Q:

Error while uploading image to server in base 64encoding string

I'm trying to upload data onto a server. The server can accept strings of images. Now I'm using the following code to upload image to the server.
NSData *image = UIImagePNGRepresentation(image);
NSString* pictureDataString = [image base64EncodingWithLineLength:0];
[_request setPostValue:pictureDataString forKey:@"media"];

But I'm getting the following error. Can anyone please help me out here.
"(<class 'google.appengine.api.datastore_errors.BadValueError'>, BadValueError('Property media must be convertible to a Blob instance (Blob() argument should be str instance, not unicode)',), <traceback object at 0x69a1cd63d506f800>)"

A:

just use..
    NSData *image = UIImagePNGRepresentation(image);
    [_request setPostValue:image for key:"media";

it will work.

