Why does the ScrollView detect multiple direct childs?

So I’m trying to retrieve a lost of data from my firebase and then implement some basic crud so that i can barely pass this paper, but i got stuck with this error for a few days already, here are the source codes that I’m using

activity_admin_main.xml: this is the UI for the functions, i have yet to add the buttons for the crud methods mentioned before, and this is only an attempt to list the documents in a firebase collection called “course”

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<code><?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"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/appbackground"
android:paddingTop="?attr/actionBarSize">
<ImageView
android:id="@+id/imageView2"
android:layout_width="45dp"
android:layout_height="43dp"
android:layout_marginTop="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.056"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/appicon" />
<TextView
android:id="@+id/tvName"
android:layout_width="220dp"
android:layout_height="40dp"
android:layout_marginTop="16dp"
android:background="@color/edit_text_background"
android:fontFamily="@font/aldrich"
android:text="tvName"
android:textAlignment="center"
android:textSize="30sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.109"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView2" />
<TextView
android:id="@+id/tvEmail"
android:layout_width="330sp"
android:layout_height="30sp"
android:layout_marginTop="20dp"
android:background="@color/edit_text_background"
android:fontFamily="@font/aldrich"
android:text="TextView"
android:textAlignment="center"
android:textSize="22sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.259"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvName" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/nav_view"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:background="@color/button_background_color"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="@menu/bottom_nav_menu" />
<fragment
android:id="@+id/nav_host_fragment_activity_admin_main"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:layout_constraintBottom_toTopOf="@id/nav_view"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="@navigation/mobile_navigation" />
</androidx.constraintlayout.widget.ConstraintLayout>
</code>
<code><?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" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/appbackground" android:paddingTop="?attr/actionBarSize"> <ImageView android:id="@+id/imageView2" android:layout_width="45dp" android:layout_height="43dp" android:layout_marginTop="16dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.056" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:srcCompat="@drawable/appicon" /> <TextView android:id="@+id/tvName" android:layout_width="220dp" android:layout_height="40dp" android:layout_marginTop="16dp" android:background="@color/edit_text_background" android:fontFamily="@font/aldrich" android:text="tvName" android:textAlignment="center" android:textSize="30sp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.109" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/imageView2" /> <TextView android:id="@+id/tvEmail" android:layout_width="330sp" android:layout_height="30sp" android:layout_marginTop="20dp" android:background="@color/edit_text_background" android:fontFamily="@font/aldrich" android:text="TextView" android:textAlignment="center" android:textSize="22sp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.259" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/tvName" /> <com.google.android.material.bottomnavigation.BottomNavigationView android:id="@+id/nav_view" android:layout_width="0dp" android:layout_height="wrap_content" android:background="@color/button_background_color" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:menu="@menu/bottom_nav_menu" /> <fragment android:id="@+id/nav_host_fragment_activity_admin_main" android:name="androidx.navigation.fragment.NavHostFragment" android:layout_width="match_parent" android:layout_height="match_parent" app:defaultNavHost="true" app:layout_constraintBottom_toTopOf="@id/nav_view" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:navGraph="@navigation/mobile_navigation" /> </androidx.constraintlayout.widget.ConstraintLayout> </code>
<?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"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/appbackground"
    android:paddingTop="?attr/actionBarSize">

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="45dp"
        android:layout_height="43dp"
        android:layout_marginTop="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.056"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/appicon" />

    <TextView
        android:id="@+id/tvName"
        android:layout_width="220dp"
        android:layout_height="40dp"
        android:layout_marginTop="16dp"
        android:background="@color/edit_text_background"
        android:fontFamily="@font/aldrich"
        android:text="tvName"
        android:textAlignment="center"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.109"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView2" />

    <TextView
        android:id="@+id/tvEmail"
        android:layout_width="330sp"
        android:layout_height="30sp"
        android:layout_marginTop="20dp"
        android:background="@color/edit_text_background"
        android:fontFamily="@font/aldrich"
        android:text="TextView"
        android:textAlignment="center"
        android:textSize="22sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.259"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tvName" />

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/nav_view"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:background="@color/button_background_color"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:menu="@menu/bottom_nav_menu" />

    <fragment
        android:id="@+id/nav_host_fragment_activity_admin_main"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@id/nav_view"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/mobile_navigation" />

</androidx.constraintlayout.widget.ConstraintLayout>

fragment_course.xml: this is the xml of the code with a problem, there are two other fragment xmls, but those are still empty for now, and share similar crud functions, so i could just modify the complete code that does function well

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<code><?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"
tools:context=".ui.courses.CourseFragment">
<ScrollView
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription=" ">
<LinearLayout
android:id="@+id/containerLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!-- TextViews dynamically added here -->
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
</code>
<code><?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" tools:context=".ui.courses.CourseFragment"> <ScrollView android:id="@+id/scrollView" android:layout_width="match_parent" android:layout_height="match_parent" android:contentDescription=" "> <LinearLayout android:id="@+id/containerLayout" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <!-- TextViews dynamically added here --> </LinearLayout> </ScrollView> </androidx.constraintlayout.widget.ConstraintLayout> </code>
<?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"
    tools:context=".ui.courses.CourseFragment">

    <ScrollView
        android:id="@+id/scrollView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:contentDescription=" ">

        <LinearLayout
            android:id="@+id/containerLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <!-- TextViews dynamically added here -->
        </LinearLayout>

    </ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>

AdminMain.kt: this is the kotlin file for the whole navigation view, and the function i used to retrieve the name value from my firestore, not much to see here… I think

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<code>package com.example.assignment
import android.os.Bundle
import android.util.Log
import android.widget.TextView
import com.google.android.material.bottomnavigation.BottomNavigationView
import androidx.appcompat.app.AppCompatActivity
import androidx.navigation.findNavController
import androidx.navigation.ui.AppBarConfiguration
import androidx.navigation.ui.setupActionBarWithNavController
import androidx.navigation.ui.setupWithNavController
import com.example.assignment.databinding.ActivityAdminMainBinding
import com.google.firebase.firestore.ktx.firestore
import com.google.firebase.ktx.Firebase
class AdminMain : AppCompatActivity() {
private lateinit var binding: ActivityAdminMainBinding
lateinit var tvNameObj: TextView
lateinit var tvEmailObj: TextView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityAdminMainBinding.inflate(layoutInflater)
setContentView(binding.root)
val db = Firebase.firestore
tvNameObj = findViewById(R.id.tvName)
tvEmailObj = findViewById(R.id.tvEmail)
val navView: BottomNavigationView = binding.navView
val navController = findNavController(R.id.nav_host_fragment_activity_admin_main)
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
val appBarConfiguration = AppBarConfiguration(
setOf(
R.id.navigation_course, R.id.navigation_dashboard, R.id.navigation_notifications
)
)
setupActionBarWithNavController(navController, appBarConfiguration)
navView.setupWithNavController(navController)
var name = ""
val email = intent.getStringExtra("email")
if (email != null) {
db.collection("admin")
.whereEqualTo("email", email)
.get()
.addOnSuccessListener { documents ->
if (!documents.isEmpty) {
val document = documents.documents[0]
name = document.getString("name").toString()
if (name != "") {
tvNameObj.text = name
tvEmailObj.text = email
Log.i("Successful", "Name retrieved successfully")
}
} else {
// Handle case where no document is found
Log.w("Not found", "Name not found")
}
}
.addOnFailureListener { exception ->
// Handle any errors here
Log.wtf("WTF", "What The Fxxk happened!?", exception)
}
}
}
}
</code>
<code>package com.example.assignment import android.os.Bundle import android.util.Log import android.widget.TextView import com.google.android.material.bottomnavigation.BottomNavigationView import androidx.appcompat.app.AppCompatActivity import androidx.navigation.findNavController import androidx.navigation.ui.AppBarConfiguration import androidx.navigation.ui.setupActionBarWithNavController import androidx.navigation.ui.setupWithNavController import com.example.assignment.databinding.ActivityAdminMainBinding import com.google.firebase.firestore.ktx.firestore import com.google.firebase.ktx.Firebase class AdminMain : AppCompatActivity() { private lateinit var binding: ActivityAdminMainBinding lateinit var tvNameObj: TextView lateinit var tvEmailObj: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = ActivityAdminMainBinding.inflate(layoutInflater) setContentView(binding.root) val db = Firebase.firestore tvNameObj = findViewById(R.id.tvName) tvEmailObj = findViewById(R.id.tvEmail) val navView: BottomNavigationView = binding.navView val navController = findNavController(R.id.nav_host_fragment_activity_admin_main) // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. val appBarConfiguration = AppBarConfiguration( setOf( R.id.navigation_course, R.id.navigation_dashboard, R.id.navigation_notifications ) ) setupActionBarWithNavController(navController, appBarConfiguration) navView.setupWithNavController(navController) var name = "" val email = intent.getStringExtra("email") if (email != null) { db.collection("admin") .whereEqualTo("email", email) .get() .addOnSuccessListener { documents -> if (!documents.isEmpty) { val document = documents.documents[0] name = document.getString("name").toString() if (name != "") { tvNameObj.text = name tvEmailObj.text = email Log.i("Successful", "Name retrieved successfully") } } else { // Handle case where no document is found Log.w("Not found", "Name not found") } } .addOnFailureListener { exception -> // Handle any errors here Log.wtf("WTF", "What The Fxxk happened!?", exception) } } } } </code>
package com.example.assignment

import android.os.Bundle
import android.util.Log
import android.widget.TextView
import com.google.android.material.bottomnavigation.BottomNavigationView
import androidx.appcompat.app.AppCompatActivity
import androidx.navigation.findNavController
import androidx.navigation.ui.AppBarConfiguration
import androidx.navigation.ui.setupActionBarWithNavController
import androidx.navigation.ui.setupWithNavController
import com.example.assignment.databinding.ActivityAdminMainBinding
import com.google.firebase.firestore.ktx.firestore
import com.google.firebase.ktx.Firebase

class AdminMain : AppCompatActivity() {

    private lateinit var binding: ActivityAdminMainBinding
    lateinit var tvNameObj: TextView
    lateinit var tvEmailObj: TextView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivityAdminMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        val db = Firebase.firestore
        tvNameObj = findViewById(R.id.tvName)
        tvEmailObj = findViewById(R.id.tvEmail)

        val navView: BottomNavigationView = binding.navView

        val navController = findNavController(R.id.nav_host_fragment_activity_admin_main)
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        val appBarConfiguration = AppBarConfiguration(
            setOf(
                R.id.navigation_course, R.id.navigation_dashboard, R.id.navigation_notifications
            )
        )
        setupActionBarWithNavController(navController, appBarConfiguration)
        navView.setupWithNavController(navController)

        var name = ""
        val email = intent.getStringExtra("email")
        if (email != null) {
            db.collection("admin")
                .whereEqualTo("email", email)
                .get()
                .addOnSuccessListener { documents ->
                    if (!documents.isEmpty) {
                        val document = documents.documents[0]
                        name = document.getString("name").toString()
                        if (name != "") {
                            tvNameObj.text = name
                            tvEmailObj.text = email
                            Log.i("Successful", "Name retrieved successfully")
                        }
                    } else {
                        // Handle case where no document is found
                        Log.w("Not found", "Name not found")
                    }
                }
                .addOnFailureListener { exception ->
                    // Handle any errors here
                    Log.wtf("WTF", "What The Fxxk happened!?", exception)
                }
        }
    }
}

And finally, CourseFragment.kt, this is where the problem occured, for now im only attempting to retrieve and display the data from firebase and store them in textViews that will be stored in a linear layout, then store the linear layou in the scrollView so that it only contain one direct child.

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<code>package com.example.assignment.ui.courses
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import android.widget.ScrollView
import android.widget.TextView
import androidx.fragment.app.Fragment
import androidx.lifecycle.ViewModelProvider
import com.example.assignment.databinding.FragmentCourseBinding
import com.google.firebase.firestore.ktx.firestore
import com.google.firebase.ktx.Firebase
class CourseFragment : Fragment() {
private var _binding: FragmentCourseBinding? = null
// This property is only valid between onCreateView and
// onDestroyView.
private val binding get() = _binding!!
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
val courseViewModel =
ViewModelProvider(this).get(CourseViewModel::class.java)
_binding = FragmentCourseBinding.inflate(inflater, container, false)
val root: View = binding.root
val scrollView: ScrollView = binding.scrollView
val linearLayout: LinearLayout = LinearLayout(context)
linearLayout.orientation = LinearLayout.VERTICAL
// Fetch data from Firestore
val db = Firebase.firestore
db.collection("course")
.get()
.addOnSuccessListener { documents ->
for (document in documents) {
// Create a TextView for each document
val textView = TextView(context)
textView.text = document.data.toString()
// Add the TextView to the LinearLayout
linearLayout.addView(textView)
}
// Add the LinearLayout to the ScrollView
scrollView.addView(linearLayout)
}
.addOnFailureListener { exception ->
Log.w("Not Found", "Error getting documents: ", exception)
}
return root
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
}
</code>
<code>package com.example.assignment.ui.courses import android.os.Bundle import android.util.Log import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.LinearLayout import android.widget.ScrollView import android.widget.TextView import androidx.fragment.app.Fragment import androidx.lifecycle.ViewModelProvider import com.example.assignment.databinding.FragmentCourseBinding import com.google.firebase.firestore.ktx.firestore import com.google.firebase.ktx.Firebase class CourseFragment : Fragment() { private var _binding: FragmentCourseBinding? = null // This property is only valid between onCreateView and // onDestroyView. private val binding get() = _binding!! override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View { val courseViewModel = ViewModelProvider(this).get(CourseViewModel::class.java) _binding = FragmentCourseBinding.inflate(inflater, container, false) val root: View = binding.root val scrollView: ScrollView = binding.scrollView val linearLayout: LinearLayout = LinearLayout(context) linearLayout.orientation = LinearLayout.VERTICAL // Fetch data from Firestore val db = Firebase.firestore db.collection("course") .get() .addOnSuccessListener { documents -> for (document in documents) { // Create a TextView for each document val textView = TextView(context) textView.text = document.data.toString() // Add the TextView to the LinearLayout linearLayout.addView(textView) } // Add the LinearLayout to the ScrollView scrollView.addView(linearLayout) } .addOnFailureListener { exception -> Log.w("Not Found", "Error getting documents: ", exception) } return root } override fun onDestroyView() { super.onDestroyView() _binding = null } } </code>
package com.example.assignment.ui.courses

import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import android.widget.ScrollView
import android.widget.TextView
import androidx.fragment.app.Fragment
import androidx.lifecycle.ViewModelProvider
import com.example.assignment.databinding.FragmentCourseBinding
import com.google.firebase.firestore.ktx.firestore
import com.google.firebase.ktx.Firebase

class CourseFragment : Fragment() {

    private var _binding: FragmentCourseBinding? = null

    // This property is only valid between onCreateView and
    // onDestroyView.
    private val binding get() = _binding!!

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        val courseViewModel =
            ViewModelProvider(this).get(CourseViewModel::class.java)

        _binding = FragmentCourseBinding.inflate(inflater, container, false)
        val root: View = binding.root

        val scrollView: ScrollView = binding.scrollView
        val linearLayout: LinearLayout = LinearLayout(context)
        linearLayout.orientation = LinearLayout.VERTICAL

        // Fetch data from Firestore
        val db = Firebase.firestore
        db.collection("course")
            .get()
            .addOnSuccessListener { documents ->
                for (document in documents) {
                    // Create a TextView for each document
                    val textView = TextView(context)
                    textView.text = document.data.toString()

                    // Add the TextView to the LinearLayout
                    linearLayout.addView(textView)
                }
                // Add the LinearLayout to the ScrollView
                scrollView.addView(linearLayout)
            }
            .addOnFailureListener { exception ->
                Log.w("Not Found", "Error getting documents: ", exception)
            }

        return root
    }

    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }
}

So my problem is that AndroidStudio keeps returning this error about having more than 1 child, and I have tried moving scrollView.addView(linearLayout) to other lines but still to no avail, asked chatGPT too, and it doesn’t seem to even understand my question so here I am, asking y’all to see if there’s a problem that I missed

and here’s the fatal error message if it helps

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<code>FATAL EXCEPTION: main
Process: com.example.assignment, PID: 21660
java.lang.IllegalStateException: ScrollView can host only one direct child
at android.widget.ScrollView.addView(ScrollView.java:261)
at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:54)
at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:44)
at com.example.assignment.ui.courses.CourseFragment.onCreateView$lambda$0(CourseFragment.kt:44)
at com.example.assignment.ui.courses.CourseFragment.$r8$lambda$k4oKZ0mPYZVACvyeiTV-bMatA7Q(Unknown Source:0)
at com.example.assignment.ui.courses.CourseFragment$$ExternalSyntheticLambda0.onSuccess(Unknown Source:2)
at com.google.android.gms.tasks.zzm.run(com.google.android.gms:play-services-tasks@@18.1.0:1)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
</code>
<code>FATAL EXCEPTION: main Process: com.example.assignment, PID: 21660 java.lang.IllegalStateException: ScrollView can host only one direct child at android.widget.ScrollView.addView(ScrollView.java:261) at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:54) at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:44) at com.example.assignment.ui.courses.CourseFragment.onCreateView$lambda$0(CourseFragment.kt:44) at com.example.assignment.ui.courses.CourseFragment.$r8$lambda$k4oKZ0mPYZVACvyeiTV-bMatA7Q(Unknown Source:0) at com.example.assignment.ui.courses.CourseFragment$$ExternalSyntheticLambda0.onSuccess(Unknown Source:2) at com.google.android.gms.tasks.zzm.run(com.google.android.gms:play-services-tasks@@18.1.0:1) at android.os.Handler.handleCallback(Handler.java:790) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6494) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) </code>
FATAL EXCEPTION: main
Process: com.example.assignment, PID: 21660
java.lang.IllegalStateException: ScrollView can host only one direct child
at android.widget.ScrollView.addView(ScrollView.java:261)
at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:54)
at com.example.assignment.ui.courses.CourseFragment$onCreateView$1.invoke(CourseFragment.kt:44)
at com.example.assignment.ui.courses.CourseFragment.onCreateView$lambda$0(CourseFragment.kt:44)
at com.example.assignment.ui.courses.CourseFragment.$r8$lambda$k4oKZ0mPYZVACvyeiTV-bMatA7Q(Unknown Source:0)
at com.example.assignment.ui.courses.CourseFragment$$ExternalSyntheticLambda0.onSuccess(Unknown Source:2)
at com.google.android.gms.tasks.zzm.run(com.google.android.gms:play-services-tasks@@18.1.0:1)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

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