Google Drive 사용하기(3) 다운로드

Google Drive 사용하기(3) 다운로드

다운로드 코드입니다 .

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public InputStream downloadFile(Drive service, File file) {           if (file.getDownloadUrl() != null && file.getDownloadUrl().length() > 0) {             try {                   HttpResponse resp =                         service.getRequestFactory().buildGetRequest(new GenericUrl(file.getDownloadUrl()))                                 .execute();                 return resp.getContent();             } catch (IOException e) {                 // An error occurred.                 e.printStackTrace();                 return null;             }         } else {             // The file doesn't have any content stored on Drive.             return null;         }     }

이건 제가 수정을 해서 사용한 다운로드 코드가 되겠습니다 .

Colored By Color Scripter™

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try {                       result = new ArrayList<File>();                     request = service[0].files().list();                       FileList files = request.execute();                     result.addAll(files.getItems());                     request.setPageToken(files.getNextPageToken());                 } catch (IOException e) {                     System.out.println("An error occurred: " + e);                     request.setPageToken(null);                 }             }             while (request.getPageToken() != null &&                     request.getPageToken().length() > 0)                 ;             for (int i = 0; i < result.size(); i++) {                 if ("Book.db".equals(result.get(i).getTitle().toString())) {                     tempfile = result.get(i);                 }             }               if (tempfile != null) {                   if ("Book.db".equals(tempfile.getTitle().toString())) {                       String path = "data/data/com.iw.booklibrary/databases/Book.db";                     java.io.File file = new java.io.File(path);                       fin = googleUpLoadDownLoad.downloadFile(service[0], tempfile); // InputStream 반환                        try {                         OutputStream outStream = new FileOutputStream(file);                         byte[] buf = new byte[1024];                         int len = 0;                           if (fin != null) {                             while ((len = fin.read(buf)) > 0) {                                 outStream.write(buf, 0, len);                             }                             outStream.close();                             fin.close();                         } else {                             isOk = false;                         }                     } catch (UserRecoverableAuthIOException e) {                         startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);                         dialog.dismiss();                         cancel(true);                     } catch (IOException e) {                         e.printStackTrace();                     }                     isOk = true;                   }             } else {                 isOk = false;             }

구글 드라이브에 있는 파일중에 해당되는 파일이 있으면 파일을 받아와서 로컬에 저장하는 

코드가 되겠습니다 .