Display Search Result - English

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• STsearchapp closing restart again

  MainActivity.kt---------------package com.example.stsearchimport 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", "Marathi", "Tamil")        fossVsLanguage.put("Cpp", availableLanguagesForFoss)        availableLanguagesForFoss = arrayListOf("English", "Hindi")        fossVsLanguage.put("Python", availableLanguagesForFoss)        availableLanguagesForFoss = arrayListOf("English")        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.stsearchimport androidx.appcompat.app.AppCompatActivityimport android.os.Bundleimport android.widget.Toastimport androidx.recyclerview.widget.LinearLayoutManagerimport androidx.recyclerview.widget.RecyclerViewimport com.android.volley.Requestimport com.android.volley.Request.*import 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>()    lateinit var myAdapter: MyAdapter    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        var myRecyclerView = findViewById<RecyclerView>(R.id.videos_recyclerview)        myAdapter = MyAdapter(applicationContext, finalResultsArrayList)        myRecyclerView.layoutManager = LinearLayoutManager(this)        myRecyclerView.setHasFixedSize(true)        myRecyclerView.adapter = myAdapter        val queue = Volley.newRequestQueue(this)        val url = "https://spoken-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) }        myAdapter.notifyDataSetChanged()    }}------------------------------------------------------------------------------------------ThirdActivity.kt----------------package com.example.stsearchimport androidx.appcompat.app.AppCompatActivityimport android.os.Bundleimport android.widget.Toastclass ThirdActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.activity_third)        var selectedVideoID = intent.getStringExtra("VIDEO_ID")        var selectedVideoTitle =            intent.getStringExtra("VIDEO_TITLE")        Toast.makeText(applicationContext,""+ selectedVideoTitle,            Toast.LENGTH_SHORT).show()    }}------------------------------------------------------------------------------------------------MyAdapter.kt-------------package com.example.stsearchimport android.content.Contextimport android.content.Intentimport android.view.LayoutInflaterimport android.view.Viewimport android.view.ViewGroupimport androidx.recyclerview.widget.RecyclerViewimport com.squareup.picasso.Picassoimport kotlinx.android.synthetic.main.my_customlayout.view.*class MyAdapter    (val mContext : Context, val videoList : ArrayList<VideoItem>) :    RecyclerView.Adapter<MyAdapter.MyViewHolder>(){    class MyViewHolder(itemView : View) : RecyclerView.ViewHolder(itemView)    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {        val layoutInflator = LayoutInflater.from(parent.context)        val videoItem = layoutInflator.inflate(R.layout.my_customlayout, parent, false)        return MyViewHolder(videoItem)    }    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {        var singleVideoItem = videoList.get(position)        holder.itemView.video_title.text = singleVideoItem.videoTitle        holder.itemView.video_level.text = "Level : " + singleVideoItem.videoLevel        Picasso.with(mContext)            .load("https://i.ytimg.com/vi/"+singleVideoItem.videoId+"/sddefault.jpg")            .resize(640,360)//640x360   *initially 320x180            .centerCrop()            .into(holder.itemView.video_thumbnail)        holder.itemView.itemLinearLayout.setOnClickListener{            var playVideoIntent = Intent(mContext, ThirdActivity::class.java).apply {                putExtra("VIDEO_ID",""+singleVideoItem.videoId)                putExtra("VIDEO_TITLE",""+singleVideoItem.videoTitle)                addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)            }            mContext.startActivity(playVideoIntent)        }    }    override fun getItemCount(): Int {        return videoList.size    }}--------------------------------------------------------------------------------------------Run Log file------------Run logfile-----------06/23 06:33:33: Launching app$ adb push /home/rsenthilkumar/STsearch/app/build/outputs/apk/debug/app-debug.apk /data/local/tmp/com.example.stsearch$ adb shell pm install -t -r "/data/local/tmp/com.example.stsearch"SuccessAPK installed in 18 s 61 ms$ adb shell am start -n "com.example.stsearch/com.example.stsearch.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHERClient not ready yet..Waiting for process to come onlineConnected to process 26355 on device lge-lm_x210-LMX210bcbfde07Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter androidx.vectordrawable.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.DrawableW/art: Before Android 4.1, method int androidx.appcompat.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListViewI/Adreno-EGL: <qeglDrvAPI_eglInitialize:379>: EGL 1.4 QUALCOMM build: Nondeterministic_AU_msm8909_LA.BR.1.2.9_RB1__release_AU (I09d312ff84)    OpenGL ES Shader Compiler Version: E031.31.00.01    Build Date: 09/25/17 Mon    Local Branch:     Remote Branch: quic/LA.BR.1.2.9_rb1.26    Local Patches: NONE    Reconstruct Branch: NOTHINGI/OpenGLRenderer: Initialized EGL, version 1.4D/OpenGLRenderer: Swap behavior 1I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@d0a84c0 time:2076235D/ViewRootImpl: Need to measure again cause of requestLayout called between measure and layoutI/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@d0a84c0 time:2112300I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWNI/ViewRootImpl: ViewRoot's Touch Event : ACTION_UPI/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWNI/ViewRootImpl: ViewRoot's Touch Event : ACTION_UPI/AudioManagerEx: AudioManagerEx createdD/OpenGLRenderer: endAllActiveAnimators on 0x95ed6000 (DropDownListView) with handle 0xaad99c70I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWNI/ViewRootImpl: ViewRoot's Touch Event : ACTION_UPI/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWNI/ViewRootImpl: ViewRoot's Touch Event : ACTION_UPD/OpenGLRenderer: endAllActiveAnimators on 0x95ed9800 (DropDownListView) with handle 0xab629cc0I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWNI/ViewRootImpl: ViewRoot's Touch Event : ACTION_UPI/AudioManagerEx: AudioManagerEx createdI/Timeline: Timeline: Activity_launch_request id:com.example.stsearch time:2117599D/AndroidRuntime: Shutting down VME/AndroidRuntime: FATAL EXCEPTION: main    Process: com.example.stsearch, PID: 26355    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.stsearch/com.example.stsearch.Main2Activity}: java.lang.IllegalStateException: myRecyclerView must not be null        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2763)        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2824)        at android.app.ActivityThread.-wrap12(ActivityThread.java)        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1546)        at android.os.Handler.dispatchMessage(Handler.java:102)        at android.os.Looper.loop(Looper.java:154)        at android.app.ActivityThread.main(ActivityThread.java:6351)        at java.lang.reflect.Method.invoke(Native Method)        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:896)        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:786)     Caused by: java.lang.IllegalStateException: myRecyclerView must not be null        at com.example.stsearch.Main2Activity.onCreate(Main2Activity.kt:33)        at android.app.Activity.performCreate(Activity.java:6775)        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2716)        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2824)         at android.app.ActivityThread.-wrap12(ActivityThread.java)         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1546)         at android.os.Handler.dispatchMessage(Handler.java:102)         at android.os.Looper.loop(Looper.java:154)         at android.app.ActivityThread.main(ActivityThread.java:6351)         at java.lang.reflect.Method.invoke(Native Method)         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:896)         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:786) Application terminated.

  13-14M 50-60S Rsenthil_1976
  
  
  Answer last updated on: June 29, 2021, 1:45 p.m.

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• Unable to import version7(v7)Widget

  I'm getting an error while importing the package (android.support.v7.widget.RecyclerView).What do I do? 

  07-08M 30-40S raunaqjoseph@gmail.com
  
  
  Answer last updated on: May 21, 2021, 7:48 p.m.

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