AlertDialogActivity.java

package com.godoro.androidbasics;

import android.app.*;
import android.content.*;
import android.os.*;
import android.view.*;
import android.widget.*;

public class AlertDialogActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_alert_dialog);
    }

    public void onClickShowDialog(View view) {
        showExitDialogLong();
        //showExitDialogShort();
    }

    private void showExitDialogLong(){
        AlertDialog.Builder builder = new AlertDialog.Builder(AlertDialogActivity.this);
        builder.setMessage("Çıkmak istiyor musunuz?");
        builder.setCancelable(true);
        builder.setPositiveButton("Çık",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        AlertDialogActivity.this.finish();
                    }
                });
        builder.setNegativeButton("Vazgeç",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(AlertDialogActivity.this,
                                "Uygulamaya devam", Toast.LENGTH_LONG)
                                .show();
                    }
                });
        AlertDialog dialog = builder.create();
        dialog.show();
    }
    private void showExitDialogShort(){

        new AlertDialog.Builder(AlertDialogActivity.this)
                .setMessage("Çıkmak istiyor musunuz?")
                .setCancelable(true)
                .setPositiveButton("Çık",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                AlertDialogActivity.this.finish();
                            }
                        })
                .setNegativeButton("Vazgeç",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                Toast.makeText(AlertDialogActivity.this,
                                        "Uygulamaya devam", Toast.LENGTH_LONG)
                                        .show();
                            }
                        })
                .create()
                .show();
    }
}