alertscreen.java

PDA餐饮管理系统,在掌上电脑实现的,可以开台,点菜等多功能模块

package junwei;
import javax.microedition.lcdui.*;

/**
 * 提示信息界面
 * @author hong
 *
 */
public class AlertScreen extends Alert{
	private static Alert instance;

	synchronized public static Alert getInstance(String caption,String content){
		if (instance==null)
		{
			instance=new AlertScreen(caption,content);
		}
		else
		{
			instance.setTitle(caption);
			instance.setString(content);
		}
		return instance;
	}
	private AlertScreen(String caption,String content) {
		super(caption);
		setString(content);
		setType(AlertType.INFO);
		setTimeout(Alert.FOREVER);
		this.addCommand(new Command("确定",Command.OK,1));
//		this.setType(AlertType.CONFIRMATION);
	}

}