Upload to Appengine Blobstore in Android

Question

I'm working on a simple multimedia messaging app for Android, and I was trying to use Google AppEngine's BlobStore as my cloud storage for the various image, video, and audio files that will be transferred. However, all of the examples and such that I've seen for uploading to blobstore assume that I'm doing it via an HTTP form, and so I'm kind of at a loss as to what to do.

I've seen several people asking the same question, but none of them seem to ever get a satisfactory answer. Can I or should I use AppEngine's blobstore in this way, and if so how do I go about doing it?

Thanks, SO.

Bamby

Can you not make a request to your app to get the upload url then send the data in a multipart/form-data encoded post request to that url? – Vary

Try this : [Step by Step Description][1] [1]: #16247234 – Langobard

Answer 1

You could go with something like this:

1. On Google App Engine, create a Web Handler that calling blobstore.create_upload_url() returns an action_POST_URL

2. On Android, post the image to the action_POST_URL using HttpClient and MultipartEntity.

Interstitial

If I follow that method, How do I get the uploaded file URL? is that part of the post response? – Silas

Answer 2

for Java

    BlobstoreService blobstoreService = 
                             BlobstoreServiceFactory.getBlobstoreService();
    String action_POST_URL= blobstoreService.createUploadUrl(redirect_URL);

Philippeville