Я пытался извлечь данные из Firebase, используя childeventlistener. Я видел все методы, доступные в stackoverflow для решения проблемы, но ничего не помогало. Код указан ниже
ViewModel
class AccepyReqViewModel : ViewModel() {
companion object {
const val TAG = "AcceptViewModel"
}
private val _userdetail = MutableLiveData<User>()
val userdetail: LiveData<User>
get() = _userdetail
private val userid = FirebaseAuth.getInstance().currentUser?.uid
private val chatrequest = "CHATREQ"
private val db_chat = FirebaseDatabase.getInstance().getReference(chatrequest)
private val company_info = "User_Info"
private val db_company = FirebaseDatabase.getInstance().getReference(company_info)
private val reqchildeventlister = object : ChildEventListener {
override fun onCancelled(error: DatabaseError) {}
override fun onChildMoved(snapshot: DataSnapshot, p1: String?) {
}
override fun onChildChanged(snapshot: DataSnapshot, p1: String?) {
}
override fun onChildAdded(snapshot: DataSnapshot, p1: String?) {
val getid = snapshot.getValue(Request::class.java)
val id = getid!!.id
val requesttype = getid.requesttype
Log.d(TAG, "Second function to be called")
Log.d(TAG, "$requesttype request type")
id?.let { getDetails(it) }
Log.d(TAG, "$id ID passed")
}
override fun onChildRemoved(snapshot: DataSnapshot) {
}
}
fun getRequest() {
Log.d(TAG, "getRequest method called 1st fun")
db_chat.child(userid!!).addChildEventListener(reqchildeventlister)
}
fun getDetails(id: String) {
Log.d(TAG, "Second function called")
db_company.child(id).addChildEventListener(datachildeventlistener)
}
private val datachildeventlistener = object : ChildEventListener {
override fun onCancelled(error: DatabaseError) {
}
override fun onChildMoved(snapshot: DataSnapshot, p1: String?) {
}
override fun onChildChanged(snapshot: DataSnapshot, p1: String?) {
Log.d(TAG, "onChildChanged")
val data = snapshot.getValue(User::class.java)
data?.id = snapshot.key
_userdetail.value = data
}
override fun onChildAdded(snapshot: DataSnapshot, p1: String?) {
val data = snapshot.getValue(User::class.java)
data?.id = snapshot.key
_userdetail.value = data
}
override fun onChildRemoved(snapshot: DataSnapshot) {
}
}
}
Класс модели выглядит следующим образом
import com.google.firebase.database.Exclude
data class User(
@get:Exclude
var id: String? = null,
var isAdmin: Boolean? = true,
var name: String? = null,
var position: String? = null,
var contact: String? = null,
var comname: String? = null,
var address: String? = null,
var email: String? = null,
var website: String? = null
) {
constructor() : this("", true, "", "", "", "", "", "", "")
}
База данных Firebase Realtime выглядит следующим образом
CHATREQ
8EFvXhAKTfWuIavGhXlz344bgMD2
c2HUyNV6sYQImIFqVNMfIaFDTKT2
id: "c2HUyNV6sYQImIFqVNMfIaFDTKT2"
request_type: "sent"
c2HUyNV6sYQImIFqVNMfIaFDTKT2
8EFvXhAKTfWuIavGhXlz344bgMD2
id: "8EFvXhAKTfWuIavGhXlz344bgMD2"
request_type: "received"
Company_Info
-M6Ez9RiFRpm8_cn35Pp
User_Info
8EFvXhAKTfWuIavGhXlz344bgMD2
admin: false
contact: "484615674"
name: "Chetan"
position: "c"
c2HUyNV6sYQImIFqVNMfIaFDTKT2
address: "add"
admin: true
comname: "Palekar"
contact: "549874561"
email: "add@gmail.com"
name: "Kp"
position: "adfa"
website: "www.add.com"
В стековой трассировке сказано, что «невозможно преобразовать объект строки в пользовательский класс модели». Надеюсь, кто-нибудь поможет мне в этом. Спасибо за вашу помощь.