Android AlertDialog Example

Android AlertDialog can be used to display the dialog message with OK and Cancel buttons. It can be used to interrupt and ask the user about his/her choice to continue or discontinue.

 In this article Android AlertDialog Example AlertDialog using the display message, there are two conditions check this AlertDialog box follow the code Android AlertDialog Example. for the more information visit the android developer google

Follow the method for Android AlertDialog 

  closeButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //Uncomment the below code to Set the message and title from the strings.xml file

                builder.setMessage(R.string.dialog_message) .setTitle(R.string.dialog_title);

                //Setting message manually and performing action on button click builder.setMessage("Do you want to close this application ?")

                        .setCancelable(false)

                        .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog, int id) {

                                finish();

                                Toast.makeText(getApplicationContext(),"you choose yes action for alertbox",

                                        Toast.LENGTH_SHORT).show();

                            }

                        })

                        .setNegativeButton("No", new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog, int id) {

                                //  Action for 'NO' Button

                                dialog.cancel();

                                Toast.makeText(getApplicationContext(),"you choose no action for alertbox",

                                        Toast.LENGTH_SHORT).show();

                            }

                        });

                //Creating dialog box

                AlertDialog alert = builder.create();

                //Setting the title manually

                alert.setTitle("AlertDialogExample");

                alert.show();

            }

        });

    }

Follow the code Android AlertDialog:

1.MainActivity .java:

package com.akash.alertdialogbox;

import android.content.DialogInterface;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.app.AlertDialog;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Button closeButton;

    AlertDialog.Builder builder;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        closeButton = (Button) findViewById(R.id.button);

        builder = new AlertDialog.Builder(this);

      

  closeButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //Uncomment the below code to Set the message and title from the strings.xml file

                builder.setMessage(R.string.dialog_message) .setTitle(R.string.dialog_title);

                //Setting message manually and performing action on button click builder.setMessage("Do you want to close this application ?")

                        .setCancelable(false)

                        .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog, int id) {

                                finish();

                                Toast.makeText(getApplicationContext(),"you choose yes action for alertbox",

                                        Toast.LENGTH_SHORT).show();

                            }

                        })

                        .setNegativeButton("No", new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog, int id) {

                                //  Action for 'NO' Button

                                dialog.cancel();

                                Toast.makeText(getApplicationContext(),"you choose no action for alertbox",

                                        Toast.LENGTH_SHORT).show();

                            }

                        });

                //Creating dialog box

                AlertDialog alert = builder.create();

                //Setting the title manually

                alert.setTitle("AlertDialogExample");

                alert.show();

            }

        });

    }

}

2.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="example.javatpoint.com.alertdialog.MainActivity">

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:id="@+id/button"

        android:text="Close app"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintLeft_toLeftOf="parent"

        app:layout_constraintRight_toRightOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

3.strings.xml:

<resources>

    <string name="app_name">Alert Dialog Box</string>

        <string name="dialog_message">Welcome to Alert Dialog</string>

        <string name="dialog_title">Javatpoint Alert Dialog</string>

</resources>

4.AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.akash.alertdialogbox">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

5.Output:

Android AlertDialog Example