import javax.microedition.lcdui.*;import javax.microedition.midlet.MIDlet; //TextBox事例,made by sword2008public class TextBoxDemo extends MIDlet implements CommandListener{//private private Display display; private ChoiceGroup types; private ChoiceGroup options; private Form mainform; private Command exitcmd=new Command("EXIT",Command.EXIT,1); private Command backcmd=new Command("BACK",Command.BACK,1); private Command screencmd=new Command("SCREEN",Command.SCREEN,1); private boolean firstTime; //label String textlabels[]={"字","邮箱","NUMBRIC","DECIMAL","电话","网址",}; int textBoxType[]={TextField.ANY,TextField.EMAILADDR,TextField.NUMERIC,      TextField.DECIMAL,TextField.PHONENUMBER,TextField.URL};   public TextBoxDemo(){  display=Display.getDisplay(this);  firstTime=true;   }          public void startApp(){ if(firstTime) {mainform=new Form("选择一种textBox类型"); mainform.append("以下为选项:"); types=new ChoiceGroup("选择",Choice.EXCLUSIVE,textlabels,null); mainform.append(types); //第二选项 String optionsString[]={"密码形式","移动字符"}; options=new ChoiceGroup("选择",Choice.MULTIPLE,optionsString,null); mainform.append(options); mainform.addCommand(screencmd); mainform.addCommand(exitcmd); mainform.setCommandListener(this); firstTime=false; }  display.setCurrent(mainform);   }   public void pauseApp(){}//按键监听  public void commandAction(Command cmd,Displayable dis)  {if(cmd==exitcmd){  destroyApp(false);  notifyDestroyed();  }   else if(cmd==screencmd){  int index=types.getSelectedIndex();  String title=textlabels[index];  int choiceType=textBoxType[index];    boolean flag[]=new boolean[2];  options.getSelectedFlags(flag);  if(flag[0]){  choiceType |=TextField.PASSWORD;}  TextBox textBox=new TextBox(title,"",50,choiceType);  if(flag[1]){   textBox.setTicker(new Ticker("TextBox"+title));}  textBox.addCommand(backcmd);  textBox.setCommandListener(this);  display.setCurrent(textBox);    }    else if(cmd==backcmd){}   }   public void destroyApp(boolean unkowmn){} } /*注意:如果出现的错误:Project settings savedBuilding "TextBoxDemo"f:\WTK22\apps\TextBoxDemo\src\TextBoxDemo.java:5: TextBoxDemo is not abstract and does not override abstract method commandAction(javax.microedition.lcdui.Command,javax.microedition.lcdui.Displayable) in javax.microedition.lcdui.CommandListenerpublic class TextBoxDemo extends MIDlet implements CommandListener       ^1 errorcom.sun.kvem.ktools.ExecutionExceptionBuild failed 一定是CommandAction出现问题,检查一下两个形式参数(Command cmd,Displayable dis)注意是Displayable而不是Display*/  

评论