GetComponent method in unity to access component by C# script

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In many case you have to access component attached with a gameObject then change its properties and value so here is a simple method of doing this
  • Create a C# script and open it
  • first declare a gameObject whose component you want to access.
  • Then declare a component type to reference component for example if you want to access Image component declare Image or want to access AudioSource declare AudioSource.
  • now you can call gameObject.GetComponent<Type>() method for referencing.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class test : MonoBehaviour
{
    public GameObject image_object;
    private Image my_image;
    void Start()
    {
       my_image = image_object.GetComponent<Image>();
    }
}

  • For accessing UI component we have added  using UnityEngine.UI;  namespaces.
  • my_image = image_object.GetComponent<Image>();  this is basic syntax of using get component. you have declare same component type which you pass in GetComponent method. 
  • now you can perform all operations on my_image and this will change image_object because it referencing it.

Accessing multiple component of same type

if a gameObject have multiple component of different type then we can reference to then declare each type and calling GetCompnent method but if same gameObject have same type of multiple component then for referencing them we can use GetComponents method
  • if a gameObject a many AudioSource attached to it then we declare a array of type AudioSource and then we will reference all audioSource by calling GetComponents method

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class test : MonoBehaviour
{
    public GameObject audio_object;
    private AudioSource[] my_audio;

    void Start()
    {
       my_audio = audio_object.GetComponents<AudioSource>();
    }
}


  • my_audio = audio_object.GetComponents<AudioSource>();  assign all audio one by one in it means my_audio[0] will reference to very first then my_audio[1] to second one just below of first and so on.
  • and then you can perform all operations on array my_audio.  




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