unity3d 中控制手机前后摄像头切换

青旅半醒 2022-02-14 15:08 206阅读 0赞

闲话少说，上代码，google上搜来的代码，不过里面有bug，不能顺利切换，下面的代码是已经修改过的，经测试，可以正常运行。

using System;
    using UnityEngine;
    using System.IO;
    using System.Collections;

public class NewBehaviourScript : MonoBehaviour \{  
//public GUITexture mytext;  
public UITexture mytext;

private WebCamTexture frontWebcamTexture = null;

private WebCamTexture rearWebcamTexture = null;

private WebCamDevice\[\] devices;  
\[HideInInspector\]  
public WebCamTexture activeCam;

bool flag = false ;  
static int cameraIndex = 0 ;

/ *按钮控件* /  
public GameObject btn\_shot ;  
public GameObject btn\_change\_camera ;

void Awake () \{

for( int i = 0 ; i < WebCamTexture.devices.Length ; i++ )  
NGUIDebug.Log(WebCamTexture.devices\[i\].name);

devices = WebCamTexture.devices;

string frontCamName = "";

string rearCamName = "";

for(int i=0; i\{

if (devices\[i\].isFrontFacing)

frontCamName = devices\[i\].name;

else

rearCamName = devices\[i\].name;

frontWebcamTexture = new WebCamTexture(frontCamName);

rearWebcamTexture = new WebCamTexture(rearCamName);

frontWebcamTexture.Stop();  
rearWebcamTexture.Stop();  
activeCam = rearWebcamTexture;  
//mytext.material.mainTexture = rearWebcamTexture ;  
mytext.material.SetTexture("\_MainTex", rearWebcamTexture);

activeCam.Play();

void Start()

/ *事件* /  
UIEventListener.Get(btn\_shot).onClick += OnShotButtonClick ;  
UIEventListener.Get(btn\_change\_camera).onClick += OnCameraChangeClick ;

NGUIDebug.Log ("Active camera: " + activeCam);

public bool HasFrontCamera()  
\{

if (Application.isEditor)

return false;

return frontWebcamTexture.deviceName != "";

public void OnShotButtonClick (GameObject go) \{  
SavePhoto() ;  
\}

/ *相机切换* /  
public void OnCameraChangeClick (GameObject go) \{

if (!HasFrontCamera())

return;

activeCam.Stop ();

if (activeCam == frontWebcamTexture)

NGUIDebug.Log ("Switching to rear cam...");

//renderer.material.mainTexture = rearWebcamTexture;  
//mytext.material.mainTexture = rearWebcamTexture ;  
mytext.material.SetTexture("\_MainTex", rearWebcamTexture);  
activeCam = rearWebcamTexture;

else

NGUIDebug.Log ("Switching to front cam...");

//mytext.material.mainTexture = frontWebcamTexture ;  
mytext.material.SetTexture("\_MainTex", frontWebcamTexture);

activeCam = frontWebcamTexture;

NGUIDebug.Log ("... done.");

NGUIDebug.Log("Trying to Play the active WebCamTexture: (" + activeCam + ")");

activeCam.Play();  
\}

public void ShowCamera()  
\{  
//myCameraTexture.guiTexture.enabled = true;  
mytext.enabled = true;  
activeCam.Play();  
NGUIDebug.Log("-------------show--------->>>>>" + mytext) ;

public void HideCamera()  
\{  
NGUIDebug.Log("-------------hide--------->>>>>" + mytext) ;  
//myCameraTexture.guiTexture.enabled = false;  
mytext.enabled = false;  
activeCam.Stop();

public void SavePhoto() {

NGUIDebug.Log("*oh* finally worked!!!") ;

Texture tex = mytext.material.mainTexture;

Texture2D tx = new Texture2D(activeCam.width, activeCam.height) ;  
tx.SetPixels(activeCam.GetPixels());

byte\[\] byte\_photo = tx.EncodeToPNG() ;  
NGUIDebug.Log("\#\#\#\#\#length\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#333333" + byte\_photo.Length) ;  
string photoName = "nimei.png" ;

FileStream fs = new System.IO.FileStream("/mnt/sdcard/DCIM/Camera/nimei.png", System.IO.FileMode.Create);  
fs.Write(byte\_photo,0,byte\_photo.Length);  
fs.Close();  
\}

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