Android AlertDialog üç bölgeden oluşur: başlık, içerik alanı ve eylem düğmeleri.

Android AlertDialog Dialog sınıfının alt sınıfıdır.

Birden fazla bileşene sahip olabilirsiniz, burada sadece bir textview sahibiz.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="25dp"
        android:text="Webinyo.COM"
        android:id="@+id/textView"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="162dp" />

</RelativeLayout>

AlertDialog oluşturmak ve göstermek için kodu yazalım.

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        //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("Uygulamadan Çıkmak İstiyormusunuz ?")
                .setCancelable(false)
                .setPositiveButton("Evet", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        finish();
                    }
                })
                .setNegativeButton("Hayır", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        //  Action for 'NO' Button
                        dialog.cancel();
                    }
                });

        //Creating dialog box
        AlertDialog alert = builder.create();
        //Setting the title manually
        alert.setTitle("Alert Dialog Örneği");
        alert.show();
        setContentView(R.layout.activity_main);
    }

}

[:en]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.

Android AlertDialog is composed of three regions: title, content area and action buttons.

Android AlertDialog is the subclass of Dialog class.

You can have multiple components, here we are having only a textview.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="25dp"
        android:text="Webinyo.COM"
        android:id="@+id/textView"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="162dp" />

</RelativeLayout>

Let’s write the code to create and show the AlertDialog.

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        //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("Uygulamadan Çıkmak İstiyormusunuz ?")
                .setCancelable(false)
                .setPositiveButton("Evet", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        finish();
                    }
                })
                .setNegativeButton("Hayır", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        //  Action for 'NO' Button
                        dialog.cancel();
                    }
                });

        //Creating dialog box
        AlertDialog alert = builder.create();
        //Setting the title manually
        alert.setTitle("Alert Dialog Örneği");
        alert.show();
        setContentView(R.layout.activity_main);
    }

}

[:]