?? command_ui.java
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import javax.microedition.midlet.*;import javax.microedition.lcdui.*;public class Command_UI extends MIDlet implements CommandListener{ private Display display; TextBox tb; Command cmd_back; Command cmd_buy; Command cmd_Info; public Command_UI(){ display = Display.getDisplay(this); tb= new TextBox("Check Colors of the Device","Check Color",50,0); cmd_back=new Command("BACK",Command.BACK,1); cmd_buy = new Command("Buy",Command.ITEM,1); cmd_Info= new Command("Info",Command.ITEM,1); tb.addCommand(cmd_back); tb.addCommand(cmd_Info); tb.addCommand(cmd_buy); tb.setCommandListener(this); } public void startApp(){ display.setCurrent(tb); } public void pauseApp(){ } public void destroyApp(boolean unconditional){ } public void commandAction(Command c,Displayable d){ }}?? 快捷鍵說明
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