Android 对.properties文件的读取

 





    /**





     * 





     * @param filepath .properties文件的位置





     */





    public  void checkFileExists(String filepath){





        File file = new File(filepath);





        if (file.exists()) {





            String s = PropertiesUtil.readValue(filepath, "allTime");





            if (s!=null) {





                ShowAllTime = Integer.parseInt(s)*60*1000;





            }





            String mqtt = PropertiesUtil.readValue(filepath, "showTime");





            if (mqtt!=null) {





                ShowTime = Integer.parseInt(mqtt)*1000;





            }





        }





    }

/**





 * 对Properties文件的操作





 * <p/>





 * 写入





 * PropertiesUtil mProp = PropertiesUtil.getInstance(this).init();





 * mProp.writeString("name", "Mr Lee");





 * mProp.commit();





 * 读取EG





 * PropertiesUtil mProp = PropertiesUtil.getInstance(this).init();





 * mProp.open();





 * String name = mProp.readString("name", "");





 *





 * @author lei





 */





public class PropertiesUtil {





    private Context mContext;





    private String mPath;





    private String mFile;





    private Properties mProp;





    private static PropertiesUtil mPropUtil = null;





 





    public static PropertiesUtil getInstance(Context context) {





        if (mPropUtil == null) {





            mPropUtil = new PropertiesUtil();





            mPropUtil.mContext = context;





            mPropUtil.mPath = Environment.getExternalStorageDirectory() + "/ExmKeyValue";





            mPropUtil.mFile = "properties.ini";





        }





        return mPropUtil;





    }





 





    public PropertiesUtil setPath(String path) {





        mPath = path;





        return this;





    }





 





    public PropertiesUtil setFile(String file) {





        mFile = file;





        return this;





    }





 





    public PropertiesUtil init() {





        try {





            File dir = new File(mPath);





            if (!dir.exists()) {





                dir.mkdirs();





            }





            File file = new File(dir, mFile);





            if (!file.exists()) {





                file.createNewFile();





            }





            InputStream is = new FileInputStream(file);





            mProp = new Properties();





            mProp.load(is);





            is.close();





        } catch (Exception e) {





            e.printStackTrace();





        }





        return this;





    }





 





    public void commit() {





        try {





            File file = new File(mPath + "/" + mFile);





            OutputStream os = new FileOutputStream(file);





            mProp.store(os, "");





            os.close();





        } catch (Exception e) {





            e.printStackTrace();





        }





        mProp.clear();





    }





 





    public void clear() {





        mProp.clear();





    }





 





    public void open() {





        mProp.clear();





        try {





            File file = new File(mPath + "/" + mFile);





            InputStream is = new FileInputStream(file);





            mProp = new Properties();





            mProp.load(is);





            is.close();





        } catch (Exception e) {





            e.printStackTrace();





        }





    }





 





    public void writeString(String name, String value) {





        mProp.setProperty(name, value);





    }





 





    public String readString(String name, String defaultValue) {





        return mProp.getProperty(name, defaultValue);





    }





 





    public void writeInt(String name, int value) {





        mProp.setProperty(name, "" + value);





    }





 





    public int readInt(String name, int defaultValue) {





        return Integer.parseInt(mProp.getProperty(name, "" + defaultValue));





    }





 





    public void writeBoolean(String name, boolean value) {





        mProp.setProperty(name, "" + value);





    }





 





    public boolean readBoolean(String name, boolean defaultValue) {





        return Boolean.parseBoolean(mProp.getProperty(name, "" + defaultValue));





    }





 





    public void writeDouble(String name, double value) {





        mProp.setProperty(name, "" + value);





    }





 





    public double readDouble(String name, double defaultValue) {





        return Double.parseDouble(mProp.getProperty(name, "" + defaultValue));





    }





    /**





     * 根据key读取value





     *





     * @param filePath





     * @param key





     * @return





     */





    public static String readValue(String filePath, String key) {





        Properties props = new Properties();





        try {





            InputStream in = new BufferedInputStream(new FileInputStream(





                    filePath));





            props.load(in);





            String value = props.getProperty(key);





            if (value.equals("")) {





                return null;





            } else {





                return value;





            }





        } catch (Exception e) {





            e.printStackTrace();





            return null;





        }





    }





 





}