inputform.java

j2me源代码

package snake;

import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextField;
import javax.microedition.lcdui.ChoiceGroup;

public class InputForm extends Form
    implements CommandListener {
  Command exit, ok;  //命令按钮
  TextField userName;  //用于接收用户名的文本框
  ChoiceGroup level;  //用于接收用户等级选择信息的选择列表框

  public InputForm( ) {
    super("请输入数据");
    exit = new Command("Exit", Command.EXIT, 1);
    ok = new Command("OK", Command.OK, 2);
    userName = new TextField("Name", "User", 8, TextField.ANY);
    String [] a = {"level 1", "level 2", "level 3", "level 4"};
    level = new ChoiceGroup("游戏等级", ChoiceGroup.EXCLUSIVE, a, null);
    append(userName);
    append(level);
    setCommandListener(this);
    addCommand(exit);
    addCommand(ok);
  }

  public void commandAction(Command command, Displayable displayable) {
    if(command == ok){
      int lv = level.getSelectedIndex() + 1;
      String name = userName.getString();
      SnakeCanvas sc = new SnakeCanvas(lv,name);
      SnakeMIDlet.setCurrent(sc);
    }else if(command == exit){
      SnakeMIDlet.quitApp();
    }
  }
}