How to interact between adapt and fragment? - android-fragments

Question

I thank you in advance for your help. I am not a professional developer. I'm a teacher. I'm looking to create an app that can time student performance. I want to start a general stopwatch and stop the stopwatch individually. But, I encounter a problem either I don't have a crash but I can't interact on the individual stop button or I have a crash of type "binding.btnStop make not null"
Can you tell me how I can interact between the adapter and the fragment to link the general and individual timers and to stop the individual timer?
Thank you in advance for your help
Here is my code:
EvalFragment.class
var mDisplay: Display? = null
var path: String? = null
val REQUEST_CODE = 1
var isPlay = false
var pauseOffSet :Long = 0
//Test chrono millisec
var isResume = false
private lateinit var handler: Handler
var tMilliSec = 0L
var tStart = 0L
var tBuff = 0L
var tUpdate = 0L
var sec: Int = 0
var min: Int = 0
var milliSec: Int = 0
//Pour accéder au fab
private var _binding: FragmentEvalBinding? = null
private val binding get() = _binding!!
private lateinit var mUserViewModel: UserViewModel
private lateinit var mUserEvalViewModel: UserEvalViewModel
private val args by navArgs<EvalFragmentArgs>()
private lateinit var btPlay: ImageButton
private lateinit var btnPause: ImageButton
private lateinit var btStop: ImageButton
private lateinit var chronomter: Chronometer
#RequiresApi(Build.VERSION_CODES.R)
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
// Inflate the layout for this fragment
_binding = FragmentEvalBinding.inflate(inflater, container, false)
val view = binding.root
//Recyclerview pour afficher le custom row et les données
val adapter = EvalAdapter()
val recyclerView = view.findViewById<RecyclerView>(R.id.recyclerview_time)
recyclerView?.adapter = adapter
recyclerView?.layoutManager = LinearLayoutManager(requireContext())
mUserViewModel = ViewModelProvider(this).get(UserViewModel::class.java)
mUserEvalViewModel = ViewModelProvider(this).get(UserEvalViewModel::class.java)
chronomter = binding.chronometerGeneral
btPlay = binding.btStart
btStop = binding.btStop
btnPause = binding.btPause
handler = Handler()
btPlay.setOnClickListener {
if(!isResume){
tStart = SystemClock.uptimeMillis()
handler.postDelayed(runnable, 0)
chronomter.start()
binding.recyclerviewTime.chronometerIndividuel.start()
isResume = true
btStop.visibility = View.GONE
btPlay.setImageDrawable(resources.getDrawable(R.drawable.ic_pause))
} else {
tBuff += tMilliSec
handler.removeCallbacks(runnable)
chronomter.stop()
binding.recyclerviewTime.chronometerIndividuel.stop()
isResume = false
btStop.visibility = View.VISIBLE
btPlay.setImageDrawable(resources.getDrawable(R.drawable.ic_play))
}
}
btnPause.setOnClickListener {
pause()
}
btStop.setOnClickListener {
stop()
if(!isResume){
btPlay.setImageDrawable(resources.getDrawable(R.drawable.ic_play))
tMilliSec = 0L
tStart = 0L
tBuff = 0L
tUpdate = 0L
sec = 0
min = 0
milliSec = 0
chronomter.setText("00:00:00")
binding.recyclerviewTime.chronometerIndividuel.setText("00:00:00")
}
}
val userStart = args.currentUser.time
mUserEvalViewModel.readAllDataUserEval?.observe(viewLifecycleOwner, Observer { user ->
adapter.setDataEval(user)
})
val wm: WindowManager? =
activity?.getSystemService(Context.WINDOW_SERVICE) as WindowManager?
mDisplay = wm!!.defaultDisplay
if (ActivityCompat.checkSelfPermission(
requireContext(),
Manifest.permission.CAMERA
) != PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(
requireContext(),
Manifest.permission.READ_EXTERNAL_STORAGE
) != PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(
requireContext(),
Manifest.permission.WRITE_EXTERNAL_STORAGE
) != PackageManager.PERMISSION_GRANTED
) {
ActivityCompat.requestPermissions(
requireActivity(),
arrayOf(
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.CAMERA,
), REQUEST_CODE
)
} else {
Toast.makeText(
requireContext(),
"Veuillez accepter les permissions",
Toast.LENGTH_SHORT
).show()
}
// Add menu
setHasOptionsMenu(true)
return view
}
val runnable: Runnable = object : Runnable {
override fun run() {
tMilliSec = SystemClock.uptimeMillis() - tStart
tUpdate = tBuff + tMilliSec
sec = (tUpdate/1000).toInt()
min= sec/60
sec = sec%60
milliSec = (tUpdate%100).toInt()
chronomter.setText(String.format("%02d", min)+":"
+ String.format("%02d", sec)+":"+String.format("%02d", milliSec))
handler.postDelayed(this, 60)
}
}
private fun clicSound() {
val mediaPlayer: MediaPlayer = MediaPlayer.create(context, R.raw.positive_notification)
mediaPlayer.start()
}
private fun pause() {
if (isPlay){
chronomter.stop()
pauseOffSet = SystemClock.elapsedRealtime() - chronomter.base
isPlay = false
btnPause.setBackgroundResource(R.drawable.ic_play)
Toast.makeText(context,"Chronomètre: en Pause !!",Toast.LENGTH_SHORT).show()
}
else{
chronomter.base = SystemClock.elapsedRealtime() - pauseOffSet
chronomter.start()
btnPause.setBackgroundResource(R.drawable.ic_pause)
Toast.makeText(context,"Chronomètre : en route !!",Toast.LENGTH_SHORT).show()
isPlay = true
}
}
private fun play() {
chronomter.base = SystemClock.elapsedRealtime() - pauseOffSet
chronomter.start()
btPlay.setBackgroundResource(R.drawable.ic_stop)
Toast.makeText(context,"Chronomètre déclenché !!",Toast.LENGTH_SHORT).show()
isPlay =true
}
private fun stop() {
chronomter.base = SystemClock.elapsedRealtime()
pauseOffSet = 0
chronomter.stop()
btPlay.setBackgroundResource(R.drawable.ic_play)
Toast.makeText(context, "Chronomètre arrêté !!", Toast.LENGTH_SHORT).show()
isPlay = false
}
private fun reset(){
chronomter.base = SystemClock.elapsedRealtime() - pauseOffSet
chronomter.stop()
btnPause.visibility = View.INVISIBLE
btPlay.setBackgroundResource(R.drawable.ic_play)
Toast.makeText(context,"Chronomter is Start !!",Toast.LENGTH_SHORT).show()
isPlay = false
}
override fun onRequestPermissionsResult(
requestCode: Int,
permissions: Array<out String>,
grantResults: IntArray
) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if (requestCode == PackageManager.PERMISSION_GRANTED && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(requireContext(), "Permission Autorisée", Toast.LENGTH_SHORT).show()
} else {
Toast.makeText(requireContext(), "Permission Refusée", Toast.LENGTH_SHORT).show()
}
}
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.delete_menu, menu)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
if (item.itemId == R.id.menu_delete) {
// deleteAllEvals()
}
return super.onOptionsItemSelected(item)
}
}```
My EvalAdapter.class:
```class EvalAdapter: RecyclerView.Adapter<EvalAdapter.MyViewHolder>() {
var evalList = emptyList<UserWithEval>()
private lateinit var mUserViewModel: UserViewModel
private lateinit var mEvalViewModel: EvalViewModel
private lateinit var mUserWithEvalViewModel: UserEvalViewModel
private lateinit var firstName: String
private lateinit var lastName: String
private var idUser: Int = 0
private var user_id_reference: Int = 0
private var gru_id_reference: Int = 0
private var timeInterDepart = 0
private lateinit var chronoInd : Chronometer
private lateinit var chronoGeneral : Chronometer
private lateinit var context: Context
class MyViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) {}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
context = parent.context
return MyViewHolder(
LayoutInflater.from(parent.context).inflate(R.layout.custom_time, parent, false)
)
}
override fun getItemCount(): Int {
return evalList.size
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
val currentItemUser = evalList[position]
holder.itemView.findViewById<TextView>(R.id.firstName_txt).text = currentItemUser.firstName.uppercase()
holder.itemView.findViewById<TextView>(R.id.lastName_txt).text = currentItemUser.lastName.uppercase()
chronoInd = holder.itemView.findViewById(R.id.chronometerIndividuel)
holder.itemView.findViewById<Button>(R.id.bt_stop_individuel).setOnClickListener {
chronoInd.stop()
}
}
fun setDataEval(user: List<UserWithEval>){
this.evalList = user
notifyDataSetChanged()
}
}```
fragment_eval.xml:
```<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient_background"
android:orientation="horizontal"
android:id="#+id/fragEval">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview_time"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<androidx.appcompat.widget.LinearLayoutCompat
android:id="#+id/linearLayoutCompat"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:layout_margin="30dp"
android:background="#drawable/bg_round"
android:gravity="center"
android:orientation="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Chronometer
android:id="#+id/chronometerGeneral"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:format="00:00:00"
android:textColor="#color/white"
android:textSize="40sp"
android:textStyle="bold" />
<androidx.appcompat.widget.LinearLayoutCompat
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp">
<ImageButton
android:id="#+id/bt_start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/transparent_background"
android:src="#drawable/ic_play" />
<ImageButton
android:id="#+id/bt_stop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/transparent_background"
android:src="#drawable/ic_stop" />
<ImageButton
android:id="#+id/bt_pause"
android:visibility="invisible"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/transparent_background"
android:src="#drawable/ic_pause" />
</androidx.appcompat.widget.LinearLayoutCompat>
</androidx.appcompat.widget.LinearLayoutCompat>
<EditText
android:id="#+id/editTextTempsDepart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/custom_input_eval"
android:drawableLeft="#drawable/ic_chrono"
android:hint=" 15 "
android:inputType="number"
android:textSize="30sp"
app:layout_constraintBottom_toBottomOf="#+id/linearLayoutCompat"
app:layout_constraintEnd_toStartOf="#+id/linearLayoutCompat"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/validTempsDepart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/validate"
android:layout_marginLeft="20dp"
android:textSize="25sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="#+id/editTextTempsDepart"
app:layout_constraintStart_toEndOf="#+id/editTextTempsDepart"
app:layout_constraintTop_toTopOf="#+id/editTextTempsDepart" />
<TextView
android:id="#+id/tvTempsPremierDepart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/custom_input"
android:text="00 sec"
android:textSize="25sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="#+id/linearLayoutCompat"
app:layout_constraintTop_toBottomOf="#+id/linearLayoutCompat" />
</androidx.constraintlayout.widget.ConstraintLayout>
custom_time.xml:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient_background"
tools:context=".MainActivity">
//1ère ligne du chrono
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp"
android:layout_marginTop="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<Button
android:id="#+id/bt_stop_individuel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="50dp"
android:background="#drawable/shape_background"
android:text="#string/stop"
android:textColor="#color/white"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:id="#+id/firstName_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:text="#string/firstName"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="#+id/lastName_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:text="#string/lastName"
android:textSize="25sp"
android:textStyle="bold" />
<Chronometer
android:id="#+id/chronometerIndividuel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="30dp"
android:format="00:00:00"
android:text="00:00:00"
android:textSize="30sp"
android:textStyle="bold" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>