Changing AudioListener at runtime not working:

Hi,

I read in the forums that you can change the overall audio in your scene with the following code:

    public void ChangeVol(float newValue)

   {

        float newVol = AudioListener.volume;

        newVol = newValue;

        AudioListener.volume = newVol;

    }

And then you add a slider component to a canvas and hook up the slider to the "ChangeVol" function, but what happens here is thatas soon as I touch the slider it changes to a fixed value set in the inspector, it doesn't follow the slider up or down.

I also tried using player prefs like so:

    public void changeVolume(float newVolume)

    {

        PlayerPrefs.SetFloat("volume", newVolume);

        AudioListener.volume = PlayerPrefs.GetFloat("volume");

    }

And then adding the line "AudioListener.volume = PlayerPrefs.GetFloat("volume");" on Start on the camera with the audo listener and hooking up the slider but that doesn't do anything.

Does anyone know how to make this work with a UI slider? It has to be the audiolistener that changes volume not the audio sources. Thank you in advance

 

I don't know where u found this codes but... why just not this?

Code (CSharp):

1. public void ChangeVol(float newValue)
2. {
3.     AudioListener.volume = newValue;
4. }

and this:

Code (CSharp):

1. public void changeVolume(float newVolume)
2. {
3.     PlayerPrefs.SetFloat("volume", newVolume);
4.     AudioListener.volume = newVolume;
5. }

If you want to do this with an slider, use onValueChanged event, remember to just record it at PlayerPrefs only when you left the menu, instead of each frame the slider is moving for optimization purposes:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3.  
4. public class VolumeController : MonoBehaviour
5. {
6.     [SerializeField] Slider slider;
7.  
8.     void Awake()
9.     {
10.         AudioListener.volume = PlayerPrefs.GetFloat("volume");
11.         slider.onValueChanged.AddListener(delegate { ChangeVolume(); });
12.     }
13.  
14.     void ChangeVolume() => AudioListener.volume = slider.value;
15.  
16.     //Called from the volume menu button for example
17.     public void OnClick()
18.     {
19.         if (PlayerPrefs.GetFloat("volume") != AudioListener.volume) PlayerPrefs.SetFloat("volume", AudioListener.volume);
20.     }
21. }
22.  

 

You're a lifesaver! Thank you!! It works perfectly with the slider and I like the optimization aspect. Have a great day