moto388SDK http://kb.motorola.metrowerks.com/motorola/toolsHome.do
jdk1.3.1 sun.com
jcreator http://www.jcreator.com/Download.htm
1,怎么然程序知道是运行在模拟器上还是在手机上
看IMEI号。一般手机按"*#06#"就可得到imei码，每个手机是唯一的。
public void paint(Graphics g) {
g.drawString("Phone Parameter:",0, 0, 16|4);
g.drawString("IMEI:",0, 30,16|4);
g.drawString(System.getProperty("phone.imei"),0, 60,16|4);
g.drawString("Network Parameter:",0, 90, 16|4);
g.drawString("MCC:"+System.getProperty("phone.mcc"),0, 120,16|4);
g.drawString("MNC:"+System.getProperty("phone.mnc"),0, 150, 16|4);
g.drawString("LAI:"+System.getProperty("phone.lai"),0, 180, 16|4);
g.drawString("CID:"+System.getProperty("phone.cid"),0, 210, 16|4);
}
2 看别人的game源代码时，找不到resource(图片)的原因，
如果你还没有添加一个叫做J2ME_RESOURCE_DIR的新的环境变量的话,建立他,具体步骤如下:
win98下：编辑c:\autoexec.bat文件，加入set J2ME_RESOURCE_DIR=你的工程目录，重起系统。
win2k下：我的电脑-》属性-》高级-》环境变量-》系统-》添加-》名称：J2ME_RESOURCE_DIR
内容：你的工程目录
配好后，每当你在jcreator中打开时，就自动转向你的J2ME_RESOURCE_DIR所指定的目录
3 四级灰度的颜色值怎么表示？
private final static int WHITE_COLOR = 0x00FFFFFF;
private final static int LIGHT_GRAY = 0x00888888;
private final static int DARK_GRAY = 0x00444444;
private final static int BLACK_COLOR = 0x00000000;
4 关于开发工具
MotoJ2SDK是为摩托罗拉388手机定制的命令行开发工具包，当然也可与IDE开发工具集成从而方便用户的开发。其中可以集成的开发环境包括：CodeWarrior, JCreator等。
另外SUN公司还提供了Java的开发工具，J2ME Wireless Tookit是为无线手持设备（MDIP）定制的简易开发工具包。如果用户需要更强的IDE开发环境，那么请选用Forte for Java CE。目前SUN公司提供的开发工具中暂时还没有388的模拟器。
Java 2 SDK 1.3是必备的，它提供开发、测试和运行Java程序的平台
本人推荐jcreator.
5 Jcreater+MotoJ2SDK的配置与使用心得
假设安装路径如下：
JCreator D:\Program Files\Xinox Software\JCreator LE
motoj2sdk D:\Motoj2sdk
JDK D:\jdk1.3.1
注意：要先击活模拟环境，运行D:\MotoJ2SDK\generic\scripts\runConstructor.bat
选择手机型号，选择语言，选择normal， 再"创建"。
启动Jcreater之后我的配置如下：
第一步 选择 Configure->Options->JDK Profiles
注意：一定新建 profile and select “D:\jdk1.3.1”
将名字改为“J2ME 388”
Add classes path “D:\Motoj2sdk\lib”
Add documentation path “D:\Motoj2sdk\docs”
分别将后加的两行移到最上方.
第二步 选择 Configure->Options->JDK Tools
选择Complier
选中 and edit it.
将 parameters 变为 -O -bootclasspath D:/motoj2sdk/lib $[JavaFiles]
第三步
选择 Configure->Options->Tools
点击“New”选择 DOS command
名字为“Preverifier”
将 arguments 换为 d:\Motoj2sdk\bin\preverifier.exe -classpath "d:\Motoj2sdk\lib" -d . .
将 initial directory 变为 “$[PrjDir]”
第四步
按上面的方法在New一个 DOS command
名字：“Run Emulator”
将 arguments 换成 “java -Djava.library.path=d:/MotoJ2SDK/lib -classpath "d:/MotoJ2SDK/bin/Emulator.jar";"d:/MotoJ2SDK/ConfigTool.jar" com.mot.tools.j2me.emulator.Emulator -classpath$[PrjDir];"d:/MotoJ2SDK/lib" -deviceFile d:/MotoJ2SDK/bin/resources/device.props javax.microedition.midlet.AppManager $[CurClass] -JSA 1 1”
将 initial directory 换成 “d:\Motoj2sdk\bin”
第五步
New DOS command “Create Jar”
Change arguments to “"$[JavaHome]\bin\jar.exe" cvfM $[PrjName].jar META-INF\MANIFEST.MF *.CLASS *.png”
Change initial directory to “$[PrjDir]”
NOTE: You must add META-INF\MANIFEST.MF in the project
NOTE: You must change the directory “com/mot/project/*.CLASS” when you create your project.
NOTE: If you have resource files, you should also add these files into jar file, 1 folder is not necessary.
ok!编辑工具配置完毕！
新建一个工程——选择Empty Project
再取一个名字 比如：test
则jcreater自动在你的工作目录中生成目录test
再new一个file选择java File
写好你的原代码，保存 如：test.java
在Project中 选add file
然后选中你刚才的test.java
注意：不要有package ;
编译——》tools中的Preverifier进行预先审核——》tools中的Run Emulator进行模拟
test.java 的例子：功能是捕捉键盘输入的ascII吗。
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class test extends MIDlet implements CommandListener {
/**
* The screen for this MIDlet
*/
private KeyEventsDemoCanvas myCanvas;
/**
* Reference to current Display
*/
private Display myDisplay;
/**
* Command to make sure soft key is not a key event
*/
private Command okCommand = new Command("OK", Command.OK, 1);
test() {
myDisplay = Display.getDisplay(this);
myCanvas = new KeyEventsDemoCanvas();
myCanvas.addCommand(okCommand);
myCanvas.setCommandListener(this);
}
/**
* Do nothing if a command is fired
*/
public void commandAction(Command c, Displayable s) {
}
/**
* Start the MIDlet
*/
protected void startApp() throws MIDletStateChangeException {
myDisplay.setCurrent(myCanvas);
}
/**
* Pause the MIDlet
*/
protected void pauseApp() {
}
/**
* Called by the framework before the application is unloaded
*/
protected void destroyApp(boolean unconditional) {
}
/**
* The screen for this application
*/
class KeyEventsDemoCanvas extends Canvas {
/**
* Background color (i.e. the color of the screen)
*/
public final int BACKGROUND_COLOR = 0xFFFFFF; // white
/**
* Foreground color (i.e. the color of the rectangles)
*/
public final int FOREGROUND_COLOR = 0x000000; // black
/**
* Last key that was pressed
*/
private int lastKey;
/**
* Paint the screen
*/
public void paint(Graphics g) {
/*
* Clear the screen
*/
g.setColor(BACKGROUND_COLOR);
g.fillRect(0, 0, getWidth(), getHeight());
/*
* Paint the message
*/
g.setColor(FOREGROUND_COLOR);
g.drawString("Press a key!", 0, 0, Graphics.TOP | Graphics.LEFT);
if (lastKey != 0) {
g.drawString("Key Code: " + lastKey, 0, g.getFont().getHeight(),
Graphics.TOP | Graphics.LEFT);
try {
g.drawString("Action: " + getGameAction(lastKey), 0,
2 * g.getFont().getHeight(),
Graphics.TOP | Graphics.LEFT);
g.drawString("Key Name: " + getKeyName(lastKey), 0,
3 * g.getFont().getHeight(),
Graphics.TOP | Graphics.LEFT);
} catch (Exception e) {
// ignore since alphabet keys will throw this exception
}
}
}
/**
* Handle key press
*/
public void keyPressed(int keyCode) {
lastKey = keyCode;
repaint();
}
/**
* Demonstrate keyRepeated events
*/
public void keyRepeated(int keyCode) {
System.out.println("Key repeated " + keyCode);
}
}
}
6怎么在主类中响应按钮消息，这个对于切换显示很有帮助。
//文件名 LWTDemoMIDlet.java
import com.motorola.lwt.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class LWTDemoMIDlet extends MIDlet implements CommandListener
{
class ButtonScreen extends ComponentScreen {
public ButtonScreen() {
// Add a button to the screen
Button b1 = new Button("b");
///////////下面的代码是设定按钮高度
b1.setBottomEdge(Component.HEIGHT, 30);
///////////下面的代码是设定按钮宽度
b1.setRightEdge(Component.WIDTH,80);
///////////下面的代码是设定按钮y坐标,a相对屏幕最上
b1.setTopEdge(Component.SCREEN_TOP, 10);
///////////下面的代码是设定按钮x坐标相对前一个控件
b1.setLeftEdge(Component.PREVIOUS_COMPONENT_RIGHT, 30);
add(b1);
// Add another button to the screen
Button b2 = new Button("点我就行了"){
public void componentActuated() {
Show();
}
};
// Extend the right edge to the right edge of the screen
b2.setRightEdge(Component.WIDTH, 220);
b2.setBottomEdge(Component.HEIGHT, b2.getPreferredHeight() * 2);
add(b2);
Command next = new Command("Next", Command.OK, 1);
Command prev = new Command("Previous", Command.BACK, 1);
addCommand(next);
addCommand(prev);
}
};
ButtonScreen screens = new ButtonScreen();
public LWTDemoMIDlet() {
screens.setCommandListener(this);
}
protected void startApp()
throws MIDletStateChangeException {
Display.getDisplay(this).setCurrent(screens);
}
protected void pauseApp()
{
}
protected void destroyApp(boolean unconditional)
throws MIDletStateChangeException
{
}
public void Show()
{
System.out.println("Get it on main Class");
}
public void commandAction (Command c, Displayable d)
{
if (screens == d) {
// Found it, check which command was triggered
if (c.getCommandType() == Command.BACK) {
System.out.println("back");
}
else if (c.getCommandType() == Command.OK) {
System.out.println("ok");
}
return;
}
}
}
7 中文显示，存储问题。把中文写入rms中，再读出。
public void openRMS(){
try{
recordStore = RecordStore.openRecordStore(RECORD_STORE,true);
}
catch(Exception e){db(e.toString());}
System.out.println("RMS opened successfully!");
}
public void closeRMS(){
try{
recordStore.closeRecordStore();
}
catch(Exception e){ db(e.toString());}
System.out.println("RMS closed successfully!");
}
public void deleteRMS(){
if(recordStore.listRecordStores() != null){
try{
recordStore.deleteRecordStore(RECORD_STORE);}
catch(Exception e){ db(e.toString());}
}
System.out.println("RMS deleted successfully!");
}
public void writeRMS(int id,String str ){
// String ws;
// userId = inputScreen.f1.getText();
System.out.println("check input: " +str);
// ws=new String(userId+" "+score);
writeStream(id,str);
System.out.println("RMS writed successfully!");
}
public void writeStream(int id,String sData){
try{
ByteArrayOutputStream strmBytes = new ByteArrayOutputStream();
DataOutputStream strmDataType = new DataOutputStream(strmBytes);
byte[] record;
strmDataType.writeUTF(sData);
strmDataType.flush();
record = strmBytes.toByteArray();
if(recordStore.getNumRecords()==2)
recordStore.setRecord(id,record,0,record.length);
else recordStore.addRecord(record,0,record.length);
strmBytes.reset();
strmBytes.close();
strmDataType.close();
}
catch(Exception e){ db(e.toString());}
}
public void readRMS(){
try{
byte[] data = new byte[50];
ByteArrayInputStream strmBytes = new ByteArrayInputStream(data);
DataInputStream strmDataType = new DataInputStream(strmBytes);
// for(int i=1;i <= recordStore.getNumRecords();i++){
// recordStore.getRecord(i,recData,0);
// System.out.println("read Record : " + i);
// topRecordScreen.ta1.appendText(i+" "+ strmDataType.readUTF()+"\n");
System.out.println(recordStore.getNumRecords());
if(recordStore.getNumRecords()==2)
{
recordStore.getRecord(1, data, 0);
scr_chooseBus.f1.setText(strmDataType.readUTF());
System.out.println(strmDataType.readUTF());
strmBytes.reset();
recordStore.getRecord(2, data, 0);
scr_chooseBus.f2.setText(strmDataType.readUTF());
System.out.println(strmDataType.readUTF());
strmBytes.reset();
}
strmBytes.close();
strmDataType.close();
}
catch(Exception e){ db(e.toString());}
System.out.println("RMS read successfully!");
}
private void db(String str){
System.err.println("RMS error: " + str);
}
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