파일 복사 붙여넣기 메소드

/**
 * 파일을 복사하여 붙여넣기.
 * @param copyPath 복사 경로
 * @param copyFileName 복사 파일명(확장자 포함)
 * @param pastePath 붙여넣기 경로
 * @param pasteFileName 붙여넣기 파일명(확장자 포함)
 * @param isOverWrite 붙여넣기 경로에 같은 파일명을 가진 파일이 있을 경우 덮어쓰기 여부
 * @param isDeleteCopyFile 복사 파일 지우기 여부
 * @return true : 성공, false : 실패
 */
   @RequiresPermission(allOf = {
           android.Manifest.permission.READ_EXTERNAL_STORAGE,
           android.Manifest.permission.WRITE_EXTERNAL_STORAGE
   })
public static boolean fileCopyPaste(String copyPath, String copyFileName, String pastePath, String pasteFileName, boolean isOverWrite, boolean isDeleteCopyFile) throws IOException{

   if(copyPath == null || copyPath.length() <= 0 ||
         copyFileName == null || copyFileName.length() <= 0){
       throw new IllegalArgumentException("Copy path or file name is null.");
   }

   if(pastePath == null || pastePath.length() <= 0 ||
               pasteFileName == null || pasteFileName.length() <= 0){
       throw new IllegalArgumentException("Paste path or file name is null.");
   }

   boolean isSuccess = false;

   File copy = new File(copyPath, copyFileName);
   File paste = new File(pastePath, pasteFileName);
   if(!copy.exists()){ 
       throw new IOException("Copy file is not exists.");
   }else{

           if(!copy.isFile()){ 
               throw new IOException("Copy file is not file.");
           }

       }

   File pasteFolder = paste.getParentFile();
   if(!pasteFolder.exists()){ 
           isSuccess = pasteFolder.mkdirs();
   }else{

       if(paste.exists()){ 

           if(isOverWrite){ 
                   isSuccess = paste.delete();
               }else{

               File[] pasteFolderFileList = pasteFolder.listFiles(new FileFilter() {

                       @Override
                       public boolean accept(File pathname) {
                           return pathname.isFile();
                       }

                   });

               boolean hasReName = false;
               int num = 1;
               String noExtensionPasteFileName = pasteFileName.substring(0, pasteFileName.lastIndexOf("."));
               String pasteFileExtension = pasteFileName.substring(pasteFileName.lastIndexOf("."));
               String reName = noExtensionPasteFileName + " (" + String.valueOf(num++) + ")" + pasteFileExtension;
               for(int i = 0; i < pasteFolderFileList.length; i++){

                   File pasteFolderFile = pasteFolderFileList[i];
                       if(reName.equals(pasteFolderFile.getName())){
                           hasReName = true;
                       }

                       if(i == (pasteFolderFileList.length - 1)){

                           if(hasReName){
                               hasReName = false;
                               reName = noExtensionPasteFileName + " (" + String.valueOf(num++) + ")" + pasteFileExtension;
                               i = -1;
                           }

                       }

                   }

                   paste = new File(pasteFolder, reName);

               isSuccess = true;

               }

           }else{
           isSuccess = true;
           }

       }

       if(!isSuccess){
           throw new IOException("Failed create paste path.");
       }
       isSuccess = false;

       BufferedInputStream bis = null;
       BufferedOutputStream bos = null;
   try {

           bis = new BufferedInputStream(new FileInputStream(copy));
           bos = new BufferedOutputStream(new FileOutputStream(paste));

      byte[] readByte = new byte[4096];
      int data = 0;
      while((data = bis.read(readByte, 0, 4096)) != -1) {
               bos.write(readByte, 0, data);
      }
      bos.flush();

      if(isDeleteCopyFile){
         isSuccess = copy.delete();
      }else{
         isSuccess = true;
      }

   } catch (IOException e) {
           throw new IOException(e);
   } catch (Exception e) {
       throw new IOException(e);
       } finally {

      try{

               bis.close();

      }catch (Exception e){
         // ignore
      }

      try{

               bos.close();

      }catch (Exception e){
         // ignore
      }

   }

   return isSuccess;

}