How to set Alert Dialog Positive and Negative Button in Android

In this android programming source code example, we are going to set Alert Dialog Positive and Negative Button in Android.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to set Alert Dialog Positive and Negative Button in Android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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=".progressbar.ProgressBar18">

</android.support.constraint.ConstraintLayout>

MainActivity.java

import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;


public class ProgressBar18 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_progress_bar18);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("InduceSmile Code Snippet");
        builder.setMessage("This is Alert Dialog Box with Positive and Negative Button")
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        Toast.makeText(getApplicationContext(), "This is a positive button", Toast.LENGTH_LONG).show();
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        Toast.makeText(getApplicationContext(), "This is a negative button", Toast.LENGTH_LONG).show();
                        dialog.cancel();
                    }
                });
        AlertDialog alertdialog = builder.create();
        alertdialog.show();
    }
}

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