GetComponentInChildren doesn't work when instantiating the object

Question

So I have an enemy with a health bar. I have a script that manages enemy health. In the Start function I use GetComponentInChildren to get the Slider component. When I place the enemy in the scene and hit play, it works normally. But when instantiating the enemy object, which is how I want to do it, it doesn't work; the slider variable remains null. The weirdest part is that it worked before in other enemies using the same health script, but I can't figure out why it doesn't work with this one.

The enemy object is set up like this: alt text

And this is my script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class EnemyHealth : MonoBehaviour
 {
     public int maxHealth;
     public int health;
     public Slider healthSlider;
     public bool Hit;
     // Start is called before the first frame update
     void Start()
     {
         healthSlider = GetComponentInChildren<Slider>();
         health = maxHealth;
         healthSlider.maxValue = maxHealth;
         Hit = false;
 
     }
 
     // Update is called once per frame
     void Update()
     {
         healthSlider.value = health;
     }
     public void TakeDamage(int damage)
     {
         health -= damage;
        
     }
 }

Answer 1

Answer by streeetwalker · Sep 05, 2020 at 07:25 AM

Author the reference to the slider using a public variable in the inspector and get rid of GetComponentInChildren - will guarantee the problem is solved.

Barring your taking that approach, are you sure you are attaching the script to the top level object and not the slider?

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GetComponentInChildren doesn't work when instantiating the object

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