sdainifile.java

很好的UI界面源码..还有自己的输入法,可以更换风格.可以学习和使用

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package cn.sda.enterprise;

import java.util.Enumeration;
import java.util.Hashtable;
import javax.microedition.rms.RecordEnumeration;
import javax.microedition.rms.RecordStore;

/**
 *用来记录配置信息，通过RecordStore来处理
 * @author Administrator
 */
public class SDAIniFile {

    private RecordStore rs;
    private Hashtable IniConfigList;

    public SDAIniFile() {
        internalSDAIniFile();
    }

    private void internalSDAIniFile() {
        IniConfigList = new Hashtable();
        IniConfigList.clear();
    }
    //RS打开关闭操作

    public static RecordStore OpenRS(String RsName) {
        return internalOpenRS(RsName);
    }

    private static RecordStore internalOpenRS(String RsName) {
        RecordStore rs = null;
        if (RsName.length() > 32) {
            return null;
        }
        try {
            rs = RecordStore.openRecordStore(RsName, true);
            return rs;
        } catch (Exception e) {
            return null;
        }
    }

    public boolean DeleteRS(String RsName) {
        return internalDeleteRS(RsName);
    }

    private boolean internalDeleteRS(String RsName) {
        if (RsName.length() > 32) {
            return false;
        }
        try {
            RecordStore.deleteRecordStore(RsName);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
    //打开文件

    public void CreateIniFile(String IniFileName) {
        internalCreateIniFile(IniFileName);
    }

    private void internalCreateIniFile(String IniFileName) {
        //打开
        rs = OpenRS(IniFileName);
        ReadFromStream();
    }
    //关闭文件

    public void CloseIniFile() {
        internalCloseIniFile();
    }

    private void internalCloseIniFile() {
        try {
            rs.closeRecordStore();
        } catch (Exception e) {
        }
    }
    //文件配置信息读入Hashtable

    private void ReadFromStream() {
        try {
            RecordEnumeration rem = rs.enumerateRecords(null, null, false);
            for (int i = 0; i < rem.numRecords(); i++) {
                byte[] AllByte;
                AllByte = rem.nextRecord();
                String AllStr = new String(AllByte);
                int ipos = AllStr.indexOf("=");
                if (ipos > -1) {
                    IniConfigList.put(AllStr.substring(0, ipos), AllStr.substring(ipos + 1));
                }
            }
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }

    //写入配置项目
    public void WriteItem(String ItemName, String ItemValue) {
        internalWriteItem(ItemName, ItemValue);
    }

    private void internalWriteItem(String ItemName, String ItemValue) {
        if (IniConfigList.containsKey(ItemName)) {
            //存在就修改
            IniConfigList.remove(ItemName);
            IniConfigList.put(ItemName, ItemValue);
        } else {
            IniConfigList.put(ItemName, ItemValue);
        }
    }
    //删除配置

    public void DeleteItem(String ItemName) {
        internalDeleteItem(ItemName);
    }

    private void internalDeleteItem(String ItemName) {
        while (IniConfigList.containsKey(ItemName)) {
            IniConfigList.remove(ItemName);
        }
    }
    //读取配置项目

    public String ReadItem(String ItemName) {
        return internalReadItem(ItemName);
    }

    private String internalReadItem(String ItemName) {
        if (IniConfigList.containsKey(ItemName)) {
            return (String) IniConfigList.get(ItemName);
        } else {
            return null;
        }
    }
    //写入文件

    public void Flush() {
        internalFlush();
    }

    private void internalFlush() {
        //先删除所有的，再保存
        int Recno = 0;
        RecordEnumeration rem = null;
        try {
            rem = rs.enumerateRecords(null, null, false);
            Recno = rem.numRecords();
        } catch (Exception e) {
        }
        if (rem != null) {
            for (int i = 0;
                    i < Recno;
                    i++) {
                try {
                    int ID = rem.nextRecordId();
                    rs.deleteRecord(ID);
                } catch (Exception e) {
                }
            }
        }
        //重新保存
        String Key;
        String Value;
        Enumeration wenum = IniConfigList.keys();
        while (wenum.hasMoreElements()) {
            Key = (String) wenum.nextElement();
            Value = (String) IniConfigList.get(Key);
            String AllStr = Key + "=" + Value;
            byte[] itembyte = AllStr.getBytes();
            try {
                rs.addRecord(itembyte, 0, itembyte.length);
            } catch (Exception e) {
            }
        }
    }
}