Flutter如何检测PageView onTapUp

Question

我用PageView写了一个垂直方向的列表。现在，当我向上或向下滑动列表时(我的手指没有离开屏幕)，onPageChanged 将执行。有没有办法检测到onPageChanged方法只有在手指离开屏幕时才会执行。下面部分代码:

    SizedBox(
            width: 200,
            height: 200,
            child: PageView(
                controller: pageController,
                scrollDirection: Axis.vertical,
                onPageChanged: (index) {
                  setState(() {
                    pageIndex = index;
                  });
                },
                children: _buildCardList()),
          )

如下所示:

Answer 1

使用如下所示的通知监听器包装您的页面 View :

  SizedBox(
            width: 100,
            height: 100,
            child: NotificationListener<ScrollNotification>(
              onNotification: (notification)
              {
                if(notification is ScrollEndNotification)
                  {

                    var pageIndex = pageController.page;
                  }

              },
              child: PageView(
                  controller: pageController,
                  scrollDirection: Axis.vertical,
                  onPageChanged: (index) {
                  },
                  children: _buildCardList()),
            ),
          )