/**
 * 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 OnScrollListener{
		public void onScrollChanged(int x, int y, int oldxX, int oldY);
		public void onScrollStopped();
		public void onScrollStoppedAtTop();
		public void onScrollStoppedAtBottom();
	}
	
	private OnScrollListener onScrollListener;
	
	/**
	 * 
	 * @param onScrollListener
	 */
	public void setOnScrollListener(OnScrollListener onScrollListener){
		this.onScrollListener=onScrollListener;
	}
	
	@Override
	protected void onScrollChanged(int x, int y, int oldX, int oldY){
		super.onScrollChanged(x, y, oldX, oldY);
		if(onScrollListener!=null){
			onScrollListener.onScrollChanged(x, y, oldX, oldY);
			onScrollListener.onScrollStopped();
            if(isAtTop()){
            	onScrollListener.onScrollStoppedAtTop();
    		}
            if(isAtBottom()){
    	    	onScrollListener.onScrollStoppedAtBottom();
    	    }
		}
	}
	
	/**
	 * 
	 * @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();
	}
}
@@ -858,16 +858,68 @@
 ollView%7B
+%0A%09%0A%09private static final int MIN_VERTICAL_SCROLL=10;
 %0A%0A%09publi
@@ -1809,16 +1809,63 @@
  oldY);%0A
+%09%09%09if(Math.abs(y-oldY)%3C=MIN_VERTICAL_SCROLL)%7B%0A%09
 %09%09%09onScr
@@ -1891,24 +1891,25 @@
 lStopped();%0A
+%09
             
@@ -1919,24 +1919,25 @@
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@@ -1982,16 +1982,17 @@
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@@ -2073,16 +2073,17 @@
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@@ -2085,16 +2085,21 @@
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修复：RLScrollView回调方法onScrollStopped