Coding⏱️ 2 min read📅 2026-06-03

How to Fix: Compiler error: Method with Objective-C selector conflicts with previous declaration with the same Objective-C selector

Compiler error due to conflicting Objective-C selectors in Swift code.

Quick Answer: Check for duplicate or conflicting method declarations with the same selector in your Swift code.

The 'Compiler error: Method with Objective-C selector conflicts with previous declaration with the same Objective-C selector' error occurs when you're trying to define a method in Swift that has the same name as an existing method, but with a different parameter list or return type. This conflict can arise from several reasons such as re-declaring a function with a different signature, or using the same selector in two different classes.

🛑 Root Causes of the Error

  • Using the same selector in two different classes.
  • Re-declaring a function with a different signature.

🛠️ Step-by-Step Verified Fixes

Method 1: Renaming the Method

  1. Step 1: Identify the conflicting method and its parameters.

Method 2: Changing the Return Type

  1. Step 1: Change the return type of the conflicting method to match the new definition.

🎯 Final Words

To resolve this error, it's essential to carefully review your code and ensure that you're not re-declaring a function with a different signature or using the same selector in two different classes. By following these steps, you should be able to fix the conflict and successfully compile your Swift project.

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❓ Frequently Asked Questions