private String getContent(String filePath){
        File file = new File(filePath);
        FileInputStream fis = null;
        String tempString = null;
        BufferedReader reader = null;
        Log.d(TAG,"file.exists = "+file.exists());
        if (file.exists()){
        try {
            fis = new FileInputStream(file);
            reader = new BufferedReader(new InputStreamReader(fis));
            while ((tempString = reader.readLine()) != null) {
                return  tempString;
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e){
            e.printStackTrace();
        }finally {
            if (fis != null && reader != null){
                try {
                    fis.close();
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        }
        return tempString;
    }