更改数据库时 Firestore Recyclerview 不会实时更新

Question

我有一个片段，里面有两个 recyclerviews。一个显示拾取列表，另一个显示缺席列表。当数据库中发生任何更改时，拾取列表可以完美运行并立即更新。但是，在进行更改时，缺席列表不会立即更新。如果我在数据库中进行更改，然后切换到不同的片段，然后返回，我会看到更改。我似乎无法弄清楚为什么选择列表有效，而缺席列表无效。

片段代码

override fun onStart() {
    super.onStart()

    //Query for Pickup Request
    var pickupQuery =
        db.collection("Users").whereNotEqualTo("pickupTime", "").orderBy("pickupTime")
    // RecyclerOptions for Pickup Request
    var pickupOptions = pickupFirestoreOptions(pickupQuery)

    pickupAdapter = PickupAdapter(pickupOptions)
    binding.rvPickupList.adapter = pickupAdapter
    binding.rvPickupList.layoutManager =
        LinearLayoutManager(requireContext())

    // Query for Absent Request
    val today = LocalDateTime.now()
    val formattedToday = "${today.monthValue}-${today.dayOfMonth}-${today.year}"
    var absentQuery = db.collection("Users").whereArrayContains("absentDates", formattedToday)
        .orderBy("studentFirstName")
    // RecyclerOptions for Absent Request
    var absentOptions = absentFirestoreOptions(absentQuery)

    absentAdapter = AbsentAdapter(absentOptions)
    binding.rvAbsentList.adapter = absentAdapter
    binding.rvAbsentList.layoutManager =
        GridLayoutManager(requireContext(), 4)

    pickupAdapter.startListening()
    absentAdapter.startListening()
}

override fun onDestroy() {
    super.onDestroy()
    _binding = null
    pickupAdapter.stopListening()
    absentAdapter.stopListening()
}

private fun pickupFirestoreOptions(query: Query): FirestoreRecyclerOptions<PickupData> {
    return FirestoreRecyclerOptions.Builder<PickupData>()
        .setQuery(query, SnapshotParser<PickupData> {
            val studentName =
                "${it.getString("studentFirstName")} ${it.getString("studentLastName")}"
            var atCenter = it.getBoolean("atCenter")!!
            val userId = it.id
            val pickupTime = it.getString("pickupTime")!!
            PickupData(studentName, atCenter, userId, pickupTime)
        }).build()
}

private fun absentFirestoreOptions(query: Query): FirestoreRecyclerOptions<AbsentData> {
    return FirestoreRecyclerOptions.Builder<AbsentData>()
        .setQuery(query, SnapshotParser<AbsentData> {
            val studentName =
                "${it.getString("studentFirstName")} ${it.getString("studentLastName")}"
            AbsentData(studentName)
        }).build()
}

缺少适配器代码

class AbsentAdapter(options: FirestoreRecyclerOptions<AbsentData>) :
    FirestoreRecyclerAdapter<AbsentData, AbsentAdapter.AbsentAdapterViewHolder>(options) {

class AbsentAdapterViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AbsentAdapterViewHolder {
    return AbsentAdapterViewHolder(
        LayoutInflater.from(parent.context).inflate(R.layout.item_absentlist, parent, false)
    )
}

override fun onBindViewHolder(
    holder: AbsentAdapterViewHolder,
    position: Int,
    model: AbsentData
) {
    holder.itemView.apply {
        tvStudentOne.text = model.studentName
    }
}

}

取件适配器代码

class PickupAdapter(options: FirestoreRecyclerOptions<PickupData>) :
    FirestoreRecyclerAdapter<PickupData, PickupAdapter.PickupAdapterViewHolder>(options) {

val db = FirebaseFirestore.getInstance()

class PickupAdapterViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PickupAdapterViewHolder {
    return PickupAdapterViewHolder(
        LayoutInflater.from(parent.context).inflate(R.layout.item_pickuplist, parent, false)
    )
}

override fun onBindViewHolder(
    holder: PickupAdapterViewHolder,
    position: Int,
    model: PickupData
) {
    holder.itemView.apply {
        tvStudentName.text = model.studentName
        tvPickupTime.text = "Pickup Time: ${model.pickupTime}"
        btnSignOut.setOnClickListener {
            db.collection("Users").document(model.userId).update("atCenter", !model.atCenter) 
            val dateTime = LocalDateTime.now()
            val date = "${dateTime.monthValue}-${dateTime.dayOfMonth}-${dateTime.year}"
            val time = "${dateTime.hour}:${dateTime.minute}"
            db.collection("Users").document(model.userId).update("signOutLog", FieldValue.arrayUnion("$date $time"))
            db.collection("Users").document(model.userId).update(hashMapOf<String, Any>("pickupTime" to FieldValue.delete()))
        }
    }
}

}