display list view in fragment kotlin - kotlin

Question

l want display my list view in fragment , l used separated listview adpater .
l got error in class adapter under line val view : View = LayoutInflater.from(context,this).inflate(R.layout.arr_list,parent,false)
class fragment
class fragment_Arr :Fragment(), View.OnClickListener {
override fun onClick(v: View?) {
// val intent = Intent(context, FlightsArrbefor::class.java)
// context!!.startActivity(intent)
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val view = inflater.inflate(R.layout.fragment_arrivel,container,false)
val url = "xxxxxxxx/airport.json?code=BGW"
Arr().execute(url)
return view
}
inner class Arr : AsyncTask<String, String, String>(){
override fun onPreExecute() {
super.onPreExecute()
}
// for build connection
override fun doInBackground(vararg url: String?): String{
var text : String
val connection = URL(url[0]).openConnection() as HttpURLConnection
try {
connection.connect()
text = connection.inputStream.use { it.reader().use{reader -> reader.readText()} }
} finally{
connection.disconnect()
}
return text
}
override fun onPostExecute(result: String?) {
super.onPostExecute(result)
handleJson(result)
}
override fun onProgressUpdate(vararg text: String?) {
}
#SuppressLint("WrongViewCast")
private fun handleJson (jsonString: String?) {
val jsonObj = JSONObject(jsonString)
val result = jsonObj.getJSONObject("result")
val response = result.getJSONObject("respe")
val airport = response.getJSONObject("airport")
val pluginData = airport.getJSONObject("Data")
val schedule = pluginData.getJSONObject("schedule")
val arrivals = schedule.getJSONObject("arrivals")
// val data = arrivals.getJSONObject("data")
val jsonArray = JSONArray(arrivals.get("data").toString())
val list = ArrayList<FlightShdu>()
var x = 0
while (x < jsonArray.length()) {
val jsonObject = jsonArray.getJSONObject(x)
list.add(
FlightShdu(
jsonObject.getJSONObject("flight").getJSONObject("identification").getJSONObject("number").getString("default"),
jsonObject.getJSONObject("flight").getJSONObject("airline").getString("short"),
jsonObject.getJSONObject("flight").getJSONObject("status").getJSONObject("generic").getJSONObject("status" )
)
)
x++
}
list.forEach(::println)
var adapter = ListAdapteArr(this#MainActivity, list)
flight_arrivel_list.adapter = adapter
}
}
List Aadpter Class
class ListAdapteArr (val context: fragment_Arr, var list: ArrayList<FlightShdu>): BaseAdapter() {
#SuppressLint("ViewHolder", "NewApi")
override fun getView(p0: Int, convertView: View?, parent: ViewGroup?): View {
val view : View = LayoutInflater.from(context,this).inflate(R.layout.arr_list,parent,false)
val list = list[p0]
val code = view.findViewById(R.id.code_id) as AppCompatTextView
view.callsign_id.text=list.Callsign
view.airline_id.text=list.Airline
code.text = list.code
view.setOnClickListener {
val intent = Intent(context, FlightDeatilasArr::class.java)
intent.putExtra("Stauts",list.Stauts!!)
intent.putExtra("Callsign",list.Callsign!!)
intent.putExtra("Airline",list.Airline!!)
context!!.startActivity(intent)
}
}
private fun getDateTime(s: String): String? {
try {
val sdf = SimpleDateFormat("EE, MMM d KK:mm a")
val netDate = Date(s.toLong() * 1000)
return sdf.format(netDate)
} catch (e: Exception) {
return e.toString()
}
}
override fun getItem(p0: Int): Any {
return list [p0]
}
override fun getItemId(p0: Int): Long {
return p0.toLong()
}
override fun getCount(): Int {
return list.size
}
}

Answer 1

According to documentation, there is method with single parameter LayoutInflater.html#from(android.content.Context), but you invoke it with 2 parameters
LayoutInflater.from(context,this).inflate(R.layout.arr_list,parent,false)
And by the way, context that you pass is not actually Context, but a fragment
class ListAdapteArr (val context: fragment_Arr, ...)
To fix your problem use next approach
override fun getView(p0: Int, convertView: View?, parent: ViewGroup?): View? {
val view: View = LayoutInflater.from(parent!!.context).inflate(R.layout.arr_list,parent,false)
...
return view
}
According to documentation, parent should never be null.
The parent that this view will eventually be attached to