J2ME

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Java

CounterItemTest.java：源码内容

							import java.io.*;
import java.util.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
// A simple MIDlet to test the custom counter
// component.
public class CounterItemTest extends MIDlet
                 implements CommandListener {
    private Display display;
    public static final Command exitCommand =
                         new Command( "Exit",
                                      Command.EXIT, 1 ); 
    public CounterItemTest(){
    }
    public void commandAction( Command c,
                               Displayable d ){
        if( c == exitCommand ){
            exitMIDlet();
        }
    }
    protected void destroyApp( boolean unconditional )
                       throws MIDletStateChangeException {
        exitMIDlet();
    }
    public void exitMIDlet(){
        notifyDestroyed();
    }
    public Display getDisplay(){ return display; }
    protected void initMIDlet(){
        Form f = new Form( "用CounterItem实现定时器" );
        f.addCommand( exitCommand );
        f.setCommandListener( this );
        CounterItem counter = new CounterItem();
        counter.setLayout( Item.LAYOUT_CENTER |
                      Item.LAYOUT_NEWLINE_BEFORE |
                      Item.LAYOUT_NEWLINE_AFTER );
        f.append( counter );
        getDisplay().setCurrent( f );
    }
    protected void pauseApp(){
    }
    protected void startApp()
                      throws MIDletStateChangeException {
        if( display == null ){ 
            display = Display.getDisplay( this );
            initMIDlet();
        }
    }
}    

						