修复选项卡切换+下拉刷新滚动到底部后按住一直上拉不断触发上拉加载的bug
修复选项卡切换+下拉刷新滚动到底部后按住一直上拉不断触发上拉加载的bug

webcoding/mui,dcloudio/mui,miu-wen/mui,webcoding/mui,MoGaven/mui,miu-wen/mui,webcoding/mui,dcloudio/mui,MoGaven/mui,coffeefuture/mui,coffeefuture/mui,MoGaven/mui,miu-wen/mui,dcloudio/mui