[Solved] Identify the error in this Swift code for sending a POST request with JSON body: var request = URLRequest(url: URL(string: "https://api.example.com")!) request.httpMethod = "POST" let json = ["key":... | iOS Swift

iOS Swift - Networking

Identify the error in this Swift code for sending a POST request with JSON body:

var request = URLRequest(url: URL(string: "https://api.example.com")!)
request.httpMethod = "POST"
let json = ["key": "value"]
request.httpBody = try? JSONSerialization.jsonObject(with: json)

AhttpMethod should be lowercase "post"

BMissing setting Content-Type header to application/json

CUsing JSONSerialization.jsonObject instead of data(withJSONObject:)

DURLRequest initialization is incorrect

Step-by-Step Solution

Solution:

Step 1: Check JSON serialization method
jsonObject(with:) parses JSON data to object; to create JSON data from object, use data(withJSONObject:).
Step 2: Confirm other parts
Content-Type header missing is an issue but not the main error causing failure here.
Final Answer:
Using JSONSerialization.jsonObject instead of data(withJSONObject:) -> Option C
Quick Check:
Wrong JSON method used = D [OK]

Quick Trick: Use data(withJSONObject:) to create JSON data, not jsonObject(with:) [OK]

Common Mistakes:

Confusing jsonObject(with:) with data(withJSONObject:)
Forgetting Content-Type header
Incorrect URLRequest initialization

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Identify the error in this Swift code for sending a POST request with JSON body:

Step 1: Check JSON serialization method

Step 2: Confirm other parts

Final Answer:

Quick Check:

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