How to Create Custom Alert Dialog in App | Android Studio Tutorials for Beginner 2022

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Create Alert Dialog - Android Studio

activity_main.xml

<?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="match_parent"
    android:padding="20dp"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/showsnackbarbtn"
        android:text="Show Alert Dialog"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

MainActivity.java

package com.usmtip.myapplication;

import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;



public class MainActivity extends AppCompatActivity {

    Button showDialogBtn;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);






        showDialogBtn = findViewById(R.id.showsnackbarbtn);
        showDialogBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                AlertDialog.Builder mAlertDialog = new AlertDialog.Builder(MainActivity.this);
                mAlertDialog.setIcon(R.drawable.ic_baseline_close_24); //set alertdialog icon
                mAlertDialog.setTitle("Title!"); //set alertdialog title
                mAlertDialog.setMessage("Your message here"); //set alertdialog message
                mAlertDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        //perform some tasks here
                        Toast.makeText(MainActivity.this, "Yes", Toast.LENGTH_SHORT).show();
                    }
                });
                mAlertDialog.setNegativeButton("No", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        //perform som tasks here
                        Toast.makeText(MainActivity.this, "No", Toast.LENGTH_SHORT).show();
                    }
                });
                mAlertDialog.show();

            }
        });

    }

}