datefieldtest.java

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import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.Date;

public class DateFieldTest extends MIDlet implements CommandListener{
    private Form  form;
    private List  startmenu;
    private long  date, time;
    // one day in millis
    private long  dayInMillis=24*60*60*1000;
    private String choices[]={"DATE mode","TIME mode", "DATE_TIME mode"};
    private Command backCommand = new Command("Back", Command.BACK, 1);
    private Command okCommand = new Command("OK", Command.OK, 1);
    private Command exitCommand = new Command("EXIT", Command.EXIT, 1);
    private Display display;	
      
    public DateFieldTest() {
        //create a list as start menu
	startmenu= new List("Chooise a input mode",List.IMPLICIT,choices,null);
	startmenu.addCommand(exitCommand);
	startmenu.setCommandListener(this);
		
        //create a form to manage a gauge
        form= new Form("DateField Test");
        DateField df=new DateField("",DateField.DATE_TIME);
        time=System.currentTimeMillis()%dayInMillis;
        date=System.currentTimeMillis()-time;
        df.setDate(new Date(date+time));
        form.append(df);
        form.addCommand(okCommand);
        form.addCommand(backCommand);
        form.setCommandListener(this);

	//retrieve display object 
	display=Display.getDisplay(this);
    }
    
    public void startApp() throws MIDletStateChangeException {
        display.setCurrent(startmenu);
    }

    /**
     * Pause the MIDlet
     */
    public void pauseApp() {
    }

    /**
     * Called by the framework before the application is unloaded
     */
    public void destroyApp(boolean unconditional) {
        form=null;
        startmenu=null;
	backCommand = null;
        okCommand=null;
	exitCommand = null;
        display=null;
    }

    public void commandAction(Command c, Displayable d) {
        if(d==startmenu && c==List.SELECT_COMMAND) {
            DateField df= (DateField) form.get(0);
            //save the date/time information has been set
            if(df.getInputMode()==DateField.DATE) {
                date=df.getDate().getTime();
            }
            else if(df.getInputMode() == DateField.TIME) {
                time=df.getDate().getTime();
            }
            else {
                time=df.getDate().getTime()%dayInMillis;
                date=df.getDate().getTime()-time;
            }
            //set time and input mode
            df.setLabel(choices[startmenu.getSelectedIndex()]);
            switch(startmenu.getSelectedIndex()) {
            case 0:
                df.setInputMode(DateField.DATE);
                df.setDate(new Date(date));
                break;
            case 1:
                df.setInputMode(DateField.TIME);
                 df.setDate(new Date(time));
                break;
            case 2:
                df.setInputMode(DateField.DATE_TIME);
                 df.setDate(new Date(date+time));
                break;
            }
            display.setCurrent(form);
	}
        else if(d==form && c==okCommand) {//get time
            DateField df= (DateField) form.get(0);
            System.out.println("Time set in millis: "+df.getDate().getTime());
        }
        else if(c==backCommand) {
            display.setCurrent(startmenu);
        }
        else if(c==exitCommand) {
            destroyApp(true);
            notifyDestroyed();
        }
    }
}