Bottom Sheet Fragment

STEP 1: Create xml dialog

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="wrap_content"
    android:padding="20sp"
    android:background="@color/white"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv_select_address"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:gravity="center"
        android:paddingTop="10dp"
        android:paddingBottom="10dp"
        android:text="@string/exit_text"
        android:textColor="@color/black"
        android:textSize="18sp"
        android:textStyle="bold" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <androidx.cardview.widget.CardView
            android:id="@+id/card_cancel"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:layout_weight="1"
            android:clickable="true"
            android:focusable="true"
            android:foreground="@drawable/ripple2"
            app:cardCornerRadius="16sp"
            tools:ignore="UnusedAttribute">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:background="@color/colorPrimary"
                android:gravity="center"
                android:padding="12dp"
                android:text="@string/cancel"
                android:textColor="@color/white"
                android:textSize="16sp" />

        </androidx.cardview.widget.CardView>

        <androidx.cardview.widget.CardView
            android:id="@+id/card_exit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:layout_weight="1"
            android:clickable="true"
            android:focusable="true"
            android:foreground="@drawable/ripple2"
            app:cardCornerRadius="16sp"
            tools:ignore="UnusedAttribute">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:background="@color/colorPrimary"
                android:gravity="center"
                android:padding="12dp"
                android:text="@string/exit"
                android:textColor="@color/white"
                android:textSize="16sp" />

        </androidx.cardview.widget.CardView>

    </LinearLayout>


</LinearLayout>

STEP 1: Create fragment (java)

import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import androidx.annotation.Nullable;
import androidx.cardview.widget.CardView;

import com.developerbrothers.dailynews.Activity.MainActivity;
import com.developerbrothers.dailynews.R;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import com.google.android.material.bottomsheet.BottomSheetDialogFragment;

import java.util.Objects;

public class BottomSheetFragment extends BottomSheetDialogFragment {


    public static BottomSheetFragment newInstance() {
        BottomSheetFragment fragment = new BottomSheetFragment();
        return fragment;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public void setupDialog(Dialog dialog, int style) {
        View contentView = View.inflate(getContext(), R.layout.bottom_sheet_exit, null);
        TextView tv_select_address = contentView.findViewById(R.id.tv_select_address);
        CardView card_cancel = contentView.findViewById(R.id.card_cancel);
        CardView card_exit = contentView.findViewById(R.id.card_exit);


        card_cancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });

        card_exit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MainActivity.   fa.finish();
            }
        });

        dialog.setCanceledOnTouchOutside(true);
        dialog.setContentView(contentView);
        ((View) contentView.getParent()).setBackgroundColor(getResources().getColor(android.R.color.white));
    }

}

STEP 3: Call 

private void showExitDialog() {
    BottomSheetFragment bottomSheetDialog = BottomSheetFragment.newInstance();
    bottomSheetDialog.show(getSupportFragmentManager(), "Exit Dialog");
}