Confirm dialog before exit android studio

Question

Hi guys I have an exit button on my main activity XML however I need it so when the user clicks it, it opens a dialogue to confirm the exit, if yes then exit. if no take them back.

here's my code so far, don't have any of that part however as I don't know where to start.

package com.tradingsoftwarelimited.labelprinter10;



import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.support.v7.app.ActionBarActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;





public class MainActivity extends ActionBarActivity {



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);









    //Sets Edit and Data Button to hidden

    Button hiddenButton = (Button) findViewById(R.id.editButton);

    hiddenButton.setVisibility(View.INVISIBLE);

    Button hiddenButton1 = (Button) findViewById(R.id.dataButton);

    hiddenButton1.setVisibility(View.INVISIBLE);



    //Acknolages settings button

    Button showButton = (Button) findViewById(R.id.settingsButton);



    //if clicked

    showButton.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View v) {

            //If clicked show Edit and data Button

            Button showButton = (Button) (findViewById(R.id.editButton));

            showButton.setVisibility(View.VISIBLE);

            Button showButton1 = (Button) (findViewById(R.id.dataButton));

            showButton1.setVisibility(View.VISIBLE);





        }

    });



}









    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getSupportActionBar().hide();

        return true;

        }

    };





;

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Answer 1

 private void confirmDialog(Context context){ 

   final AlertDialog alert = new AlertDialog.Builder(
                    new ContextThemeWrapper(context,android.R.style.Theme_Dialog))
                    .create();
            alert.setTitle("Alert");
            alert.setMessage("Do you want to exit ?");
            alert.setIcon(R.drawable.warning_icon);
            alert.setCancelable(false);
            alert.setCanceledOnTouchOutside(false);

            alert.setButton(DialogInterface.BUTTON_POSITIVE, "Yes",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {

                            alert.dismiss();

                            finish();

                        }
                    });

            alert.setButton(DialogInterface.BUTTON_NEGATIVE, "No",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {

                            alert.dismiss();

                        }
                    });

            alert.show();
}

Call this method in

@Override
    public void onBackPressed() {
        super.onBackPressed();
        confirmDialog(getApplicationContext());
    }

of your Activity

Confirm dialog before exit android studio

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