Recycler View inside frame layout not scrolling vertically-CodePudding

I have a recycler view inside fragment "Home" and it is not scrolling vertically. Can someone please help me out !! My fragment is inside home screen containing a toolbar, drawer navigation and bottom tab navigation . i got another recycler view inside home fragment and that recycler view is not scrolling

This recyclerView is not scrolling >>>

Here is my HomeScreen 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=".homeSc"
    android:id="@ id/constraintLayout">

    <FrameLayout
        android:id="@ id/frameLayout"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@id/bottomNavigationView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">
    </FrameLayout>

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@ id/bottomNavigationView"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:menu="@menu/bottom_nav_menu" />

    <androidx.drawerlayout.widget.DrawerLayout
        android:id="@ id/drawerNavigationDrawerLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:openDrawer="start">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <androidx.appcompat.widget.Toolbar
                android:id="@ id/drawerNavigationToolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="#B3E3E1"
                android:elevation="4dp"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                app:titleTextColor="@color/black"/>

            <FrameLayout
                android:id="@ id/drawerNavigationFragmentContainer"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:isScrollContainer="true"/>
        </LinearLayout>

        <com.google.android.material.navigation.NavigationView
            android:id="@ id/drawerNavigationView"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:headerLayout="@layout/drawer_nav_header"
            app:menu="@menu/drawer_menu" />
    </androidx.drawerlayout.widget.DrawerLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

Here is my Home Fragment Code

    <?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@ id/frameLayoutHomeSc"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".HomeFragment">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@ id/recyclerVFragHomeSc"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </androidx.constraintlayout.widget.ConstraintLayout>

</FrameLayout>

Recycler View Adapter Code

    package com.example.knowledgespaceapk;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;

public class adapterRecVHomeFrag  extends  RecyclerView.Adapter<adapterRecVHomeFrag.myviewholder>{

    ArrayList<dataModelRecVFragHome> dataHolder;

    public adapterRecVHomeFrag(ArrayList<dataModelRecVFragHome> dataHolder) {
        this.dataHolder = dataHolder;
    }

    @NonNull
    @Override
    public myviewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return new myviewholder(LayoutInflater.from(parent.getContext()).inflate(R.layout.single_row_design_rec_homef
                                    ,parent,false));
    }

    @Override
    public void onBindViewHolder(@NonNull myviewholder holder, int position) {
        holder.img.setImageResource(dataHolder.get(position).getImage());
        holder.title.setText(dataHolder.get(position).getTitle());
        holder.desc.setText(dataHolder.get(position).getDescription());
    }

    @Override
    public int getItemCount() {
        return dataHolder.size();
    }

    class myviewholder extends RecyclerView.ViewHolder{

        ImageView img;
        TextView title,desc;

        public myviewholder(@NonNull View itemView) {
            super(itemView);

            img = itemView.findViewById(R.id.imageVSingleRowDesRecHomeF);
            title = itemView.findViewById(R.id.titleTxtVSingleRDesRecHomeF);
            desc = itemView.findViewById(R.id.descriptionTxtVSingleRDesRecHomeF);
        }
    }
}

Recyler View Element layout Code

    <?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:cardCornerRadius="5dp"
    android:elevation="4dp"
    app:cardUseCompatPadding="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <ImageView
            android:id="@ id/imageVSingleRowDesRecHomeF"
            android:layout_width="match_parent"
            android:layout_height="219dp"
            android:visibility="visible"
            app:srcCompat="@drawable/fest" />

        <TextView
            android:id="@ id/titleTxtVSingleRDesRecHomeF"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:text="TextView"
            android:textColor="#000000"
            android:textSize="24sp"
            android:textStyle="bold" />

        <TextView
            android:id="@ id/descriptionTxtVSingleRDesRecHomeF"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="TextView"
            android:layout_marginLeft="8dp"
            android:textColor="#000000"
            android:textSize="24sp"
            android:textStyle="bold"/>
    </LinearLayout>

</androidx.cardview.widget.CardView>

Home Screen Java Code

    package com.example.knowledgespaceapk;


import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;

import android.os.Bundle;


import com.example.knowledgespaceapk.databinding.ActivityHomeScBinding;
import com.google.android.material.bottomnavigation.BottomNavigationView;


public class homeSc extends AppCompatActivity {
    private DrawerLayout drawerLayout;
    private BottomNavigationView bottomNavigationView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home_sc);

        Toolbar toolbar = findViewById(R.id.drawerNavigationToolbar);
        setSupportActionBar(toolbar);

        drawerLayout = findViewById(R.id.drawerNavigationDrawerLayout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,drawerLayout,
                            toolbar,R.string.open,R.string.close);
       drawerLayout.addDrawerListener(toggle);
        toggle.syncState();


        replaceFrag(new HomeFragment());
        bottomNavigationView = findViewById(R.id.bottomNavigationView);
        bottomNavigationView.setOnItemSelectedListener(item -> {

            switch (item.getItemId()){
                case R.id.home : replaceFrag(new HomeFragment()); break;
                case R.id.group: replaceFrag(new GroupFragment()); break;
                case R.id.notification:replaceFrag(new NotificationFragment()); break;
            }
            return true;
        });

    }//End OnCreate

    @Override
    public void onBackPressed() {
        if(drawerLayout.isDrawerOpen(GravityCompat.START)){
            drawerLayout.closeDrawer(GravityCompat.START);
        }else {
            super.onBackPressed();
        }
    }

    private  void replaceFrag(Fragment fragment){
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.frameLayout,fragment);
        fragmentTransaction.commit();
    }
}//End Main

CodePudding user response：

Try to set the DrawerLayout as parent view in your HomeScreen XML:

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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/drawerNavigationDrawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".homeSc"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <androidx.constraintlayout.widget.ConstraintLayout 
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@ id/constraintLayout">

        <FrameLayout
            android:id="@ id/frameLayout"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:layout_constraintBottom_toTopOf="@id/bottomNavigationView"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:id="@ id/bottomNavigationView"
            android:layout_width="match_parent"
            android:layout_height="60dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:menu="@menu/bottom_nav_menu" />

    </androidx.constraintlayout.widget.ConstraintLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <androidx.appcompat.widget.Toolbar
            android:id="@ id/drawerNavigationToolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="#B3E3E1"
            android:elevation="4dp"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:titleTextColor="@color/black"/>

        <FrameLayout
            android:id="@ id/drawerNavigationFragmentContainer"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:isScrollContainer="true"/>
        
    </LinearLayout>

    <com.google.android.material.navigation.NavigationView
        android:id="@ id/drawerNavigationView"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:headerLayout="@layout/drawer_nav_header"
        app:menu="@menu/drawer_menu" />
    
</androidx.drawerlayout.widget.DrawerLayout>