How to set content-type in AFnetworking
This worked for me!
[requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
This Code Work
objective-c
manager.responseSerializer.acceptableContentTypes=[NSSet setWithObject:@"text/html"];
swift
manager.responseSerializer.acceptableContentTypes=NSSet (object: "text/html") as Set<NSObject>