Android Custom Dialog Popup Java

1/  Create  A New Project add xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/main"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:background="@color/white"
    tools:context=".MainActivity">

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

        <LinearLayout
            android:id="@+id/linearLayout2"
            android:layout_width="match_parent"
            android:layout_height="350dp"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/imageView3"
                android:layout_width="match_parent"
                android:layout_height="350dp"
                android:scaleType="centerCrop"
                app:srcCompat="@drawable/img" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="430dp"
            android:layout_marginTop="300dp"
            android:background="@drawable/des_layout"
            android:orientation="vertical"
            app:layout_constraintTop_toTopOf="parent">

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

                <TextView
                    android:id="@+id/textView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="25dp"
                    android:layout_marginTop="20dp"
                    android:text="Burger with melted cheese"
                    android:textSize="25sp"
                    android:textStyle="bold" />

                <TextView
                    android:id="@+id/textView2"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="25dp"
                    android:layout_marginTop="8dp"
                    android:text="from tk 390"
                    android:textSize="20dp"
                    android:textStyle="bold" />

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:layout_marginTop="8dp"
                    android:text="Rate"
                    android:textSize="20sp" />

                <RatingBar
                    android:layout_width="wrap_content"
                    android:layout_height="50dp"
                    android:layout_marginLeft="20dp"
                    android:layout_marginTop="8dp" />

                <TextView
                    android:id="@+id/textView3"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="25dp"
                    android:layout_marginTop="3dp"
                    android:layout_marginRight="10dp"
                    android:text="Imagine a thick, juicy burger patty, seared to perfection with a crispy outer crust and a tender, flavorful center. As it sits on a lightly toasted brioche bun, a generous layer of melted cheese cascades over the top, hugging the patty with creamy richness. The cheese, perfectly melted, stretches with every bite"
                    android:textSize="19dp"
                    android:textStyle="bold" />

            </LinearLayout>

        </LinearLayout>

    </androidx.constraintlayout.widget.ConstraintLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="75dp"
        android:layout_alignParentBottom="true"
        android:layout_marginTop="15dp"
        android:background="#D3D3D3"
        android:orientation="vertical"
        tools:layout_marginTop="500dp">


        <Button
            android:id="@+id/btn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="230dp"
            android:layout_marginTop="15dp"
            android:text="Place Order" />


    </LinearLayout>

</RelativeLayout>

2/  Add a custom xml for popup dialog popup_lay_xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    android:background="#E4E3E3">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:id="@+id/len"
        android:orientation="horizontal"
        android:layout_margin="5dp"
        android:background="@drawable/popup">

        <ImageView
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:scaleType="fitStart"
            android:src="@drawable/img" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Burger with melted cheese"
            android:layout_marginLeft="10dp"
            android:layout_marginTop="9dp"
            android:textSize="18sp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="tk 399"
            android:layout_marginTop="50dp"
            android:textSize="17dp"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:layout_below="@+id/len"
        android:id="@+id/sen"
        android:orientation="vertical"
        android:layout_margin="5dp"
        android:background="@drawable/popup">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_location_24"
                android:layout_marginLeft="15dp"
                android:layout_marginTop="15dp"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="25dp"
                android:text="Delivery address"
                android:layout_marginTop="10dp"
                android:layout_marginLeft="5dp"
                android:textStyle="bold"/>
            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_edit_24"
                android:layout_marginLeft="80dp"
                android:layout_marginTop="10dp"/>

        </LinearLayout>

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

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="90dp"
                android:layout_marginTop="9dp"
                android:scaleType="centerCrop"
                android:src="@drawable/img_1" />

        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Jenia cloth store"
            android:textStyle="bold"
            android:textSize="20dp"
            android:layout_marginLeft="10dp"
            android:layout_marginTop="8dp"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="9dp"
            android:text="Dhaka"
            android:textSize="15dp"
            tools:ignore="TextSizeCheck" />

    </LinearLayout>

    <LinearLayout
        android:id="@+id/lin"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_below="@+id/sen"
        android:layout_margin="5dp"
        android:layout_marginTop="20dp"
        android:layout_marginBottom="10dp"
        android:background="@drawable/popup"
        android:orientation="vertical">

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

            <ImageView
                android:id="@+id/imageView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="15dp"
                android:layout_marginTop="15dp"
                app:srcCompat="@drawable/ic_wallet_24" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:layout_marginTop="15dp"
                android:text="Payment method"
                android:textSize="18sp"
                android:textStyle="bold" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@drawable/ic_add_24"
                android:layout_marginLeft="15dp"
                android:layout_marginTop="15dp"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Add a Payment method"
                android:layout_marginTop="15dp"
                android:layout_marginLeft="10dp"
                android:textSize="17dp"/>
        </LinearLayout>


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:id="@+id/san"
        android:orientation="vertical"
        android:layout_below="@+id/lin"
        android:layout_margin="5dp"
        android:background="@drawable/popup">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="30sp"
            android:textStyle="bold"
            android:layout_marginLeft="25dp"
            android:layout_marginTop="10dp"
            android:text="Order Summary"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="1x Burger with melted cheese  tk 399"
            android:textSize="20sp"
            android:layout_marginTop="10dp"
            android:layout_marginLeft="20sp"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:layout_marginLeft="15dp"
            android:textSize="20dp"
            android:text="Subtotal                   tk 399"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:layout_marginLeft="15dp"
            android:textSize="20sp"
            android:text="Standard delivery                Fiee"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:layout_marginLeft="15dp"
            android:text="Platform Fee tk4"/>

    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:id="@+id/sin"
        android:background="@drawable/popup"
        android:layout_below="@id/san"
        android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10dp"
            android:text="The patty was juicy, well-seasoned, and cooked to perfection with just the right amount of char on the outside."
            android:layout_marginLeft="8dp"
            android:layout_marginRight="8dp"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:layout_below="@+id/sin"
        android:orientation="vertical"
        android:background="@drawable/popup">
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/white"
            android:text="Confrom Order"
            android:textSize="20dp"
            android:textStyle="bold"
            />
    </LinearLayout>
</RelativeLayout>

3/  Add your xml  in the  MainAcitivity.class

package com.example.pop_upwindow;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {

    Button btn;
    @SuppressLint("MissingInflatedId")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });

        btn=findViewById(R.id.btn);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDialog();
            }
        });
    }

    private void showDialog() {
        final Dialog dialog = new Dialog(this);

        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(R.layout.mainpopup);

        LinearLayout len = dialog.findViewById(R.id.len);
        LinearLayout sen = dialog.findViewById(R.id.sen);
        LinearLayout lin = dialog.findViewById(R.id.lin);
        LinearLayout san = dialog.findViewById(R.id.san);

        len.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

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

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

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

            }
        });

        dialog.show();
        dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT);
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        dialog.getWindow().setGravity(Gravity.CENTER);
    }


}