){
		this.onScrollChangedListener=onScrollChangedListener;
	}
	
	@Override
	protected void onScrollChanged(int l, int t, int oldl, int oldt){
		super.onScrollChanged(l, t, oldl, oldt);
		if(onScrollChangedListener!=null){
			onScrollChangedListener.onScrollChanged();
		}
	}
	
	/**
	 * 
	 * @param child
	 * @return
	 */
	public boolean isChildVisible(View child){
		if(child==null){
			return false;
		}
		Rect scrollBounds = new Rect();
		getHitRect(scrollBounds);
		return child.getLocalVisibleRect(scrollBounds);
	}
	
	/**
	 * 
	 * @return
	 */
	public boolean isAtTop(){
		return getScrollY()<=0;
	}
	
	/**
	 * 
	 * @return
	 */
	public boolean isAtBottom(){
		return getChildAt(getChildCount()-1).getBottom()+getPaddingBottom()
				==getHeight()+getScrollY();
	}
}
@@ -1196,24 +1196,56 @@
 rollChanged(
+int l, int t, int oldl, int oldt
 );%0A%09%7D%0A%09%0A%09pri
@@ -1702,16 +1702,32 @@
 Changed(
+l, t, oldl, oldt
 );%0A%09%09%7D%0A%09

修改RLScrollView的方法参数；