choosepiecescreen.java

经典的tictactoe游戏源代码

package example.tictactoe;

//import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
//import javax.microedition.io.*;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Image;

public class ChoosePieceScreen extends List implements CommandListener{

  private static final String CIRCLE_TEXT = "Circle";
  private static final String CROSS_TEXT = "Corss";

  private final TicTacToeMIDlet midlet;
  private final Command quitCommand;

  /** Constructor */
  public ChoosePieceScreen(TicTacToeMIDlet midlet){
    super("Choose your piece", List.IMPLICIT);
    this.midlet = midlet;
    append(CIRCLE_TEXT, loadImage("/circle.png"));
    append(CROSS_TEXT, loadImage("/cross.png"));
    quitCommand = new Command("quit", Command.EXIT, 2);
    addCommand(quitCommand);
    setCommandListener(this);
  }

  private Image loadImage(String imageFile) {
    Image image = null;
    try{
      image = Image.createImage(imageFile);
    }catch(Exception e){
      //
    }
    return image;
  }

  public void commandAction(Command c, Displayable d) {
    boolean isPlayerCircle = getString(getSelectedIndex()).equals(CIRCLE_TEXT);
    if (c == List.SELECT_COMMAND) {
      midlet.choosePieceScreenDone(isPlayerCircle);
    }
    else {
      midlet.quit();
    }
  }
}