???????? 站在用戶的角度來(lái)思考問(wèn)題，用戶需要的永遠(yuǎn)是方便、快捷的操作功能，所以有些時(shí)候自動(dòng)記錄上次登陸成功的用戶名和密碼也就不可避免了。

???????? 以下代碼實(shí)現(xiàn)了這個(gè)功能，把上次登陸成功的用戶名和密碼記錄在RMS里，因?yàn)镽MS是保存在ROM里的，具有斷電非易失性。

??????? private class TextForm extends Form implements CommandListener {
??????????? Command loginCom = new Command("登陸",Command.OK,0);
??????????? Command backCom = new Command("返回",Command.BACK,1);
??????????? int temp;
??????????? String Myname,Mypassword,s;
??????????? public TextForm(){
??????????????? super("登陸界面");
???????????????? try{
???????????????????? temp = rs.getNumRecords();
???????????????? }catch(Exception e){e.printStackTrace();}
??????????????? if(temp!=0){
??????????????????? try{
?????????????????????? s = decode(rs.getRecord(temp));
??????????????????? }catch(Exception e){e.printStackTrace();}
??????????????????? Myname = s.substring(0,s.indexOf("&"));
??????????????????? s = s.substring(s.indexOf("&")+1);
??????????????????? Mypassword = s;
??????????????????? userName = new TextField("?????? 用戶名 :",Myname,10,TextField.ANY);
??????????????????? passWord = new TextField("????????? 密碼 :",Mypassword,10,TextField.ANY);
??????????????? }else{
??????????????????? userName = new TextField("?????? 用戶名 :","",10,TextField.ANY);
??????????????????? passWord = new TextField("????????? 密碼 :","",10,TextField.ANY);
??????????????? }
??????????????? append(userName);
??????????????? append(passWord);
??????????????? addCommand(loginCom);
??????????????? addCommand(backCom);
??????????????? setCommandListener(this);
??????????????
??????????? }

??????????? public void commandAction(Command c, Displayable g) {
??????????????? if(c == loginCom){
??????????????????? if(userName.getString().length()!=0&&passWord.getString().length()!=0){
???????????????????????
?
???????????????????????
??????????????????????? setCommand("LogonAction",userName.getString()+"&"+passWord.getString());
??????????????????????? getCommand();
??????????????????????? try{
?????????????????????????? client.send(com);
??????????????????????? }catch(Exception ex){
?????????????????????????? ex.printStackTrace();
??????????????????????? }
??????????????????????? gameMode = 4;
??????????????????????? initFlag = true;
??????????????????????? display.setCurrent(r);
???????????????????????
??????????????????????? setCommand("QryRoomsAction",null);
??????????????????????? getCommand();
??????????????????????? try{
?????????????????????????? client.send(com);
??????????????????????? }catch(Exception ex){
?????????????????????????? ex.printStackTrace();
??????????????????????? }
???????????????????????
???????????????????????
??????????????????????? tempName = userName.getString();
??????????????????????? tempPassword = passWord.getString();
??????????????????? }else{
??????????????????????? Alert alert = new Alert("警告","用戶名和密碼不能為空",null,AlertType.ERROR);
??????? ?????? alert.setTimeout(Alert.FOREVER);
??????? ?????? display.setCurrent(alert);
??????????????????? }
??????????????? }else if(c == backCom){
??????????????????????? gameMode = 1;
??????????????????????? display.setCurrent(r);
??????????????? }
??????????? }
??????? }?

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