Android Nexus 5代码创建隐藏文件夹停止工作

Question

//代码在Nexus 5上工作了好几个月，但突然间它停止工作，但是//它在所有其他设备上工作正常，即使是那些具有相同操作系统版本的Kitkat。下面是我的//代码。请建议ASAP。检查Manifest中的所有权限，他们没事。

 public static File getPictureStoragePath(int storageLocInt) {
        // TODO Auto-generated method stub
        String path = Environment.getExternalStorageDirectory()
                .getAbsolutePath().toString()
                + "/.DriverMaticsV/"
                + ActiveJourney.JOURNEY_FOLDER_ID
                + "/Picture/";
        Map<String, File> externalLocations = ExternalStorage
                .getAllStorageLocations();
        File sdCard = externalLocations.get(ExternalStorage.SD_CARD);
        File externalSdCard = externalLocations
                .get(ExternalStorage.EXTERNAL_SD_CARD);
        Environment.getExternalStorageState();
        //long count = System.currentTimeMillis();
        if (sdCard == null) {
            path = null;
        } else {
            path = sdCard.getAbsolutePath() + "/.DriverMaticsV/"
                    + ActiveJourney.JOURNEY_FOLDER_ID + "/Picture/";
        }
        if (externalSdCard != null) {
            if (storageLocInt == 0) {
                path = sdCard.getAbsolutePath() + "/.DriverMaticsV/"
                        + ActiveJourney.JOURNEY_FOLDER_ID + "/Picture/";
            } else {
                path = externalSdCard.getAbsolutePath() + "/.DriverMaticsV/"
                        + ActiveJourney.JOURNEY_FOLDER_ID + "/Picture/";
            }
        }
        File file = new File(path);
        if (!file.exists()) {
            file.mkdirs();
        }
        return file;
    }