optionsform.java

有关手机游戏网络对战方面的源码

package unicoco;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemStateListener;
import javax.microedition.lcdui.StringItem;
import javax.microedition.lcdui.TextField;
import javax.microedition.rms.InvalidRecordIDException;
import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordStoreException;
import javax.microedition.rms.RecordStoreFullException;
import javax.microedition.rms.RecordStoreNotFoundException;
import javax.microedition.rms.RecordStoreNotOpenException;

public class OptionsForm extends Form implements CommandListener,
		ItemStateListener {
	private boolean nameChanged;
	static OptionsForm instance;
	public void itemStateChanged(Item item) {
		if (item == get(0)) {
			nameChanged=true;
		}
	}
	MusicItem mi;
	public void commandAction(Command c, Displayable d) {
		if (c.getLabel().equals("ClearData")) {
			writeWFData(rs, -1, true);
			((StringItem) get(1)).setText(String.valueOf(0));
			((StringItem) get(2)).setText(String.valueOf(0));
		} else if (c.getLabel().equals("Back")) {
			if(nameChanged){
//				System.out.println("changed name");
				writeUserName(rs, ((TextField)get(0)).getString(), false);
				nameChanged=false;
			}
			try {
				rs.closeRecordStore();
			} catch (RecordStoreNotOpenException e) {
//				e.printStackTrace();
			} catch (RecordStoreException e) {
//				e.printStackTrace();
			}
			if (mi.changed) {
				byte[] musicTemp = { mi.selection };
				try {
					RecordStore rs = RecordStore.openRecordStore("UserInf", false);
					OptionsForm.setMusic(rs, false, musicTemp);
					MIDGame.game.music = mi.selection;
				} catch (RecordStoreFullException e) {
					// TODO Auto-generated catch block
					// e.printStackTrace();
				} catch (RecordStoreNotFoundException e) {
					// TODO Auto-generated catch block
					// e.printStackTrace();
				} catch (RecordStoreException e) {
					// TODO Auto-generated catch block
					// e.printStackTrace();
				}
			}
			MIDGame.display.setCurrent(MainMenu.getInstance());
		}
	}

	private final static void shortToBytes(short res, byte[] des) {
		des[0] = (byte) (0x00ff & (res >> 8));
		des[1] = (byte) (0x00ff & (res));
	}

	private final static short bytesToshort(byte[] res) {
		short result = 0;
		result = (short) (res[0] & 0x00ff);
		result = (short) (((result << 8) & 0xff00) + (res[1] & 0x00ff));
		return result;
	}

	public final static void readWFData(RecordStore rs, short[] wfs) {
		byte[] result = null;
		try {
			result = rs.getRecord(2);
			wfs[0] = bytesToshort(result);
			result = rs.getRecord(3);
			wfs[1] = bytesToshort(result);
		} catch (RecordStoreNotOpenException e) {
//			e.printStackTrace();
		} catch (InvalidRecordIDException e) {
//			e.printStackTrace();
		} catch (RecordStoreException e) {
//			e.printStackTrace();
		}

	}
//Record ID 1=name 2=wins 3=fails
	public final static void writeWFData(RecordStore rs, int recordID,
			boolean clear) {
		byte[] result = null;
		short win = 0, fail = 0;
		try {
			if (recordID == 0) {
				result = new byte[2];
				shortToBytes(win, result);
				rs.addRecord(result, 0, result.length);
				shortToBytes(fail, result);
				rs.addRecord(result, 0, result.length);
				return;
			} else if (!clear) {
				result = rs.getRecord(recordID);
				short tempResult = bytesToshort(result);
				if (tempResult < Short.MAX_VALUE) {
					tempResult++;
				}
				shortToBytes(tempResult, result);
				rs.setRecord(recordID, result, 0, result.length);
			} else {
				result = new byte[2];
				shortToBytes((short) 0, result);
				rs.setRecord(2, result, 0, result.length);
				rs.setRecord(3, result, 0, result.length);
			}
		} catch (RecordStoreNotOpenException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreFullException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		}
	}

	public final static String readUserName(RecordStore rs) {
		byte[] tempResult = null;
		String result = null;
		try {
			tempResult = rs.getRecord(1);
		} catch (RecordStoreNotOpenException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (InvalidRecordIDException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO Auto-generated czatch block
//			e.printStackTrace();
		}
		ByteArrayInputStream bis = new ByteArrayInputStream(tempResult);
		DataInputStream dis = new DataInputStream(bis);
		try {
			result = dis.readUTF();
			dis.close();
			bis.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		}
		return result;
	}

	final public static  void writeUserName(RecordStore rs, String newName,
			boolean first) {
		byte[] baUserName = null;
		ByteArrayOutputStream bos = new ByteArrayOutputStream();
		DataOutputStream dos = new DataOutputStream(bos);
		try {
			dos.writeUTF(newName);
			baUserName = bos.toByteArray();
			dos.close();
			bos.close();
			if (first) {
				rs.addRecord(baUserName, 0, baUserName.length);
			} else {
				rs.setRecord(1, baUserName, 0, baUserName.length);
			}
		} catch (Exception e) {
//			e.printStackTrace();
		}
	}

	RecordStore rs;

	public OptionsForm() {
		super("Options");
		setItemStateListener(this);
		setCommandListener(this);
		addCommand(new Command("Back", Command.CANCEL, 1));
		addCommand(new Command("ClearData", Command.SCREEN, 2));
		TextField userName = new TextField("UserName : ", "", 8, TextField.ANY);
		userName.setLayout(Item.LAYOUT_CENTER | Item.LAYOUT_NEWLINE_AFTER);
		StringItem win = new StringItem("Win : ", "", Item.HYPERLINK);
		StringItem fail = new StringItem("Fail : ", "", Item.BUTTON);
		mi=new MusicItem();
		try {
			rs = RecordStore.openRecordStore("UserInf", true,
					RecordStore.AUTHMODE_PRIVATE, false);
		} catch (RecordStoreFullException e) {
//			rs = null;
//			e.printStackTrace();
		} catch (RecordStoreNotFoundException e) {
//			rs = null;
//			e.printStackTrace();
		} catch (RecordStoreException e) {
//			rs = null;
//			e.printStackTrace();
		}
		//try {

/*
 *转到MIDGame中去执行
 *  			if (rs.getNumRecords() == 0) {
				//建立Record
				writeUserName(rs, "Player", true);
				writeWFData(rs, 0, false);
			}
 * 
 */
 
			userName.setString(readUserName(rs));
			short[] winAndFail = new short[2];
			readWFData(rs, winAndFail);
			win.setText(String.valueOf(winAndFail[0]));
			fail.setText(String.valueOf(winAndFail[1]));
			append(userName);
			//win.setLayout(Item.LAYOUT_CENTER |Item.LAYOUT_NEWLINE_AFTER);
			append(win);
			append(fail);
			mi.setLayout(Item.LAYOUT_CENTER |Item.LAYOUT_NEWLINE_BEFORE);
			append(mi);
		//} catch (RecordStoreNotOpenException e) {
			// TODO Auto-generated catch block
			//e.printStackTrace();
		//}
	}
	protected void showNotify1(){
		try {
			rs = RecordStore.openRecordStore("UserInf", true,
					RecordStore.AUTHMODE_PRIVATE, false);
		} catch (RecordStoreFullException e) {
//			e.printStackTrace();
		} catch (RecordStoreNotFoundException e) {
//			e.printStackTrace();
		} catch (RecordStoreException e) {
//			e.printStackTrace();
		}
		((TextField)get(0)).setString(readUserName(rs));
		//System.out.println(readUserName(rs));
		short[] winAndFail = new short[2];
		readWFData(rs, winAndFail);
		((StringItem)get(1)).setText(String.valueOf(winAndFail[0]));
		((StringItem)get(2)).setText(String.valueOf(winAndFail[1]));
	}
//	0=off 1=on
	public static void setMusic(RecordStore rs,boolean first,byte[] isOpen){
		if(first){
			byte[] on={1};
			try {
				rs.addRecord(on, 0, on.length);
			} catch (RecordStoreNotOpenException e) {
				// TODO Auto-generated catch block
//				e.printStackTrace();
			} catch (RecordStoreFullException e) {
				// TODO Auto-generated catch block
//				e.printStackTrace();
			} catch (RecordStoreException e) {
				// TODO Auto-generated catch block
//				e.printStackTrace();
			}
			return;
		}
		try {
			rs.setRecord(4,isOpen,0,isOpen.length);
		} catch (RecordStoreNotOpenException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (InvalidRecordIDException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreFullException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		}
	}
	public final static Displayable getInstance(){
		if(OptionsForm.instance==null){
			OptionsForm.instance=new OptionsForm();
		}
		instance.showNotify1();
		return OptionsForm.instance;
	}
	public final static byte[] getMusicState(RecordStore rs){
		byte[] temp=null;
		try {
			temp=rs.getRecord(4);
		} catch (RecordStoreNotOpenException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (InvalidRecordIDException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		} catch (RecordStoreException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		}
		return temp;
	}
}