AudioClip.length

# [AudioClip](https://docs.unity3d.com/cn/2019.4/ScriptReference/AudioClip.html).length

public float **length** ;

## 描述

音频剪辑的长度（以秒为单位）。（只读）

```
//Attach an AudioSource component to a GameObject along with this script.
//Click and drag or choose an Audio clip to the AudioClip field in the AudioSource.
//Click and drag or choose a different Audio clip for the Audio Clip 2 field in the Inspector window.

//This script switches between two Audio clips and outputs each of their lengths in the console
//In Play Mode, press the space key to switch between the Audio clips

using UnityEngine;
using UnityEngine.Audio;

public class AudioClipLengthExample : MonoBehaviour
{
    //Make sure your GameObject has an AudioSource component first
    AudioSource m_AudioSource;

//Make sure to set an Audio Clip in the AudioSource component
    AudioClip m_AudioClip;

//Make sure you set an AudioClip in the Inspector window
    public AudioClip m_AudioClip2;

void Start()
    {
        //Fetch the AudioSource from the GameObject
        m_AudioSource = GetComponent<AudioSource>();

//Set the original AudioClip as this clip
        m_AudioClip = m_AudioSource.clip;

//Output the current clip's length
        Debug.Log("Audio clip length : " + m_AudioSource.clip.length);
    }

void Update()
    {
        //Press this key to switch Audio Clips
        if (Input.GetKeyDown(KeyCode.Space))
        {
            SwitchAudio();
        }
    }

void SwitchAudio()
    {
        //If the current Audio clip is the original Audio clip, switch to the second clip
        if (m_AudioSource.clip == m_AudioClip)
        {
            //Switch to the second clip
            m_AudioSource.clip = m_AudioClip2;

//Play the second clip
            m_AudioSource.Play();
        }
        //Otherwise, if the current Audio clip is the second clip, switch back
        else if (m_AudioSource.clip == m_AudioClip2)
        {
            //Switch back to the original Audio clip
            m_AudioSource.clip = m_AudioClip;

//Play the original clip
            m_AudioSource.Play();
        }

//Ouput the length of the current Audio clip
        Debug.Log("Audio clip length : " + m_AudioSource.clip.length);
    }
}
```