Question

I downloaded the Drupal-iOS-SDK from github
and I also downloaded AFNetworking files from here.

Then I added the files to my project, but it shows a strange error

Incompatible block pointer types sending ‘void (^)(NSInteger, NSInteger, NSInteger)’ to parameter of type ‘void (^)(NSInteger, long long, long long)’

for this piece of code:

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setUploadProgressBlock:^(NSInteger bytesWritten, NSInteger totalBytesWritten, NSInteger totalBytesExpectedToWrite) {
        NSLog(@"Sent %d of %d bytes", totalBytesWritten, totalBytesExpectedToWrite);
    }];

Does anyone have any idea what this means?

Answer 1

You are sending three NSIntegers as parameters to setUploadProgressBlock when it’s expected one NSUInteger (unsigned integer) and two long long parameters

totalBytesWritten and totalBytesExpectedToWrite need to be of type long long because that’s how they are defined, not `NSInteger’s. Your piece of code should look like:

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
    NSLog(@"Sent %d of %d bytes", totalBytesWritten, totalBytesExpectedToWrite);
}];

You may also want to modify your NSLog accordingly now that it’s set to long long so the compiler doesn’t complain.

NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);