J2me中的TextBox编辑/TextBox onKey事件

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class TextBoxExample extends MIDlet implements CommandListener {
    private TextBox textBox;
    private Display display;

    public TextBoxExample() {
        textBox = new TextBox("Enter Text", "", 100, TextField.ANY);
        textBox.addCommand(new Command("Exit", Command.EXIT, 0));
        textBox.setCommandListener(this);
        display = Display.getDisplay(this);
    }

    public void startApp() {
        display.setCurrent(textBox);
    }

    public void pauseApp() {}

    public void destroyApp(boolean unconditional) {}

    public void commandAction(Command c, Displayable d) {
        if (c.getCommandType() == Command.EXIT) {
            destroyApp(false);
            notifyDestroyed();
        }
    }

    public void keyPressed(int keyCode) {
        int action = textBox.getGameAction(keyCode);
        if (action == Canvas.FIRE) {
            // 处理回车键按下事件
            String text = textBox.getString();
            // 执行相应的业务逻辑
        }
    }
}