J2ME 拼图游戏 快速开发 全过程 （四）——游戏选项设置界面

代码：

package cn.edu.xtu.tilepuzzle.ui;


import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;


import cn.edu.xtu.tilepuzzle.GameDB;
import cn.edu.xtu.tilepuzzle.model.BoardModel;




public class GameSetUI extends Form implements CommandListener {
public boolean reversed;
public boolean funny;
public boolean hard;
public boolean addString;
public boolean rowColumnIs_4x3=false;
Command ok;
Command cancel;
public Display dpy;
public Displayable prev;
ChoiceGroup baseSet;
ChoiceGroup hardSet;
ChoiceGroup rowColumnSet;

BoardModel boardModel;


public GameSetUI(BoardModel boardModel,Display dpy_, Displayable prev_) {
super("游戏设置");
this.boardModel=boardModel;
dpy = dpy_;
prev = prev_;

initSetData();


append("基本设置:");
baseSet = new ChoiceGroup(null, Choice.MULTIPLE);
baseSet.append("反向", null);
baseSet.append("趣味洗牌", null);
baseSet.append("标记方格", null);
append(baseSet);


// use a label here
append("难易程度:");
hardSet = new ChoiceGroup(null, Choice.EXCLUSIVE);
hardSet.append("简单", null);
hardSet.append("困难", null);
append(hardSet);

append("行、列数 设置:");
rowColumnSet = new ChoiceGroup(null, Choice.EXCLUSIVE);
rowColumnSet.append("4 行，3 列", null);
rowColumnSet.append("5 行，4 列", null);
append(rowColumnSet);


loadUI();

cancel = new Command("取消", Command.CANCEL, 0);
ok = new Command("确定", Command.OK, 1);
addCommand(ok);
addCommand(cancel);
setCommandListener(this);
}
public void initSetData(){
/*
* gameSetData[0]:orgImageString 图片路径默认 DataBase.orgImageString
* gameSetData[1]:反向boolean true 反向 false reversed
* gameSetData[2]:趣味洗牌boolean true 是 falsefunny
* gameSetData[3]:标记方格 boolean true 标记 trueaddString
* gameSetData[4]:困难/简单boolean true 困难 truehard
* gameSetData[5]:行大小 int rows 4 rows
* gameSetData[6]:列大小 int columns 5columns
* gameSetData[7]:行/列String 3x4rowColumn
* */
// set up default values
if(boardModel.gameSetData[GameDB.IndexInGameSetDatat_reversed].equals("false")){
reversed = false;
}else {
reversed = true;
}
if(boardModel.gameSetData[GameDB.IndexInGameSetDatat_funny].equals("false")){
funny = false;
}else {
funny = true;
}
if(boardModel.gameSetData[GameDB.IndexInGameSetDatat_addString].equals("false")){
addString = false;
}else {
addString = true;
}
if(boardModel.gameSetData[GameDB.IndexInGameSetDatat_hard].equals("false")){
hard = false;
}else {
hard = true;
}
if(boardModel.gameSetData[GameDB.IndexInGameSetDatat_columns].equals("4")){
rowColumnIs_4x3 = true;
}else {
rowColumnIs_4x3 = false;
}
}


public void commandAction(Command c, Displayable d) {
if (c == ok) {
readUI();
boardModel.updateGameData(GameSetUI.this);
System.out.println("点击了确定按键");
} else if (c == cancel) {
loadUI();
System.out.println("点击了返回按键");
}
dpy.setCurrent(prev);
System.out.println("返回到跳转前页面");
}


void loadUI() {
baseSet.setSelectedIndex(0, reversed);
baseSet.setSelectedIndex(1, funny);
baseSet.setSelectedIndex(2, addString);
hardSet.setSelectedIndex((hard ? 1 : 0), true);
rowColumnSet.setSelectedIndex(rowColumnIs_4x3 ? 0 : 1, true);
}


void readUI() {
reversed = baseSet.isSelected(0);
funny = baseSet.isSelected(1);
addString=baseSet.isSelected(2);
hard = hardSet.isSelected(1);
rowColumnIs_4x3=rowColumnSet.isSelected(0);
}
}

运行时显示如图：