alerttest.java

Alert的两种模式代码

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

public class AlertTest extends MIDlet implements CommandListener{
	private Display display;
	 private Command cmdExit;
	 private Command cmdAlarm;
	 private Command cmdConfirmation;
	 private Command cmdError;
	 private Command cmdInfo;
	 private Command cmdWarning;
	  private Form form;
	  
	public AlertTest() {
		display = Display.getDisplay(this);
		form = new Form ("Alert 测试");
		cmdExit = new Command ("退出",Command.SCREEN,1);
		cmdAlarm = new Command ("窗口",Command.SCREEN,1);
		cmdConfirmation = new Command ("确认",Command.SCREEN,1);
		cmdError = new Command ("错误",Command.SCREEN,1);
		cmdInfo = new Command ("信息",Command.SCREEN,1);
		cmdWarning = new Command ("警告",Command.SCREEN,1);
		
		form.addCommand(cmdExit);
		form.addCommand(cmdAlarm);
		form.addCommand(cmdConfirmation);
		form.addCommand(cmdError);
		form.addCommand(cmdInfo);
		form.addCommand(cmdWarning);
		form.setCommandListener(this);
		}

	protected void destroyApp(boolean unconditional){
		
	}
	protected void pauseApp (){
		
	}
	protected void startApp() throws MIDletStateChangeException {
		display.setCurrent(form);
		}
	public void commandAction(Command c, Displayable d){
	Alert alert=new Alert("示例");
	if(c == cmdExit) {
		destroyApp(false);
		notifyDestroyed();
		}
	if(c ==cmdAlarm){
		alert.setType(AlertType.ALARM);
		alert.setString("窗口-----J2ME 考试");
		alert.setTimeout(Alert.FOREVER);
		display.setCurrent(alert);
		//AlertType.ALARM.playSound(display);
	}
	
	if(c==cmdConfirmation){
		alert.setType(AlertType.CONFIRMATION);
		alert.setString("确认-----J2ME 考试");
		display.setCurrent(alert);
		//AlertType.CONFIRMATION.playSound(display);
	}
	if(c==cmdError){
		alert.setType(AlertType.ERROR);
		alert.setString("错误-----J2ME 考试");
		display.setCurrent(alert);
		//AlertType.ERROR.playSound(display);
	}
	if(c==cmdInfo){
		alert.setType(AlertType.INFO);
		alert.setString("信息-----J2ME 考试");
		display.setCurrent(alert);
		//AlertType.INFO.playSound(display);
	}
	if(c==cmdWarning){
		alert.setType(AlertType.WARNING);
		alert.setString("警告-----J2ME 考试");
		display.setCurrent(alert);
		//AlertType.WARNING.playSound(display);
		
	}
	}
}