android 储存一些app配置信息

private void initDB() {		SharedPreferences perferences = PreferenceManager				.getDefaultSharedPreferences(this);		if (!perferences.contains("database")) {			Log.v(TAG, "init database.");			InputStream is = null;			BufferedReader br = null;			try {				is = this.getResources().openRawResource(R.raw.init);				br = new BufferedReader(new InputStreamReader(is, "gb2312"));				String line;				while ((line = br.readLine()) != null) {					dbHelper.exec(line);				}			} catch (Exception e) {				Log.v(TAG, "Failed read init file for ", e);			} finally {				try {					if (br != null && is != null) {						br.close();						is.close();					}				} catch (Exception e) {					Log.v(TAG, "Failed colse file io for ", e);				}			}			SharedPreferences.Editor editor = perferences.edit();			editor.putString("database", "true");			editor.commit();		}	}