Android：双层嵌套ViewPager并添加单击事件

仿网易新闻：

 

实现原理:

上面的导航栏是一个自定义的ViewGroup(类似ActionBar)

中间内容层是ViewPager套fragment实现左右切换滑动

fragment里面的布局是一个ListView 附带下拉刷新和下拉加载效果

HeadView是一个ViewPager

双层ViewPager如果处理子ViewPager的滑动冲突问题和点击事件

通过自定义子ViewPager的方法：

public class TeacherViewPager extends ViewPager implements OnGestureListener {

    private GestureDetector mDetector;
    
    public TeacherViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
        GestureDetector detector = new GestureDetector(context, this);
        mDetector = detector;
    }
    
    public GestureDetector getGestureDetector() {
        return mDetector;
    }

    @Override
    public boolean onDown(MotionEvent e) {
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
    }

    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        LogUtil.info("json", "onSingleTapUp");
        if(listener != null) {
            listener.setOnSimpleClickListenr(getCurrentItem());
        }
        return true;
    }
    
    
    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
            float distanceY) {
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
        return false;
    }
    
    private onSimpleClickListener listener;
    
    public interface onSimpleClickListener {
        void setOnSimpleClickListenr(int position);
    }
    
    public void setOnSimpleClickListener(onSimpleClickListener listener) {
        this.listener = listener;
    }

}

onTouchEvent处理事件：

        advPager.setOnTouchListener(new OnTouchListener() {  
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                
                advPager.getGestureDetector().onTouchEvent(event);
                
                // TODO Auto-generated method stub
                final float x = event.getRawX();
                final float y = event.getRawY();
                
                switch (event.getAction()) {  
                case MotionEvent.ACTION_DOWN:  
                       LogUtil.verbose("json", "ACTION_DOWN");
                    xDistance = yDistance = 0f;
                    mLastMotionX = x;
                    mLastMotionY = y;
                case MotionEvent.ACTION_MOVE:  
                    LogUtil.verbose("json", "ACTION_MOVE, x: " + x + ", y: " + y);
                    
                    final float xDiff = Math.abs(x - mLastMotionX);
                    final float yDiff = Math.abs(y - mLastMotionY);
                    xDistance += xDiff;
                    yDistance += yDiff;
                    
                    float dx = xDistance - yDistance;
                    LogUtil.info("json", "ACTION_MOVE dx= " + dx + ",xDistance: " + xDistance + ", yDistance: " + yDistance);
                    if (xDistance > yDistance || Math.abs(xDistance - yDistance) < 0.00001f) {
                        LogUtil.warn("json", "ACTION_MOVE interceptor.");
                        mIsBeingDragged = true;
                        mLastMotionX =  x;
                        mLastMotionY = y;
                        ((ViewParent) v.getParent()).requestDisallowInterceptTouchEvent(true);
                    } else {
                        mIsBeingDragged = false;
                        ((ViewParent) v.getParent()).requestDisallowInterceptTouchEvent(false);
                    }
                    break;  
                case MotionEvent.ACTION_UP:  
                    LogUtil.verbose("json", "ACTION_UP");
                     break;  
                case MotionEvent.ACTION_CANCEL:
                    LogUtil.verbose("json", "ACTION_CANCEL");
                    LogUtil.verbose("json", "mIsBeingDragged=" + mIsBeingDragged + " xDistance= " + xDistance + " y=" + yDistance);
                    if(mIsBeingDragged) {
                        ((ViewParent) v.getParent()).requestDisallowInterceptTouchEvent(false);
                    }
                    break;
                default:  
                    break;  
                }  
                return false;  
            }  
        });  

 源码下载链接：https://files.cnblogs.com/gongcb/%E5%8E%8B%E7%BC%A9%E5%8C%85.zip