Unresolved reference: Layout_ActivityBinding?

Create Mobile App for coursework on Kotlin. I ran into a problem that for some reason I can't nest a fragment in a FragmentContainerView. I couldn't find on the internet how to fix it.

Code in gradle

    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    compileSdk 33

    defaultConfig {
        applicationId "com.example.historicalsaratovnav"
        minSdk 28
        targetSdk 33
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    dataBinding{enabled=true}

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.9.0'
    implementation 'androidx.appcompat:appcompat:1.6.0'
    implementation 'com.google.android.material:material:1.8.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
    implementation 'com.google.android.material:material:1.8.0'
    implementation("androidx.navigation:navigation-fragment-ktx:2.5.3")
    implementation("androidx.navigation:navigation-ui-ktx:2.5.3")
    implementation 'androidx.core:core-splashscreen:1.0.0'
    implementation "androidx.fragment:fragment-ktx:1.6.0-alpha04"
}

Code layout

<androidx.drawerlayout.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".Layout_Activity">

    <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
    >
        <androidx.fragment.app.FragmentContainerView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal"
                android:weightSum="1"
                android:id="@+id/conteiner_fragment"
                app:defaultNavHost="true"
                android:gravity="center"/>
        <com.google.android.material.bottomnavigation.BottomNavigationView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="bottom"
                app:labelVisibilityMode="labeled"
                android:background="@color/white"
                app:menu="@menu/menu"
                android:id="@+id/bottom_navigation_view"
        >
        </com.google.android.material.bottomnavigation.BottomNavigationView>

    </FrameLayout>

</androidx.drawerlayout.widget.DrawerLayout>

Code file KT

import android.content.Context
import android.os.Binder
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.AttributeSet
import android.view.View


class Layout_Activity : AppCompatActivity() {

    lateinit var binding: Layout_ActivityBinding


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = Layout_ActivityBinding.inflate(layoutInflater)
        setContentView(binding.root)

        binding.Main.setOnClickListener {

            replaceFragment(Main_App_Screen_Fragment())

        }

        binding.List.setOnClickListener {

        }

        binding.Map.setOnClickListener {

        }

        binding.Profile.setOnClickListener {

---


        }

        binding.Settings.setOnClickListener {

        }
    }

    private fun replaceFragment(fragment: Main_App_Screen_Fragment) {
        val fragmentManager = supportFragmentManager
        val fragmentTransaction = fragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.conteiner_fragment, fragment)
        fragmentTransaction.commit()
    }
}

Tried adding dependencies to Gradle, but nothing changed. Also, when I just created the binding, NameBinding was automatically generated for me. After that, I erased it and made it custom and I can’t do anything else because the application does not work.

please do this in gradle

android {
    buildFeatures {
        viewBinding true
        dataBinding true
    }
}

Assume that you have a layout .xml named as xyz_activity.xml
then android will create a binding named XyzActivityBinding

suggest you to check your .xml name

Also add

 buildFeatures {
        viewBinding true
 }

in your app build.gradle

If this solution not helping you recommend you to try this solution once. You facing this error because of XML.

<?xml version="1.0" encoding="utf-8"?>
<layout 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">
<data>
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".settingModuleFragment.itemList.ItemsListActivity">
<include
android:id="@+id/toolbarItemListLayout"
layout="@layout/toolbar" />
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
ads:adSize="BANNER"
ads:adUnitId="@string/banner_ad_id">
</com.google.android.gms.ads.AdView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/frame_fl"
android:layout_alignParentTop="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@id/relative_rl">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="@dimen/_8sdp"
android:id="@+id/rv_ll"
android:focusableInTouchMode="true"
android:orientation="vertical">
<EditText
android:id="@+id/search_edTxt"
android:layout_width="match_parent"
android:layout_height="@dimen/_35sdp"
android:paddingStart="@dimen/_4sdp"
android:background="@drawable/write_bg_color"
android:drawableStart="@drawable/ic_search_24"
android:inputType="text" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv_item"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
</LinearLayout>
<TextView
android:id="@+id/noItems_Tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="@dimen/_16ssp"
android:gravity="center"
android:visibility="gone"
style="@style/Label_Normal"
android:text="@string/you_haven_t_added_any_items"/>
</FrameLayout>
<RelativeLayout
android:id="@+id/relative_rl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/_8sdp"
android:layout_alignParentBottom="true"
android:layout_marginEnd="@dimen/_8sdp"
android:layout_marginBottom="@dimen/_5sdp"
android:layout_gravity="bottom">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/total"
android:textSize="@dimen/_14ssp"
android:textColor="@color/black"
android:gravity="center"
android:layout_alignParentStart="true"
android:fontFamily="@font/lato_bold"/>
<TextView
android:id="@+id/total_item_count_Tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:fontFamily="@font/lato_bold"
android:gravity="center"
android:text="@string/_0_0"
android:textColor="@color/black"
android:textSize="@dimen/_14ssp" />
<TextView
android:id="@+id/total_amount_count_Tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/lato_bold"
android:gravity="center"
android:layout_alignParentEnd="true"
android:text="@string/_0_0"
android:textColor="@color/black"
android:textSize="@dimen/_14ssp" />
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
</layout>

This is used if you need to use the <layout> tag whenever you are using DataBinding for the compiler to understand the special tags and generate the DataBinding class with the right variables and methods.

Original answer: https://stackoverflow.com/a/44682671/19674027