ViewPager 嵌套Listview 让Listview响应 ViewPager 左右滑事件

Posted 2020-06-18

一段拦截判断而已.   之前一直误解了一个拦截的描述.导致搞了半天. 

 结论: onInterceptTouchEvent 返回true，就由本身View的onTouchEvent进行事件消费。

 

/**     在控件中 左右滑时 强制拦截事件的ViewPager
 * Created by user on 2016/3/7.
 */
public class MyViewPager extends ViewPager {
    private String TAG = "MyViewPager";
    private int startX;
    private int startY;
    public MyViewPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyViewPager(Context context) {
        super(context);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch (ev.getAction()){
            case MotionEvent.ACTION_DOWN:
                startX = (int) ev.getRawX();
                startY = (int) ev.getRawY();
                break;
            case MotionEvent.ACTION_MOVE:
                int endX = (int) ev.getRawX();
                int endY = (int) ev.getRawY();
                if (Math.abs(endX - startX) > Math.abs(endY - startY)) {// 左右滑动
                    return true;
                }else{
                    return super.onInterceptTouchEvent(ev);
                }
        }
        return super.onInterceptTouchEvent(ev);
    }
}