package cc.newnews.view; 
import android.content.Context; 
import android.util.AttributeSet; 
import android.view.GestureDetector; 
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent; 
import android.widget.ScrollView; 
public class VerticalScrollView extends ScrollView {
  private GestureDetector mGestureDetector; 
  public VerticalScrollView(Context context, AttributeSet attrs) {
    super(context, attrs); 
    mGestureDetector = new GestureDetector(context, new YScrollDetector());
  } 
  @Override 
  public boolean onInterceptTouchEvent(MotionEvent ev) {
    return super.onInterceptTouchEvent(ev) 
        && mGestureDetector.onTouchEvent(ev); 
  } 
  class YScrollDetector extends SimpleOnGestureListener {
    @Override 
    public boolean onScroll(MotionEvent e1, MotionEvent e2, 
        float distanceX, float distanceY) { 
      /** 
       * 如果我们滚动更接近水平方向,返回false,让子视图来处理它
       */ 
      return (Math.abs(distanceY) > Math.abs(distanceX)); 
    } 
  } 
}