父视图对子试图的拦截操作

说明:如果返回值是true :表示拦截成功,反之拦截失败 ​

private int lastY;
  private int lastX, downX, downY;
    //父视图对子试图的拦截操作
    //如果返回值是true :表示拦截成功,反之拦截失败
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        boolean isIntercept = false;
        int eventY = (int) ev.getY();
        int eventX = (int) ev.getX();
        switch (ev.getAction()) {
            case MotionEvent.ACTION_DOWN:

                lastX = downX = eventX;
                lastY = downY = eventY;
                break;
            case MotionEvent.ACTION_MOVE:
                int totalX = Math.abs(eventX - downX);
                int totalY = Math.abs(eventY - downY);

                if (totalY > totalX && totalY > 10) {
                    isIntercept = true;

                }

                lastX = eventX;
                lastY = eventY;
                break;
            case MotionEvent.ACTION_UP:

                break;
        }
        return isIntercept;
    }

希望能对大家有所帮助,欢迎大家一起讨论交流.

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