Server JSON Data parsing using retrofit2 and rxjava2. Data get and successfully stored in List when go to CompanyAdapter class then give above error.
MainActivity.kt
private fun fetchData(){
val retrofit = APIClient.apIClient
if (retrofit != null) {
api = retrofit.create(APIInterface::class.java)
}
compositeDisposable!!.add(api.getCompanyData()
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe{displayData(it.company)
}
)
}
private fun displayData(companyList : List<Company>) {
adapter = CompanyAdapter(this, companyList)
rvCompany.adapter = adapter
}
ComnyAdapter.kt
class CompanyAdapter(internal var context: Context, internal var companyList: List<Company>)
:RecyclerView.Adapter<CompanyAdapter.CompanyViewHolder>()
{
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): CompanyViewHolder {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
val itemView = LayoutInflater.from(p0.context).inflate(R.layout.list_view_item,p0,false)
return CompanyViewHolder(itemView)
}
override fun getItemCount(): Int {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
return companyList.size
}
override fun onBindViewHolder(p0: CompanyViewHolder, p1: Int) {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
p0.bindModel(companyList[p1])
}
inner class CompanyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val radioButton : RadioButton = itemView.findViewById(R.id.rbCompanyName)
fun bindModel(company: Company){
radioButton.text = company.Cmp_Name
}
}
}
The reason is simple: when you exec a line with TODO, it throws a Not Implemented Exception.
Just remove all the TODO from your code:
class CompanyAdapter(internal var context: Context, internal var companyList: List<Company>)
:RecyclerView.Adapter<CompanyAdapter.CompanyViewHolder>()
{
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): CompanyViewHolder {
val itemView = LayoutInflater.from(p0.context).inflate(R.layout.list_view_item,p0,false)
return CompanyViewHolder(itemView)
}
override fun getItemCount(): Int {
return companyList.size
}
override fun onBindViewHolder(p0: CompanyViewHolder, p1: Int) {
p0.bindModel(companyList[p1])
}
inner class CompanyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val radioButton : RadioButton = itemView.findViewById(R.id.rbCompanyName)
fun bindModel(company: Company){
radioButton.text = company.Cmp_Name
}
}
}
Related
class SummonerInfoActivity: AppCompatActivity() {
private lateinit var participantAdapter: ParticipantAdapter
private val recycler: RecyclerView by lazy {
findViewById(R.id.RecyclerView)
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val Summoner = intent.getParcelableExtra<SummonerDTO>("SummonerDTO")
Log.e("Info","${Summoner}")
val retrofit2 = Retrofit.Builder()
.baseUrl("https://asia.api.riotgames.com")
.addConverterFactory(GsonConverterFactory.create())
.build()
lolAPIForMatch = retrofit2.create(lolAPIService::class.java)
setContentView(R.layout.activity_summoner_info)
participantAdapter = ParticipantAdapter()
recycler.adapter = participantAdapter
recycler.layoutManager = LinearLayoutManager(this#SummonerInfoActivity)
getMatchIdBypuuid(Summoner?.puuId.orEmpty(),Summoner?.summonerName.orEmpty())
}
private fun getMatchIdBypuuid(puuid: String,summonerName: String){
lolAPIForMatch.getMatchIdBypuuid(puuid, 0,20, API_KEY)
.enqueue(object : Callback<List<String>> {
override fun onResponse(
call: Call<List<String>>,
response: Response<List<String>>
) {
if(response.isSuccessful.not()){
return
}
response.body()?.let {
it.forEach {
searchMatchInfoByMatchID(it,summonerName)
}
}
}
override fun onFailure(call: Call<List<String>>, t: Throwable) {
}
})
}
private fun searchMatchInfoByMatchID(matchId: String,summonerName: String){
lolAPIForMatch.getMatchInfoByMatchID(matchId, API_KEY)
.enqueue(object : Callback<MatchDTO>{
override fun onResponse(call: Call<MatchDTO>, response: Response<MatchDTO>) {
if(response.isSuccessful.not()){
return
}
response.body()?.let {
it.info.participants.filter {
it.summonerName == "${summonerName}"
}.forEach {
participantAdapter.participants.add(it)
}
}
}
override fun onFailure(call: Call<MatchDTO>, t: Throwable) {
}
})
}
}
class ParticipantAdapter: RecyclerView.Adapter<ParticipantAdapter.ViewHolder>() {
var participants = mutableListOf<ParticipantDTO>()
inner class ViewHolder(itemView: View): RecyclerView.ViewHolder(itemView){
fun bind(participant: ParticipantDTO){
itemView.findViewById<TextView>(R.id.kill).text = participant.kills.toString()
itemView.findViewById<TextView>(R.id.death).text = participant.deaths.toString()
itemView.findViewById<TextView>(R.id.assist).text = participant.assists.toString()
}
}
override fun onCreateViewHolder(
parent: ViewGroup,
viewType: Int
): ParticipantAdapter.ViewHolder {
val inflater = LayoutInflater.from(parent.context)
return ViewHolder(inflater.inflate(R.layout.item_match, parent, false))
}
override fun onBindViewHolder(holder: ParticipantAdapter.ViewHolder, position: Int) {
holder.bind(participants[position])
}
override fun getItemCount(): Int {
return participants.size
}
}
participantAdapter.participants.add(it)
The command is searchMatchInfoByMatchID
In the function, you can check that the value is entered correctly, but
If you check in the onCreate function, the value is not assigned.
I want to use the recycler view by properly assigning a value
I tried to solve this problem, but my skills were not enough.
I desperately need the advice of seniors.
I would really appreciate it if you could show me a code sample if possible
I am using kotlin language with android studio. I want to get the properties of the element I clicked in the RecyclerView.
Ben bu kod ile saderc id alabiliyorum
Ex: date
ListAdapter.kt
class ListAdapter(
private val context: Context
) : RecyclerView.Adapter<ListAdapter.ListViewHolder>() {
private var dataList = mutableListOf<Any>()
private lateinit var mListener: onItemClickListener
interface onItemClickListener {
fun onItemClick(position: Int)
}
fun setOnItemClickListener(listener: onItemClickListener) {
mListener = listener
}
fun setListData(data: MutableList<Any>) {
dataList = data
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ListViewHolder {
val view = LayoutInflater.from(context).inflate(R.layout.item_row, parent, false)
return ListViewHolder(view)
}
override fun onBindViewHolder(holder: ListViewHolder, position: Int) {
val question: Questionio = dataList[position] as Questionio
holder.bindView(question)
}
override fun getItemCount(): Int {
return if (dataList.size > 0) {
dataList.size
} else {
return 0
}
}
inner class ListViewHolder(itemView: View, listener: onItemClickListener) :
RecyclerView.ViewHolder(itemView) {
fun bindView(questionio: Questionio) {
itemView.findViewById<TextView>(R.id.txt_policlinic).text = questionio.policlinic
itemView.findViewById<TextView>(R.id.txt_title).text = questionio.title
itemView.findViewById<TextView>(R.id.txt_description).text = questionio.description
itemView.findViewById<TextView>(R.id.txt_date).text = questionio.date
itemView.findViewById<TextView>(R.id.txt_time).text = questionio.time
}
init {
itemView.setOnClickListener {
listener.onItemClick(adapterPosition)
}
}
}
}
My code in onCreateView inside list fragment.Edit
ListFragment
recyclerView.layoutManager = LinearLayoutManager(requireContext())
recyclerView.adapter = adapter
observeData()
adapter.setOnItemClickListener(object : ListAdapter.onItemClickListener {
override fun onItemClick(position: Int) {
showShortToast(position.toString())
}
})
this function is also my observationData(),
I made new edits
private fun observeData() {
binding.shimmerViewContainer.startShimmer()
listViewModel.fetchQuestinData("questions",
requireContext())
.observe(viewLifecycleOwner, {
binding.shimmerViewContainer.startShimmer()
binding.shimmerViewContainer.hideShimmer()
binding.shimmerViewContainer.hide()
adapter.setListData(it)
adapter.notifyDataSetChanged()
})
}
You can pass highOrderFuction into the adapter then setonclickListener for any view you want. Like this:
class ListAdapter(
private val context: Context,
private val onItemClick:(questionio: Questionio)->Unit
) : RecyclerView.Adapter<ListAdapter.ListViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ListViewHolder {
val view = LayoutInflater.from(context).inflate(R.layout.item_row, parent, false)
return ListViewHolder(view,onItemClick)
}
...
inner class ListViewHolder(itemView: View,private val onItemClick:(questionio: Questionio)->Unit) : RecyclerView.ViewHolder(itemView) {
fun bindView(questionio: Questionio) {
//set on any view you want
itemView.findViewById<TextView>(R.id.root_view_id).
setOnClickListener{onItemClick(questionio)}
itemView.findViewById<TextView>(R.id.txt_policlinic).text =
questionio.policlinic
itemView.findViewById<TextView>(R.id.txt_title).text = questionio.title
itemView.findViewById<TextView>(R.id.txt_description).text =
questionio.description
itemView.findViewById<TextView>(R.id.txt_date).text = questionio.date
itemView.findViewById<TextView>(R.id.txt_time).text = questionio.time
}
}
}
I have code in ListBukpotAdapter, how can I get data listener.OnClick(currentItem) to parse on other UpdateActivity
Error:
kotlin.UnitializedPropertyAccessExeption: lateinit property listener has not been initialized
class ListBukpotAdapter : RecyclerView.Adapter<ListBukpotAdapter.MyViewHolder>() {
private var bukpotList = emptyList<QrResultBukpot>()
private lateinit var listener: OnAdapterListener
interface OnAdapterListener {
fun OnClick(bukpotDataParsing: QrResultBukpot)
}
class MyViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) {}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
return MyViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.custom_row_bukpot, parent, false))
}
override fun getItemCount(): Int {
return bukpotList.size
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
val currentItem = bukpotList[position]
holder.itemView.txtNomorBukpot.text = currentItem.nomorBukpot
holder.itemView.txtNpwpPemotong.text = currentItem.npwpPemotong
holder.itemView.txtMasaPajak.text = currentItem.masaPajak + " / " + currentItem.tahunPajak
holder.itemView.txtMixCode.text = currentItem.mixCode
holder.itemView.rowLayoutBukpot.setOnClickListener {
listener.OnClick(currentItem)
val context = holder.itemView.context
val intent = Intent(context, UpdateBukpotActivity::class.java)
context.startActivity(intent)
}
}
fun setDataBukpot(bukpot: List<QrResultBukpot>){
this.bukpotList = bukpot
notifyDataSetChanged()
}
}
You should initilaze your listener. Your listener variable is lateinit so before you use this, you need to initialize. You can give listener as a constructor parameter from your activity or fragment and can listen interface from your activity or fragment which contains recyclerview.
I'm parsing API and it's logging in the logcat, but I have a problem while retrieving it and using that data in a recycleview. These are my code snippets:
class MainActivity : AppCompatActivity() {
private val users = arrayListOf<User>()
private lateinit var adapter: RecyclerViewAdapter
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
init()
}
private fun init() {
adapter = RecyclerViewAdapter(users)
recyclerView.layoutManager = LinearLayoutManager(this)
recyclerView.adapter = adapter
val myViewModel : UsersViewModel by viewModel()
myViewModel.getAllUsers().observe(this, Observer {
users.add(it)
adapter.notifyDataSetChanged()
})
myViewModel.getUsers()
d("allUsers", users.size.toString())
}
}
I cannot set the data in a recyclerview, can anyone give me a hint? I could not find a proper source or code snippet to understand how I'm able to parse the data using a converter.
class UsersRequest {
private var retrofit = Retrofit.Builder()
.baseUrl("https://reqres.in/api/")
.addConverterFactory(ScalarsConverterFactory.create())
.build()
private var service = retrofit.create(ApiService::class.java)
interface ApiService {
#GET("users?page=1")
fun getRequest(): Call<String>
}
fun getRequest(callback: CustomCallback) {
val call = service.getRequest()
call.enqueue(onCallback(callback))
}
private fun onCallback(callback: CustomCallback): Callback<String> = object : Callback<String> {
override fun onFailure(call: Call<String>, t: Throwable) {
d("response", "${t.message}")
callback.onFailure(t.message.toString())
}
override fun onResponse(call: Call<String>, response: Response<String>) {
d("response", "${response.body()}")
callback.onSuccess(response.body().toString())
}
}
}
class RecyclerViewAdapter(private val users: ArrayList<User>) :
RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
return ViewHolder(
LayoutInflater.from(parent.context).inflate(
R.layout.user_layout,
parent,
false
)
)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
return holder.onBind()
}
override fun getItemCount() = users.size
private lateinit var user:User
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
fun onBind() {
user = users[adapterPosition]
itemView.name.text = user.first_name
}
}
}
User(
val id: Int,
val email: String,
val first_name: String,
val last_name: String,
val avatar: String
)
with adapter class RecyclerViewAdapter(private val users: MutableList<User>) : RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder>() { ...
Add this method to your adapter :
fun setUsers(usersList: List<User>) {
this.users.clear()
this.users.addAll(usersList)
notifyDataSetChanged()
}
and in MainActivity simply put :
myViewModel.getAllUsers().observe(this, Observer {
users -> hideLoading() // If you have a progress bar, here you can hide it
users?.let {
adapter.setUsers(users) }
})
Data Load in Recyclerview after Generated Click Event Item using Interface on
Activity. code is below but Activity onItemCompanyClick is not execute.
How to Generate click event and get Value from the recyclerview using interfce.
MainActivity.kt
class Company : AppCompatActivity(),CompanyAdapter.Listner{
override fun onItemCompanyClick(company: Company) {
Toast.makeText(this, "You clicked: ${company.Cmp_Name}", Toast.LENGTH_LONG).show()
}
}
CompanyAdapter.kt
class CompanyAdapter(private val listner :Listner, internal var companyList: List<Company>)
:RecyclerView.Adapter<CompanyAdapter.CompanyViewHolder>()
{
interface Listner {
fun onItemCompanyClick(company: Company)
}
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): CompanyViewHolder {
val itemView = LayoutInflater.from(p0.context).inflate(R.layout.list_view_item,p0,false)
return CompanyViewHolder(itemView)
}
override fun getItemCount(): Int {
return companyList.size
}
override fun onBindViewHolder(p0: CompanyViewHolder, p1: Int) {
// p0.rbButton.text = this!!.companyList?.get(p1)?.Cmp_Name
p0.bindModel(companyList[p1])
}
inner class CompanyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val radioButton : RadioButton = itemView.findViewById(R.id.rbCompanyName)
fun bindModel(company: Company){
radioButton.text = company.Cmp_Name
}
}
}
Your interface is never called, you should call if when user click on your button.
Try something like:
MainActivity.kt
class Company : AppCompatActivity(),CompanyAdapter.Listner{
override fun onItemCompanyClick(company: Company){
Toast.makeText(this, "You clicked: ${company.Cmp_Name}", Toast.LENGTH_LONG).show()
}
}
CompanyAdapter.kt
class CompanyAdapter(private val listner :Listner, internal var companyList: List<Company>)
:RecyclerView.Adapter<CompanyAdapter.CompanyViewHolder>()
{
interface Listner{
fun onItemCompanyClick(company: Company)
}
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): CompanyViewHolder {
val itemView = LayoutInflater.from(p0.context).inflate(R.layout.list_view_item,p0,false)
return CompanyViewHolder(itemView)
}
override fun getItemCount(): Int {
return companyList.size
}
override fun onBindViewHolder(p0: CompanyViewHolder, p1: Int) {
// p0.rbButton.text = this!!.companyList?.get(p1)?.Cmp_Name
p0.bindModel(companyList[p1])
}
inner class CompanyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val radioButton : RadioButton = itemView.findViewById(R.id.rbCompanyName)
fun bindModel(company: Company){
radioButton.text = company.Cmp_Name
radioButton.setOnClickListener(_ -> listner.onItemCompanyClick(company))
}
}
}
Also read this guide about interface, hope it helps.