UI Slider Audio lenght

Questions & Answers
1

Hello, I am making an app for android, and I’m trying to set the value of the slider according to the time of the audio clip. I can move the slider, which forwards or rewinds to moments of the audio clip, but i can not make it move on it’s own without any bugs. When i press play, the audio starts, it moves the slider, but it stutters, like i can hear it 2-3 times at once. I think it’s because the slider.value is set to be modified in an update function. IDK guys, any help is greatly appriciated. Here’s the code:

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class AudioSlider : MonoBehaviour {
	
	public Slider audioSlider;


	
	void Start () {

		audio.Play();

		audioSlider.direction = Slider.Direction.LeftToRight;
		audioSlider.minValue = 0;
		audioSlider.maxValue = audio.clip.length;

	}
	
	
	void Update () {

		audioSlider.value = audio.time;	
      
	}
}

P.S Nothing changes when “Play on awake” on the audiosource is checked/unchecked.

2

Hello,

So I actually use this solution :

public Slider TimeLine;
// Flag to know if we are draging the Timeline handle
private bool TimeLineOnDrag = false;

void Update(){

	if (TimeLineOnDrag) {

		audio.timeSamples = (int)(audio.clip.samples * TimeLine.value);

	}


	} else {
			TimeLine.value = (float)audio.timeSamples / (float)clip audio.clip.samples;

	}

}



// Called by the event trigger when the drag begin
public void TimeLineOnBeginDrag(){

	TimeLineOnDrag = true;

	audio.Pause();

	
}


// Called at the end of the drag of the TimeLine
public void TimeLineOnEndDrag(){

	audio.Play();

	TimeLineOnDrag = false;
}

I pause the audio while I move the handle that’s better for the user’s ears.
Put the script where you have your AudioSource, reference the slider and link the last 2 function to the event trigger (for example OnMouseDown and OnMouseUp).

3

167526-ui-slider-audio-lenght-unity-answers-opera-2020-09.png

it showing error

4

IEnumerator Start()
{
slider.maxValue = audioSource.clip.length;
slider.value = audioSource.time;
while (audioSource.isPlaying)
{
slider.value = audioSource.time;
UnityEngine.Debug.LogError("VALUE IS "+(audioSource.clip.length/audioSource.time));
yield return null;
}
yield return null;
}
You can then attach this function ( OnSliderValueChanged) to the Slider OnValueChanged event.

public void OnSliderValueChanged ()
{
    audioSource.time = slider.value;
}
5

@Dalerjonjon this works for me (2021.3.5f1)

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

public class AudioSlider : MonoBehaviour
{
    public Slider TimeLine;
    private bool TimeLineOnDrag = false;

    void Update()
    {
        if (TimeLineOnDrag)
        {
            GetComponent<AudioSource>().timeSamples = (int)(GetComponent<AudioSource>().clip.samples * TimeLine.value);
        }

        else
        {
            TimeLine.value = (float)GetComponent<AudioSource>().timeSamples / (float)GetComponent<AudioSource>().clip.samples;
        }
    }

    public void TimeLineOnBeginDrag()
    {
        TimeLineOnDrag = true;
        GetComponent<AudioSource>().Pause();
    }

    public void TimeLineOnEndDrag()
    {
        GetComponent<AudioSource>().Play();
        TimeLineOnDrag = false;
    }

}