JSONSerialization

Swift & SwiftUI

Fix: Cannot Convert JSON String to Dictionary in Swift

Learn how to parse a JSON string into a dictionary in Swift using JSONSerialization or Codable, avoiding type mismatch errors and runtime…

November 6, 2026

Independent, tested fixes for Xcode errors, Swift & SwiftUI, App Store Connect, iOS and macOS problems. Built from real error messages and Apple’s own release notes.

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JSONSerialization

Fix: Cannot Convert JSON String to Dictionary in Swift