http://zouhuajian01.blog.163.com/blog/static/11769877201251410467309/
-、 放在res中的properties文件的读取,例如对放在assets目录中的setting.properties的读取:
PS:之所以这里只是有读取操作,而没有写的操作,是因为我发现不能对res下的资源文件进行操作,当然包括assets下的properties文件了。如对res资源目录下的properties进行写的操作,那么在你获得properties的FileOutputStream的实例时会报FileNotFoundException的异常。
代码如下(操作写成一个PropertiesUtil工具类):
setting.properties中的代码:
url=http://localhost:8080
PropertiesUtil 工具类:
public class PropertiesUtil {private static Properties urlProps ;public static Properties getProperties ( Context c ){Properties props = new Properties ();try { //方法一:通过activity中的context攻取 setting.properties的FileInputStreamInputStream in = c. getAssets().open(" setting.properties "); //方法二:通过class获取setting.properties的FileInputStream //InputStream in = PropertiesUtill.class. getResourceAsStream("/assets/ setting.properties "));props.load(in);} catch (Exception e1) {// TODO Auto-generated catch blocke1.printStackTrace();}urlProps = props; //测试是否能获得setting.properties中url的值 System . out . println ( urlProps . getProperty ( "url" )); return urlProps ;}}
二、对不是放在res资源目录下的properties文件的操作,如放在activity 的 包(package)目录下的setting.properties文件的读写操作。
setting.properties的代码还是一样的,只是路径不同,而是在activity的包(如:com.jansun.activity)目录下:
PropertiesUtil工具类:url=http://localhost:8080
public class PropertiesUtil {private static Properties urlProps ;private static final path = "/data/data/com.jansun.activity/setting.properties" ;//private FileUtils fu = new FileUtils();public static Properties getProperties(){Properties props = new Properties();try {InputStream in = new FileInputStream(getSettingFile());props.load(in);} catch (Exception e1) {// TODO Auto-generated catch blocke1.printStackTrace();}urlProps = props;return urlProps;}public static void setProperties( String param, String value ){Properties props = new Properties();try {props.load(new FileInputStream( getSettingFile() ));OutputStream out = new FileOutputStream(FileUtils.setting);Enumeration<?> e = props.propertyNames();if(e.hasMoreElements()){while(e.hasMoreElements()){String s = (String)e.nextElement();if(!s.equals(param))props.setProperty(s, props.getProperty(s));}}props.setProperty(param, value);props.store(out, null); //测试是否能够打印出最新的,刚刚修改的url的值//System.out.println("setProperty success: " + props.getProperty(param));} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}private static File getSettingFile(){ File setting = new File ( path ); if (! setting . exists ()) setting . createNewFile (); return setting ; }}
http://bbs.youkuaiyun.com/topics/350188120
http://blog.youkuaiyun.com/howlaa/article/details/18305289