diamandmidlet.java

俄罗斯方块的JAVA实现

package russiandiamand;

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

public class DiamandMIDlet
    extends MIDlet
{
    private static DiamandMIDlet instance;

    public static DiamandCanvas diamandCanvas = new DiamandCanvas();
    public static HighScoreForm highScoreForm = new HighScoreForm();

    public static Display display;

//    public static String highScore = "0";

    final String recordStoreName = "DiamandScore";

    /** Constructor */
    public DiamandMIDlet()
    {
        instance = this;
        display = Display.getDisplay(this);
    }

    /** Main method */
    public void startApp()
    {
        try
        {
            RecordStore rs = RecordStore.openRecordStore(recordStoreName, false);
            int recordCount = rs.getNumRecords();
            String highScore = new String(rs.getRecord(1));
            highScoreForm.setScore(highScore);
            rs.closeRecordStore();
        }
        catch (RecordStoreException ex)
        {
            System.out.println(ex);
        }
        Display.getDisplay(this).setCurrent(diamandCanvas);
    }

    /** Handle pausing the MIDlet */
    public void pauseApp()
    {
    }

    /**
     * Handle destroying the MIDlet
     * @param unconditional unconditional
     */
    public void destroyApp(boolean unconditional)
    {
        try
        {
            RecordStore.deleteRecordStore(recordStoreName);
        }
        catch (RecordStoreException ex)
        {
            System.out.println(ex);
        }
        try
        {
            RecordStore rs = RecordStore.openRecordStore(recordStoreName, true);
            String highScore = highScoreForm.getScore();
            rs.addRecord(highScore.getBytes(), 0, highScore.length());
            rs.closeRecordStore();
        }
        catch (RecordStoreException ex)
        {
            System.out.println(ex);
        }
    }

    /** Quit the MIDlet */
    public static void quitApp()
    {
        instance.destroyApp(true);
        instance.notifyDestroyed();
        instance = null;
    }

}