Cfrgtkky

I have a program that will show some data to a fragment with a recyclerview and using json file for the data, i have tried this before and it's working properly, but when i use a bottom navigation, i meet this exception

java.lang.RuntimeException: Unable to start activity ComponentInfo{smktelkom.student.profil/smktelkom.student.profil.MainActivity}: android.view.InflateException: Binary XML file line #10: Error inflating class fragment

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)

    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)

    at android.app.ActivityThread.access$800(ActivityThread.java:151)

    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)

    at android.os.Handler.dispatchMessage(Handler.java:102)

    at android.os.Looper.loop(Looper.java:135)

    at android.app.ActivityThread.main(ActivityThread.java:5254)

    at java.lang.reflect.Method.invoke(Native Method)

    at java.lang.reflect.Method.invoke(Method.java:372)

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)

 Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class fragment

    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)

    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)

    at android.view.LayoutInflater.inflate(LayoutInflater.java:504)

    at android.view.LayoutInflater.inflate(LayoutInflater.java:414)

    at android.view.LayoutInflater.inflate(LayoutInflater.java:365)

    at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)

    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)

    at smktelkom.student.profil.MainActivity.onCreate(MainActivity.kt:13)

    at android.app.Activity.performCreate(Activity.java:5990)

    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)

    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 

    at android.app.ActivityThread.access$800(ActivityThread.java:151) 

    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 

    at android.os.Handler.dispatchMessage(Handler.java:102) 

    at android.os.Looper.loop(Looper.java:135) 

    at android.app.ActivityThread.main(ActivityThread.java:5254) 

    at java.lang.reflect.Method.invoke(Native Method) 

    at java.lang.reflect.Method.invoke(Method.java:372) 

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 

 Caused by: java.lang.RuntimeException: Exception inflating smktelkom.student.profil:navigation/navigasinya line 41

    at androidx.navigation.NavInflater.inflate(NavInflater.java:131)

    at androidx.navigation.NavController.setGraph(NavController.java:419)

    at androidx.navigation.fragment.NavHostFragment.onCreate(NavHostFragment.java:221)

    at android.support.v4.app.Fragment.performCreate(Fragment.java:2331)

    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1386)

    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1659)

    at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1905)

    at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3715)

    at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:114)

    at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:374)

    at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)

    at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:68)

    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)

    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 

    at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 

    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 

    at smktelkom.student.profil.MainActivity.onCreate(MainActivity.kt:13) 

    at android.app.Activity.performCreate(Activity.java:5990) 

    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) 

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) 

    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 

    at android.app.ActivityThread.access$800(ActivityThread.java:151) 

    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 

    at android.os.Handler.dispatchMessage(Handler.java:102) 

    at android.os.Looper.loop(Looper.java:135) 

    at android.app.ActivityThread.main(ActivityThread.java:5254) 

    at java.lang.reflect.Method.invoke(Native Method) 

    at java.lang.reflect.Method.invoke(Method.java:372) 

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 

 Caused by: java.lang.IllegalArgumentException: smktelkom.student.profil.More.MoreFragment must be a subclass of class android.support.v4.app.Fragment

    at androidx.navigation.NavDestination.parseClassFromName(NavDestination.java:111)

    at androidx.navigation.fragment.FragmentNavigator$Destination.onInflate(FragmentNavigator.java:310)

    at androidx.navigation.NavInflater.inflate(NavInflater.java:143)

    at androidx.navigation.NavInflater.inflate(NavInflater.java:172)

    at androidx.navigation.NavInflater.inflate(NavInflater.java:122)

    at androidx.navigation.NavController.setGraph(NavController.java:419) 

    at androidx.navigation.fragment.NavHostFragment.onCreate(NavHostFragment.java:221) 

    at android.support.v4.app.Fragment.performCreate(Fragment.java:2331) 

    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1386) 

    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1659) 

    at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1905) 

    at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3715) 

    at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:114) 

    at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:374) 

    at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39) 

    at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:68) 

    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733) 

    at android.view.LayoutInflater.rInflate(LayoutInflater.java:806) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:504) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:414) 

    at android.view.LayoutInflater.inflate(LayoutInflater.java:365) 

    at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 

    at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 

    at smktelkom.student.profil.MainActivity.onCreate(MainActivity.kt:13) 

    at android.app.Activity.performCreate(Activity.java:5990) 

    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) 

    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) 

    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 

    at android.app.ActivityThread.access$800(ActivityThread.java:151) 

    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 

    at android.os.Handler.dispatchMessage(Handler.java:102) 

    at android.os.Looper.loop(Looper.java:135) 

    at android.app.ActivityThread.main(ActivityThread.java:5254) 

    at java.lang.reflect.Method.invoke(Native Method) 

    at java.lang.reflect.Method.invoke(Method.java:372) 

    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 

    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 

and this is my class file and navigation file in case you need it

package smktelkom.student.profil



import android.os.Bundle

import android.support.v7.app.AppCompatActivity

import androidx.navigation.Navigation

import androidx.navigation.ui.NavigationUI.onNavDestinationSelected

import kotlinx.android.synthetic.main.activity_main.*



class MainActivity : AppCompatActivity() {



override fun onCreate(savedInstanceState: Bundle?) {

    super.onCreate(savedInstanceState)

    setContentView(R.layout.activity_main)



    // navigation_bottom.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)



    navigation_bottom.setOnNavigationItemSelectedListener { item ->



        onNavDestinationSelected(item, Navigation.findNavController(this, R.id.my_nav_host_fragment))



    }





}

}

yeah this MainActivity is just this nothing else and the exception is linking to this class and i can't find the problem

this is the navigation file

<?xml version="1.0" encoding="utf-8"?>

<navigation 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:id="@+id/navigasinya"

    app:startDestination="@id/navigation_profil">



    <fragment

        android:id="@+id/navigation_profil"

        android:name="smktelkom.student.profil.Profil.ProfilFragment"

        android:label="@string/title_profil"

        tools:layout="@layout/fragment_profil">

        <action

            android:id="@+id/action_navigation_profil_to_main2Activity"

            app:destination="@id/main2Activity"

            app:enterAnim="@anim/nav_default_pop_enter_anim"

            app:exitAnim="@anim/nav_default_exit_anim"

            app:popEnterAnim="@anim/nav_default_pop_enter_anim"

            app:popExitAnim="@anim/nav_default_pop_exit_anim" />

    </fragment>

    <fragment

        android:id="@+id/navigation_hobi"

        android:name="smktelkom.student.profil.Hobi.HobiFragment"

        android:label="@string/title_hobi"

        tools:layout="@layout/fragment_hobi">

        <action

            android:id="@+id/action_navigation_hobi_to_main3Activity"

            app:destination="@id/main3Activity"

            app:enterAnim="@anim/nav_default_pop_enter_anim" />

    </fragment>

    <fragment

        android:id="@+id/navigation_makanan"

        android:name="smktelkom.student.profil.Makanan.MakananFragment"

        android:label="@string/title_makanan"

        tools:layout="@layout/fragment_makanan">

        <action

            android:id="@+id/action_navigation_makanan_to_main4Activity"

            app:destination="@id/main4Activity"

            app:enterAnim="@anim/nav_default_pop_enter_anim" />

    </fragment>

    <fragment

        android:id="@+id/navigation_more"

        android:name="smktelkom.student.profil.More.MoreFragment"

        android:label="@string/title_more"

        tools:layout="@layout/fragment_more">

        <action

            android:id="@+id/action_navigation_more_to_main5Activity"

            app:destination="@id/main5Activity"

            app:enterAnim="@anim/nav_default_pop_enter_anim" />

    </fragment>

    <activity

        android:id="@+id/main2Activity"

        android:name="smktelkom.student.profil.Main2Activity"

        android:label="activity_main2"

        tools:layout="@layout/activity_main2" />

    <activity

        android:id="@+id/main5Activity"

        android:name="smktelkom.student.profil.Main5Activity"

        android:label="activity_main5"

        tools:layout="@layout/activity_main5" />

    <activity

        android:id="@+id/main3Activity"

        android:name="smktelkom.student.profil.Main3Activity"

        android:label="activity_main3"

        tools:layout="@layout/activity_main3" />

    <activity

        android:id="@+id/main4Activity"

        android:name="smktelkom.student.profil.Main4Activity"

        android:label="activity_main4"

        tools:layout="@layout/activity_main4" />

</navigation>

i have searching another problem that's same like me and their answer is to put the android:name below the id and i've already tried it and still nothing fixed

this is my fragment class

package smktelkom.student.profil.More

import android.annotation.TargetApi

import android.app.Fragment

import android.os.Build



import android.support.v7.app.AppCompatActivity

import android.os.Bundle

import android.support.v7.widget.LinearLayoutManager

import android.util.Log

import android.view.LayoutInflater

import android.view.View

import android.view.ViewGroup



import kotlinx.android.synthetic.main.activity_main.*

import kotlinx.android.synthetic.main.fragment_more.*

import org.json.JSONArray

import org.json.JSONObject

import smktelkom.student.profil.News

import smktelkom.student.profil.NewsAdapter

import smktelkom.student.profil.R

import java.io.InputStream



class MoreFragment : Fragment() {



    private val TAG : String = "News"

    private lateinit var linearLayoutManager:LinearLayoutManager

    private lateinit var mAdapter: NewsAdapter



    @TargetApi(Build.VERSION_CODES.M)

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,

                              savedInstanceState: Bundle?): View? {

        // Inflate the layout for this fragment

        val view = inflater.inflate(R.layout.fragment_more, container, false)

        recyclerView.layoutManager = LinearLayoutManager(context)

        val jsonString:String = readJsonFromKotlinFile()

        val newsList : ArrayList<News> = parseJsonStringToNewsList(jsonString)



        mAdapter = NewsAdapter(newsList)

        recyclerView.adapter = mAdapter

        return view

    }



    private fun parseJsonStringToNewsList(jsonString: String): ArrayList<News> {

        val newsList :ArrayList<News> = ArrayList<News>(0)

        val newsArray = JSONArray(jsonString)

        var i = 0

        var numIterations = newsArray.length()

        while(i < numIterations){

            val newsObject:JSONObject = newsArray.getJSONObject(i)

            val news = News()

            news.news_title = newsObject.getString("news_title")

            news.news_image_url = newsObject.getString("news_image_url")

            news.news_source = newsObject.getString("news_source")

            news.news_detail = newsObject.getString("news_detail")

            news.news_url = newsObject.getString("news_url")

            news.id = newsObject.getInt("id")

            newsList.add(news)

            i++

        }

        return newsList

    }



    private fun readJsonFromKotlinFile(): String {

        var inputString = ""

        try {

            val inputStream:InputStream = activity.assets.open("news_data_file.json")

            inputString = inputStream.bufferedReader().use{it.readText()}

            Log.d(TAG,inputString)

        } catch (e:Exception){

            Log.d(TAG, e.toString())

        }

        return inputString

    }





}

well, i think there's no problem with this class because the exception didn't mention it. Just in case you need it

and this is my fragment XML file

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@color/colorKuning"

    tools:context="smktelkom.student.profil.More.MoreFragment">



    <android.support.v7.widget.RecyclerView

        android:id="@+id/recyclerView"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:scrollbars="vertical"/>

</android.support.constraint.ConstraintLayout>

I've tried to search this problem but there's no question like my problem is.
I hope everyone can help me.

Thank You