复制代码代码如下:

package com.sun.shine.study.innerscrollview.view; 
import android.content.Context; 
import android.util.AttributeSet; 
import android.view.MotionEvent; 
import android.view.View; 
import android.widget.ScrollView; 
public class InnerScrollView extends ScrollView { 
/** 
*/ 
public ScrollView parentScrollView; 
public InnerScrollView(Context context, AttributeSet attrs) { 
super(context, attrs); 
} 
private int lastScrollDelta = 0; 
public void resume() { 
overScrollBy(0, -lastScrollDelta, 0, getScrollY(), 0, getScrollRange(), 0, 0, true); 
lastScrollDelta = 0; 
} 
int mTop = 10; 
/** 
* 将targetView滚到最顶端 
*/ 
public void scrollTo(View targetView) { 
int oldScrollY = getScrollY(); 
int top = targetView.getTop() - mTop; 
int delatY = top - oldScrollY; 
lastScrollDelta = delatY; 
overScrollBy(0, delatY, 0, getScrollY(), 0, getScrollRange(), 0, 0, true); 
} 
private int getScrollRange() { 
int scrollRange = 0; 
if (getChildCount() > 0) { 
View child = getChildAt(0); 
scrollRange = Math.max(0, child.getHeight() - (getHeight())); 
} 
return scrollRange; 
} 
int currentY; 
@Override 
public boolean onInterceptTouchEvent(MotionEvent ev) { 
if (parentScrollView == null) { 
return super.onInterceptTouchEvent(ev); 
} else { 
if (ev.getAction() == MotionEvent.ACTION_DOWN) { 
// 将父scrollview的滚动事件拦截 
currentY = (int)ev.getY(); 
setParentScrollAble(false); 
return super.onInterceptTouchEvent(ev); 
} else if (ev.getAction() == MotionEvent.ACTION_UP) { 
// 把滚动事件恢复给父Scrollview 
setParentScrollAble(true); 
} else if (ev.getAction() == MotionEvent.ACTION_MOVE) { 
} 
} 
return super.onInterceptTouchEvent(ev); 
} 
@Override 
public boolean onTouchEvent(MotionEvent ev) { 
View child = getChildAt(0); 
if (parentScrollView != null) { 
if (ev.getAction() == MotionEvent.ACTION_MOVE) { 
int height = child.getMeasuredHeight(); 
height = height - getMeasuredHeight(); 
// System.out.println("height=" + height); 
int scrollY = getScrollY(); 
// System.out.println("scrollY" + scrollY); 
int y = (int)ev.getY(); 
// 手指向下滑动 
if (currentY < y) { 
if (scrollY <= 0) { 
// 如果向下滑动到头，就把滚动交给父Scrollview 
setParentScrollAble(true); 
return false; 
} else { 
setParentScrollAble(false); 
} 
} else if (currentY > y) { 
if (scrollY >= height) { 
// 如果向上滑动到头，就把滚动交给父Scrollview 
setParentScrollAble(true); 
return false; 
} else { 
setParentScrollAble(false); 
} 
} 
currentY = y; 
} 
} 
return super.onTouchEvent(ev); 
} 
/** 
* 是否把滚动事件交给父scrollview 
* 
* @param flag 
*/ 
private void setParentScrollAble(boolean flag) { 
parentScrollView.requestDisallowInterceptTouchEvent(!flag); 
} 
}