下載管理器與 Google Drive URL

Question

我正在嘗試使用 android DownloadManager 下載存儲在 Google Drive 中的文件。

我從 Google 獲得了登錄令牌，如下所示：

GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(AppConfig.getInstance().get("google_client_id"))
            .requestProfile()
            .requestEmail()
            .build();

我收到一個帶有谷歌驅動器文件 url 的通知，我將它傳遞給 DownloadManager，將令牌傳遞給它：

String cookie = CookieManager.getInstance().getCookie(d.getURL());
            request.addRequestHeader("Cookie",cookie);
            request.addRequestHeader("Authorization", "OAuth " + profile.getToken());
//d is the document object, that contains url, file name, etcc
//Profile is a simple object class that hold the user data taken from sign Google, like token, name, email, etcc

使用簡單的廣播接收器來管理下載結果（ACTION_DOWNLOAD_COMPLETE）。

下載已成功完成，但文件已損壞。 如果我嘗試打開它，設備（和電腦）會給我一個格式錯誤。 該文件包含一個 Google 頁面的 HTML 代碼，該代碼表明存在錯誤，僅此而已。

（我使用的帳戶已啟用以讀取和下載來自此特定驅動器存儲的文檔）

這是使用 DownloadManager 下載 Google Drive 文件的正確方法嗎？ 有可能這樣做嗎？

Answer 1

您也可以通過此方法從 google 下載文件

參考此 Url

https://drive.google.com/uc?id=<FILE_ID>&export=download 

將<FILE_ID>替換為您的可共享文件 ID。

此外，您可以從此解決方案中獲得幫助下載帶有 Android 的文件，並在 ProgressDialog 中顯示進度

您可以使用其中的 doInBackground function 來解決您的查詢。

Answer 2

試試這是否有幫助...

正如@saddamkamal 的回答，使用Google Drive下載URL 。

AsyncTask.execute(new Runnable() {
            @Override
            public void run() {
                DownloadManager downloadmanager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
                Uri uri = Uri.parse("https://drive.google.com/uc?id=<FILE_ID>&export=download");

                DownloadManager.Request request = new DownloadManager.Request(uri);
                request.setTitle("My File");
                request.setDescription("Downloading");
                request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "file.extension");
                downloadmanager.enqueue(request);
            }
        });

Answer 3

由於文件已下載。 檢查 Google 驅動器和 android 中文件的大小。 然后確保您的文件擴展名是正確的。 因為文件擴展名可能不存在，android 會將其視為二進制文件。 現在您的文件擴展名為 android。 安裝適當的應用程序以打開它。 這是更新的代碼

public class MainActivity extends AppCompatActivity {
private Button btn_download;
private long downloadID;



 // using broadcast method
    private BroadcastReceiver onDownloadComplete = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            //Fetching the download id received with the broadcast
            long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
            //Checking if the received broadcast is for our enqueued download by matching download id
            if (downloadID == id) {
                Toast.makeText(MainActivity.this, "Download Completed", Toast.LENGTH_SHORT).show();
            }
        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_download = findViewById(R.id.download_btn);
        // using broadcast method
        registerReceiver(onDownloadComplete,new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                beginDownload();
            }
        });
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        // using broadcast method  
        unregisterReceiver(onDownloadComplete);
    }
    private void beginDownload(){
       String url = "http://speedtest.ftp.otenet.gr/files/test10Mb.db";
       String fileName = url.substring(url.lastIndexOf('/') + 1);
       fileName = fileName.substring(0,1).toUpperCase() + fileName.substring(1);
       File file = Util.createDocumentFile(fileName, context);

       DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url))
                .setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN)// Visibility of the download Notification
                .setDestinationUri(Uri.fromFile(file))// Uri of the destination file
                .setTitle(fileName)// Title of the Download Notification
                .setDescription("Downloading")// Description of the Download Notification
                .setRequiresCharging(false)// Set if charging is required to begin the download
                .setAllowedOverMetered(true)// Set if download is allowed on Mobile network
                .setAllowedOverRoaming(true);// Set if download is allowed on roaming network
        DownloadManager downloadManager= (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
        downloadID = downloadManager.enqueue(request);// enqueue puts the download request in the queue.
      
      // using query method
      boolean finishDownload = false;
      int progress;
      while (!finishDownload) {
        Cursor cursor = downloadManager.query(new DownloadManager.Query().setFilterById(downloadID));
        if (cursor.moveToFirst()) {
          int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
          switch (status) {
            case DownloadManager.STATUS_FAILED: {
              finishDownload = true;
              break;
            }
            case DownloadManager.STATUS_PAUSED:
              break;
            case DownloadManager.STATUS_PENDING:
              break;
            case DownloadManager.STATUS_RUNNING: {
              final long total = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
              if (total >= 0) {
                final long downloaded = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
                progress = (int) ((downloaded * 100L) / total);
                // if you use downloadmanger in async task, here you can use like this to display progress. 
                // Don't forget to do the division in long to get more digits rather than double.
                //  publishProgress((int) ((downloaded * 100L) / total));
              }
              break;
            }
            case DownloadManager.STATUS_SUCCESSFUL: {
              progress = 100;
              // if you use aysnc task
              // publishProgress(100);
              finishDownload = true;
              Toast.makeText(MainActivity.this, "Download Completed", Toast.LENGTH_SHORT).show();
              break;
            }
          }
        }
      }
    }
}