problem description
I have a function of drop-down refresh and pull-up load more. Now it"s okay to use the two functions alone, but when my list is scanned a certain height, I want to drop down and see what I crossed before, which triggers a drop-down refresh so that I can"t flip up
.try to solve
I put the official code copy into the project. There is also a question of whether there is a lack of packages or compatibility
.