AFNetworkingは、POSTリクエストのパラメータとしてJSONを送信

Question

私は、同じ質問に対して複数の回答を行って...しかし、このissue..iを把握することができないが、このエラー

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* +[NSJSONSerialization dataWithJSONObject:options:error:]: Invalid top-level type in JSON write'

を取得しています

私のコードは次のとおりです。

NSDictionary *loginDict=[[NSDictionary alloc] initWithObjectsAndKeys:password.text,@"password",userName.text,@"userName",nil]; 
NSError *error; 
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:loginDict               options:NSJSONWritingPrettyPrinted                error:&error]; 
if (jsonData) { 
     NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; 
} else { 
     NSLog(@"Got an error: %@", error); 
} 


AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; 
manager.requestSerializer = [AFJSONRequestSerializer serializer]; 
[manager.requestSerializer setTimeoutInterval:20]; 
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"]; 
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 
manager.responseSerializer = [AFJSONResponseSerializer serializer]; 
manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments]; 

[manager POST:baseUrlLogin parameters:jsonString 
     success:^(AFHTTPRequestOperation *operation, id responseObject) { 
     NSLog(@"JSON: %@", responseObject); 
} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
     NSLog(@"Error: %@", error); 
}]; 

Answer 1

この

は、直接お電話でloginDictを渡し、チェックしてみてください

manager.requestSerializer = [AFJSONRequestSerializer serializer]; 
/* 
[manager.requestSerializer setTimeoutInterval:20]; 
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"]; 
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 
manager.responseSerializer = [AFJSONResponseSerializer serializer]; 
manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments]; 
*/ 
[manager POST:baseUrlLogin parameters: loginDict 
    success:^(AFHTTPRequestOperation *operation, id responseObject) { 
    NSLog(@"JSON: %@", responseObject); 
} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
    NSLog(@"Error: %@", error); 
}];