java.util.Properties

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java.util.Properties 类可在所有java程序中应用；

在android 中，相对于xml解析更简单；

1.可以以文件形式保存和加载

<span style="font-size:18px;">import java.io.FileInputStream;  import java.io.FileOutputStream;  import java.util.Properties;    public Properties loadConfig(Context context, String file) {  Properties properties = new Properties();  try {  FileInputStream s = new FileInputStream(file);  properties.load(s);  } catch (Exception e) {  e.printStackTrace();  }  return properties;  }    public void saveConfig(Context context, String file, Properties properties) {  try {  FileOutputStream s = new FileOutputStream(file, false);  properties.store(s, "");  } catch (Exception e){  e.printStackTrace();  }  }  </span>

<span style="font-size:18px;">Properties prop = new Properties();  prop.put("prop1", "abc");  prop.put("prop2", 1);  prop.put("prop3", 3.14);  saveConfig(this, "/sdcard/config.dat", prop);  </span>

<span style="font-size:18px;">Properties prop = loadConfig(this, "/sdcard/config.dat");  String prop1 = prop.get("prop1");  </span>

2.直接从raw文件夹中的*.properties文件中读取（以id描述符打开raw资源文件）

<span style="font-size:18px;">private Properties loadProperties() {        //        InputStream in = null;        //        Properties props = null;        //        try {        //            in = getClass().getResourceAsStream(        //                    "/org/androidpn/client/client.properties");        //            if (in != null) {        //                props = new Properties();        //                props.load(in);        //            } else {        //                Log.e(LOGTAG, "Could not find the properties file.");        //            }        //        } catch (IOException e) {        //            Log.e(LOGTAG, "Could not find the properties file.", e);        //        } finally {        //            if (in != null)        //                try {        //                    in.close();        //                } catch (Throwable ignore) {        //                }        //        }        //        return props;        Properties props = new Properties();        try {            int id = context.getResources().getIdentifier("androidpn", "raw",                    context.getPackageName());            props.load(context.getResources().openRawResource(id));        } catch (Exception e) {            Log.e(LOGTAG, "Could not find the properties file.", e);            // e.printStackTrace();        }        return props;    }</span>

根据key取
props.getProperty("key", "default-value");

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