Code inspection: Method referenced in string literal does not have the expected signature

This inspection reports string-based Unity method references that resolve to a method with the wrong signature.

This typically happens in APIs such as Invoke, InvokeRepeating, StartCoroutine, CancelInvoke, and similar Unity APIs that take a method name as a string. The method exists, but its parameters, return type, or static/instance usage do not match what Unity expects.

Example

In this example, InvokeRepeating expects a parameterless instance method, but LaunchProjectile is declared with an int parameter.

                using UnityEngine;

                public class Example : MonoBehaviour
                {
                    void Start()
                    {
                        InvokeRepeating("LaunchProjectile", 1f, 1f);
                    }

                    // Reported: InvokeRepeating expects a parameterless instance method.
                    private void LaunchProjectile(int count)
                    {
                    }
                }
            

                using UnityEngine;

                public class Example : MonoBehaviour
                {
                    void Start()
                    {
                        InvokeRepeating("LaunchProjectile", 1f, 1f);
                    }

                    private void LaunchProjectile()
                    {
                    }
                }
            

Quick-fix

This inspection does not provide a dedicated quick-fix on the string literal itself. The code must be corrected by changing the referenced method signature to the one Unity expects.

26 March 2026