저장소 경로 가져오기 메소드

/**
 * 저장소 경로 반환.
 * @param context {@link Context}
 * @param isGetExternalPath 외부 저장소 반환 여부
 * @return 저장소 경로
 */
public static String getStoragePath(Context context, boolean isGetExternalPath) throws IOException{

   String storagePath = "";

   String internalPath = "";
   String externalPath = "";
   if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){

      // /storage/저장소명/Android/data/패키지명 형식의 File 리스트 가져오기
      File[] packageDirs = context.getExternalFilesDirs("");

      // 우리나라는 드물지만 2개 이상의 저장소를 가진 디바이스가 있어
      // 해당 디바이스는 따로 처리가 필요 할것으로 판단되어 오류 처리 함.
      if (packageDirs.length > 2) {
         throw new IOException("Can not find path. Cause device has more than 2 storage.");
      }

      for (int i = 0; i < packageDirs.length; i++) {

         File packageDir = packageDirs[i];
         if (packageDir != null) {

            String tmpPackagePath = packageDir.getPath();
            String tmpStoragePath = tmpPackagePath.substring(0, tmpPackagePath.indexOf("/Android"));

            if (tmpStoragePath.toLowerCase().contains("emulated")) {
               internalPath = tmpStoragePath;
            } else {
               externalPath = tmpStoragePath;
            }

         }

      }

      if(isGetExternalPath){

         if(externalPath != null && externalPath.length() > 0){
            storagePath = externalPath;
         }else{
            throw new IOException("Can not find path. Cause find storage path is null.");
         }

      }else{

         if(internalPath != null && internalPath.length() > 0){
            storagePath = internalPath;
         }else{
            throw new IOException("Can not find path. Cause find storage path is null.");
         }

      }

   }else{

      try {

         internalPath = Environment.getExternalStorageDirectory().getPath();

         File root = new File("/mnt");
         File[] rootDir = root.listFiles();
         for (File dir : rootDir) {

            if (dir.canWrite()) {

               String tmpPath = dir.getPath();
               if (tmpPath.contains("legacy")){
                  continue;
               }

               if (!internalPath.equals(tmpPath)) {
                  externalPath = tmpPath;
                  break;
               }

            }

         }

      } catch (Exception e) {
         throw new IOException("Can not find path. Cause " + e.getMessage());
      }

      if(isGetExternalPath){

         if(externalPath != null && externalPath.length() > 0){
            storagePath = externalPath;
         }else{
            throw new IOException("Can not find path. Cause find storage path is null.");
         }

      }else{

         if(internalPath != null && internalPath.length() > 0){
            storagePath = internalPath;
         }else{
            throw new IOException("Can not find path. Cause find storage path is null.");
         }

      }

   }

   return storagePath;

}