2016-03-02 149 views
2

我都跟着谷歌驅動API文件,並根據我對演示,從設備的攝像頭拍攝的圖片代碼,並上傳到Google雲端硬盤。的Android上傳圖像到Google雲端硬盤無壓縮

Google Demo - Takes photos and stores them in Drive

然而,上傳的圖片似乎有小分辨率,它不上傳全分辨率圖像。

如何上傳我用手機相機拍攝的全分辨率圖像?

我的代碼:

public class UploadImgToDrive extends Activity implements ConnectionCallbacks, 
    OnConnectionFailedListener { 

private static final String TAG = "drive-quickstart"; 
private static final int REQUEST_CODE_CAPTURE_IMAGE = 1; 
private static final int REQUEST_CODE_CREATOR = 2; 
private static final int REQUEST_CODE_RESOLUTION = 3; 

private GoogleApiClient mGoogleApiClient; 
private Bitmap mBitmapToSave; 


/** 
* Create a new file and save it to Drive. 
*/ 
private void saveFileToDrive() { 
    // Start by creating a new contents, and setting a callback. 
    Log.i(TAG, "Creating new contents."); 
    final Bitmap image = mBitmapToSave; 
    Drive.DriveApi.newDriveContents(mGoogleApiClient) 
      .setResultCallback(new ResultCallback<DriveContentsResult>() { 

       @Override 
       public void onResult(DriveContentsResult result) { 
        // If the operation was not successful, we cannot do anything 
        // and must 
        // fail. 
        if (!result.getStatus().isSuccess()) { 
         Log.i(TAG, "Failed to create new contents."); 
         return; 
        } 
        // Otherwise, we can write our data to the new contents. 
        Log.i(TAG, "New contents created."); 
        // Get an output stream for the contents. 
        OutputStream outputStream = result.getDriveContents().getOutputStream(); 
        // Write the bitmap data from it. 
        ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream(); 
        image.compress(Bitmap.CompressFormat.JPEG, 100, bitmapStream); 

        try { 
         outputStream.write(bitmapStream.toByteArray()); 
        } catch (IOException e1) { 
         Log.i(TAG, "Unable to write file contents."); 
        } 
        // Create the initial metadata - MIME type and title. 
        // Note that the user will be able to change the title later. 
        MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder() 
          .setMimeType("image/jpeg").setTitle("Android Photo.jpeg").build(); 
        // Create an intent for the file chooser, and start it. 
        IntentSender intentSender = Drive.DriveApi 
          .newCreateFileActivityBuilder() 
          .setInitialMetadata(metadataChangeSet) 
          .setInitialDriveContents(result.getDriveContents()) 
          .build(mGoogleApiClient); 
        try { 
         startIntentSenderForResult(
           intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0); 
        } catch (SendIntentException e) { 
         Log.i(TAG, "Failed to launch file chooser."); 
        } 
       } 
      }); 
} 

@Override 
protected void onResume() { 
    super.onResume(); 
    if (mGoogleApiClient == null) { 
     // Create the API client and bind it to an instance variable. 
     // We use this instance as the callback for connection and connection 
     // failures. 
     // Since no account name is passed, the user is prompted to choose. 
     mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .addApi(Drive.API) 
       .addScope(Drive.SCOPE_FILE) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .build(); 
    } 
    // Connect the client. Once connected, the camera is launched. 
    mGoogleApiClient.connect(); 
} 

@Override 
protected void onPause() { 
    if (mGoogleApiClient != null) { 
     mGoogleApiClient.disconnect(); 
    } 
    super.onPause(); 
} 

@Override 
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) { 
    switch (requestCode) { 
     case REQUEST_CODE_CAPTURE_IMAGE: 
      // Called after a photo has been taken. 
      if (resultCode == Activity.RESULT_OK) { 
       // Store the image data as a bitmap for writing later. 
       mBitmapToSave = (Bitmap) data.getExtras().get("data"); 
      } 
      break; 
     case REQUEST_CODE_CREATOR: 
      // Called after a file is saved to Drive. 
      if (resultCode == RESULT_OK) { 
       Log.i(TAG, "Image successfully saved."); 
       mBitmapToSave = null; 
       // Just start the camera again for another photo. 
       //startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE), 
         //REQUEST_CODE_CAPTURE_IMAGE); 
       finish(); 
      } 
      break; 
    } 
} 

@Override 
public void onConnectionFailed(ConnectionResult result) { 
    // Called whenever the API client fails to connect. 
    Log.i(TAG, "GoogleApiClient connection failed: " + result.toString()); 
    if (!result.hasResolution()) { 
     // show the localized error dialog. 
     GoogleApiAvailability.getInstance().getErrorDialog(this, result.getErrorCode(), 0).show(); 
     return; 
    } 
    // The failure has a resolution. Resolve it. 
    // Called typically when the app is not yet authorized, and an 
    // authorization 
    // dialog is displayed to the user. 
    try { 
     result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION); 
    } catch (SendIntentException e) { 
     Log.e(TAG, "Exception while starting resolution activity", e); 
    } 
} 

@Override 
public void onConnected(Bundle connectionHint) { 
    Log.i(TAG, "API client connected."); 
    if (mBitmapToSave == null) { 
     // This activity has no UI of its own. Just start the camera. 
     startActivityForResult(new Intent(MediaStore.ACTION_IMAGE_CAPTURE), 
       REQUEST_CODE_CAPTURE_IMAGE); 
     return; 
    } 
    saveFileToDrive(); 
} 

@Override 
public void onConnectionSuspended(int cause) { 
    Log.i(TAG, "GoogleApiClient connection suspended"); 
} 


} 

我讀的教程很多,在這裏回答問題,但大多數是過時的,似乎沒有工作。

此外,稍後,我將需要上傳幾張圖片。我怎樣才能做到這一點?

在此先感謝。

回答

0

但是,上傳的圖像似乎分辨率很小,並且不會上傳全分辨率圖像。

This ticket與爲什麼在應用程序中調用Camera操作獲得低分辨率結果類似。他們能夠通過調用URI路徑並將其轉換爲BitMap來獲取原始圖像來解決它。

此外,稍後我需要上傳幾張圖片。我怎樣才能做到這一點?

做法將類似於Android quickstart,我覺得你可以指定一個文件夾,在裏面上傳的所有文件裏面上傳東西..

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