source: advance-wars/src/com/medievaltech/advancewars/Game.java

package com.medievaltech.advancewars;

import java.io.*;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Window;

import com.medievaltech.advancewars.Enum.*;

public class Game extends Activity {
        
    /**
     * Invoked during init to give the Activity a chance to set up its Menu.
     * 
     * @param menu the Menu to which entries may be added
     * @return true
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);

        menu.add(0, MenuOption.END_TURN.ordinal(), 0, R.string.menu_end_turn);
        menu.add(0, MenuOption.SAVE.ordinal(), 0, R.string.menu_save);
        menu.add(0, MenuOption.MAIN.ordinal(), 0, R.string.menu_main);
        menu.add(0, MenuOption.EXIT.ordinal(), 0, R.string.menu_exit);
        return true;
    }

    /**
     * Invoked when the user selects an item from the Menu.
     * 
     * @param item the Menu entry which was selected
     * @return true if the Menu item was legit (and we consumed it), false
     *         otherwise
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int i = item.getItemId();
        
        if(i == MenuOption.END_TURN.ordinal()) {
                Static.turn = Turn.ENEMY_TURN;
        }else if(i == MenuOption.SAVE.ordinal()) {
                try {
                        PrintWriter p = new PrintWriter(new FileWriter(android.os.Environment.getExternalStorageDirectory()+"/save.txt"));
                        Static.map.save(p);
                        p.close();
                }catch(IOException ioe) {
                        ioe.printStackTrace();
                }
        }else if(i == MenuOption.MAIN.ordinal()) {
                Static.gameState = GameState.MAIN_MENU;
        }else if(i == MenuOption.EXIT.ordinal()) {
                finish();
        }

        return true;
    }

    /**
     * Invoked when the Activity is created.
     * 
     * @param savedInstanceState a Bundle containing state saved from a previous
     *        execution, or null if this is a new execution
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.w("AdvanceWars", "We're inside onCreate");
        
        super.onCreate(savedInstanceState);
        
        Log.w("AdvanceWars", "the super constructor was called successfully");

        // turn off the window's title bar
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        
        // tell system to use the layout defined in our XML file
        setContentView(R.layout.main);
        
        /*View v = findViewById(R.id.main_view);
        Log.i("AdvanceWars", "view is null?: " + (v==null));*/
        
        Static.game = this;

        if (savedInstanceState == null) {       // we were just launched: set up a new game
                Log.w("AdvanceWars", "SIS is null");
        } else {
            Log.w("AdvanceWars", "SIS is nonnull");
            
            Static.gameState = (GameState)savedInstanceState.getSerializable("gameState");
        }
    }
    
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v,
                                    ContextMenuInfo menuInfo) {
      super.onCreateContextMenu(menu, v, menuInfo);
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.map_menu, menu);
    }

    /**
     * Notification that something is about to happen, to give the Activity a
     * chance to save state.
     * 
     * @param outState a Bundle into which this Activity should save its state
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putSerializable("gameState", Static.gameState);
        
        super.onSaveInstanceState(outState);
        Log.w("AdvanceWars", "onSaveInstanceState called");
    }
    
    @Override
    protected void onStop() {
        System.exit(1);
        super.onStop();
    }
}