Question

I once read a tutorial but since then my phone had been wiped out by XBOX, and so I lost it. I want there to be a button on the MainActivity to open up an AlertDialog Box stating app info such as version number, about current version, what android version this one is for, etc.

 package com.apw.games.rpg.medieval;

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

public class MainActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}

@Override public void onNothingSelected(AdapterView<?> parent) {

     }
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
    MenuInflater inflater = getMenuInflater(); 
    inflater.inflate(R.menu.menu, menu); return true; }

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle item selection 
    switch (item.getItemId()) { 


        case R.id.quit: 
        Intent intent =  new Intent(this, Exit.class); 
        startActivity(intent); 
        return true; 
        case R.id.new_game: 
            Intent i = new Intent(this, New_Game.class); 
            startActivity(i); 
            return true; 
        case R.id.visit_site: 
            Intent inte = new Intent(this, Site.class); 
            startActivity(inte); 
            return true; 
        default: return super.onOptionsItemSelected(item);

        }}

Answer 1

First of all declarate the AlertDialog type object:

AlertDialog alertDialog = new AlertDialog.Builder(Main.this).create();

Main.this is my activity’s context.
You can set your dialog’s title like this:

alertDialog.setTitle("Title");

And a message:

alertDialog.setMessage("Your text");

Next thing, set your button(s) functions:

alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface dialog, int which) {

   //here you can add functions

} });

And you can change the icon of your AlertDialog using this line:
alertDialog.setIcon(R.drawable.icon);

Last thing, don’t forget to show your dialog:

alertDialog.show();