html5中的video这个标签是引入视频的，通过navigator.getUserMedia去获取摄像头的视频流，所以要在事件里用关闭的代码都不能执行关闭摄像头，只有关闭网页，摄像头才关闭。
以下为html5打开摄像头代码：
<!DOCTYPE html>
<html>
<head>
<meta content="text/htmlcharset=UTF-8" http-equiv="content-type">
<title>Smart Home - Camera</title>
<link href="css/main.css" rel="stylesheet" type="text/css">
<script src="js/jq.js"></script>
<script type="text/javascript">
/*
*/
function init(t){
accessLocalWebCam("camera_box")
}
// Normalizes window.URL
window.URL = window.URL || window.webkitURL || window.msURL || window.oURL
// Normalizes navigator.getUserMedia
navigator.getUserMedia = navigator.getUserMedia ||
navigator.webkitGetUserMedia|| navigator.mozGetUserMedia ||
navigator.msGetUserMedia
function isChromiumVersionLower() {
var ua = navigator.userAgent
var testChromium = ua.match(/AppleWebKit\/.* Chrome\/([\d.]+).* Safari\//)
return (testChromium &&(parseInt(testChromium[1].split('.')[0]) <19))
}
function successsCallback(stream) {
document.getElementById('camera_errbox').style.display = 'none'
document.getElementById('camera_box').src = (window.URL
&&window.URL.createObjectURL) ?
window.URL.createObjectURL(stream) : stream
}
function errorCallback(err) {
}
function accessLocalWebCam(id) {
try {
// Tries it with spec syntax
navigator.getUserMedia({ video: true }, successsCallback, errorCallback)
} catch (err) {
// Tries it with old spec of string syntax
navigator.getUserMedia('video', successsCallback, errorCallback)
}
}
</script>
<style type="text/css">
#camera_errbox{
width:320pxheight:autoborder:1px solid #333333padding:10px
color:#ffftext-align:leftmargin:20px auto
font-size:14px
}
#camera_errbox b{
padding-bottom:15px
}
</style>
</head>
<body onLoad="init(this)" oncontextmenu="return false" onselectstart="return false">
<div>
<div id="mainbox">
<div id="bt_goback"></div>
<div></div><div id="t_iconbox"
class="icon_12"></div><div id="t_text">
<div id="el_title">Camera</div>
<div id="el_descr"></div>
</div>
<div></div>
<div><span
class="sp_title_text">Camera</span><div class="sp_oc
sp_oc_1"></div></div>
<dl id="el_actionbox" style="text-align:center">
<video id="camera_box" autoplay="" src=""></video>
<div id="camera_errbox">
<b>请点击“允许”按钮，授权网页访问您的摄像头！</b>
<div>若您并未看到任何授权提示，则表示您的浏览器不支持Media Capture或您的机器没有连接摄像头设备。</div>
</div>
</dl>
</div>
</div>
</body>
</html>
-——代码结束
难道车是prefab，游戏开始的时候才初始化的？你把车直接拖入场景看看，另外附一段第3人称C#脚本，只需把车的tag改成Player，赋到camera就行了using UnityEngine
using System.Collections
public class ThirdPersonCamera : MonoBehaviour
{
public float distanceAway // distance from the back of the craft
public float distanceUp // distance above the craft
public float smooth // how smooth the camera movement is
private GameObject hovercraft // to store the hovercraft
private Vector3 targetPosition // the position the camera is trying to be in
Transform follow
void Start(){
follow = GameObject.FindWithTag ("Player").transform
}
void LateUpdate ()
{
// setting the target position to be the correct offset from the hovercraft
targetPosition = follow.position + Vector3.up * distanceUp - follow.forward * distanceAway
// making a smooth transition between it's current position and the position it wants to be in
transform.position = Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * smooth)
// make sure the camera is looking the right way!
transform.LookAt(follow)
}
}
需要加载cordova.js方法：
document.addEventListener("deviceready", onDeviceReady, false)
function onDeviceReady() {
pictureSource = navigator.camera.PictureSourceType
destinationType = navigator.camera.DestinationType
}
//相册
function fromCamera()
{
var source = pictureSource.PHOTOLIBRARY
navigator.camera.getPicture(function (imageData) {
setimg(imageData)
}, function (message) {
if (source == pictureSource.CAMERA)
alert('加载照相机出错!' + message)
else
alert('加载相册出错!' + message)
}, {
quality: 50,
destinationType: destinationType.FILE_URI,
sourceType: source
})
}
//拍照
function EditImgPz()
{
navigator.camera.getPicture(function (imageData) {
setimg(imageData)
}, function (message) {
alert(message)
}, {
quality: 50,
destinationType: navigator.camera.DestinationType.FILE_URI,
sourceType: Camera.PictureSourceType.CAMERA,
allowEdit: true,
encodingType: Camera.EncodingType.JPEG,
popoverOptions: CameraPopoverOptions,
saveToPhotoAlbum: true
})
}
