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North Face
Asked:2021-12-29 22:21:26 +0000 UTC2021-12-29 22:21:26 +0000 UTC

回收站视图。刷新列表和消失数据的问题

  • 772

数据来自数据库。第一次出现在recycleView 上时，记录（编号）显示正确。当您移动到某个元素并返回列表时，条目数可能会减少。您只能通过 update 重置状态notifyDataSetChanged()，但是，如果您在 中运行observer，则不会发生任何事情。

Fragment

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    recyclerViewEmployee.also { rv ->
        rv.layoutManager = LinearLayoutManager(activity)
        rv.addItemDecoration(DividerItemDecoration(activity, LinearLayoutManager.VERTICAL))
        rv.adapter = specialityAdapter
    }

    (arguments?.get("specialty") as Specialty).let { it ->
        specialtyName = it.name

        employeeSpecialtyViewModel.getAllEmployee(it.specialtyId)
            .observe(viewLifecycleOwner, Observer { response ->
                response?.also {
                    specialityAdapter.updateData(response)
                    recyclerViewEmployee.recycledViewPool.clear()
                }
            })
    }
}

将错误重置为正常操作：

    test.setOnClickListener {
        (recyclerViewEmployee.adapter as EmployeeAdapter).notifyDataSetChanged()
    }

updataData()

fun updateData(data: List<Employee>) {
    this.employeeList = data
    notifyDataSetChanged()
}
android

1 个回答

  1. Best Answer

    代替

    this.employeeList = 数据

    在

    this.employeeList.clear();
this.employeeList.addAll(data);

    notifyDataSetChanged() 不起作用，因为 您不会更改现有数据，而是用新数据替换它们

    • 0

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