URL Request - English

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• Unable to connect to the server error

  My code is:MainActvity.kt-------------------package com.example.irttsearchappimport android.content.Intentimport androidx.appcompat.app.AppCompatActivityimport android.os.Bundleimport android.view.Viewimport android.widget.AdapterViewimport android.widget.ArrayAdapterimport android.widget.Spinnerimport android.widget.Toastimport kotlinx.android.synthetic.main.activity_main.*class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) var fossVsFossID = HashMap<String, Int>() fossVsFossID.put("Java",10) fossVsFossID.put("Cpp",57) fossVsFossID.put("Python",26) fossVsFossID.put("RDBMS",92) var languageVsLanguageID = HashMap<String,Int>() languageVsLanguageID.put("English",22) languageVsLanguageID.put("Hindi",6) languageVsLanguageID.put("Gujarati",5) languageVsLanguageID.put("Tamil",18) languageVsLanguageID.put("Marathi",12) languageVsLanguageID.put("Kannada",7) var fossVsLanguage = HashMap<String, ArrayList<String>>() var availablelanguagesforFoss: ArrayList<String> availablelanguagesforFoss = arrayListOf("English","Gujarati","Hindi","Kannada") fossVsLanguage.put("Java",availablelanguagesforFoss) availablelanguagesforFoss = arrayListOf("English","Gujarati","Hindi","Kannada") fossVsLanguage.put("Cpp",availablelanguagesforFoss) availablelanguagesforFoss = arrayListOf("English","Gujarati","Hindi","Kannada") fossVsLanguage.put("Python",availablelanguagesforFoss) availablelanguagesforFoss = arrayListOf("English","Gujarati","Hindi","Kannada") fossVsLanguage.put("RDBMS",availablelanguagesforFoss) var fossSpinner = findViewById<Spinner>(R.id.Spinner1) var languageSpinner = findViewById<Spinner>(R.id.Spinner2) var fossOptions = fossVsFossID.keys.toList() var languageOptions = languageVsLanguageID.keys.toMutableList() var selectedFoss = "none" var selectedLanguage = "none" var fossAdapter = ArrayAdapter<String>(applicationContext,android.R.layout.simple_list_item_activated_1,fossOptions) fossSpinner.adapter = fossAdapter var languageAdapter = ArrayAdapter<String>(applicationContext,android.R.layout.simple_list_item_activated_1,languageOptions) languageSpinner.adapter = languageAdapter fossSpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener { override fun onNothingSelected(parent: AdapterView<*>?) { } override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) { languageOptions.clear() selectedFoss = fossOptions.get(position) languageOptions.addAll(ArrayList(fossVsLanguage.get(selectedFoss)!!)) languageAdapter.notifyDataSetChanged() } } languageSpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener { override fun onNothingSelected(parent: AdapterView<*>?) { } override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) { selectedLanguage = languageOptions.get(position) } } searchButton.setOnClickListener { if (selectedFoss == "none" || selectedLanguage == "none") { Toast.makeText(this, "Please select FOSS and Language both", Toast.LENGTH_SHORT).show() } else { var fossID = fossVsFossID.get(selectedFoss) var languageID = languageVsLanguageID.get(selectedLanguage) var searchIntent = Intent(this, Main2Activity::class.java).apply { putExtra("fossID", "" + fossID) putExtra("languageID", "" + languageID) } startActivity(searchIntent) } } }}---------------------Main2Activity.kt----------------package com.example.irttsearchappimport androidx.appcompat.app.AppCompatActivityimport android.os.Bundleimport android.widget.Toastimport com.android.volley.Requestimport com.android.volley.Responseimport com.android.volley.toolbox.StringRequestimport com.android.volley.toolbox.Volleyimport kotlinx.android.synthetic.main.activity_main2.*import org.json.JSONArrayimport org.json.JSONObjectclass Main2Activity : AppCompatActivity() { var finalResultsArrayList= ArrayList<VideoItem>() override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main2) var foss = intent.getStringExtra("fossID") var language = intent.getStringExtra("languageID") selectedOption.text = "Foss ID : " + foss + "\nLanguage ID : " + language val queue = Volley.newRequestQueue(this) val url = "https://spoke-tutorial.org/api/get_tutorials/"+foss+"/"+language val stringRequest = StringRequest(Request.Method.GET,url, Response.Listener<String> {response -> Toast.makeText(applicationContext,"Received server response!", Toast.LENGTH_SHORT).show() extractJsonData(response) }, Response.ErrorListener { Toast.makeText(applicationContext, "Unable to connect to the server", Toast.LENGTH_SHORT).show() }) Toast.makeText(applicationContext, "Contacting Server...", Toast.LENGTH_SHORT).show() queue.add(stringRequest) } private fun extractJsonData(jsonResponse: String) { var videosDataArray = JSONArray(jsonResponse) var singleVideoJsonObject: JSONObject var singleVideoItem: VideoItem var i = 0 var size = videosDataArray.length() while (i < size) { singleVideoJsonObject = videosDataArray.getJSONObject(i) singleVideoItem = VideoItem(singleVideoJsonObject.getString("video_id"),singleVideoJsonObject.getString("tutorial_name"),singleVideoJsonObject.getString("tutorial_level")) finalResultsArrayList.add(singleVideoItem) i++ } println("The parsed videoItems are :") finalResultsArrayList.forEach { println(it) } }}--------------------------VideoItem.kt------------package com.example.irttsearchappdata class VideoItem(val videoId : String, val videoTitle: String, val videoLevel: String)

  07-08M 40-50S Rsenthil_1976
  
  
  Answer last updated on: June 21, 2021, 3:27 p.m.

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