untiy之屏幕截图各种方式

来源：互联网发布：中国人口实时数据编辑：程序博客网时间：2024/05/21 20:28

方式一：直接使用unity带的截图函数

Application.CaptureScreenshot(“imagename”)

保存路径：

1. 在PC上保存路径为Application.dataPath（项目所在的路径）

2. 在安卓或者Iphone平台上保存路径为Application.persistentDataPath（游戏里保存数据时放的一个持久数据目录）

优点：简单粗暴

缺点：PC、Mac上正常，但是在移动平台上会出现卡顿现象。

方式二：通过屏幕缓存转化为Png图片进行截图。

IEnumerator GetCapture()

{

//等待所有的摄像机跟GUI渲染完成

yield return new WaitForEndOfFrame();

int width = Screen.width;

int height = Screen.height;

Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false);

//如果 recalculateMipMaps　设置为真，这个贴图的mipmaps就会更新如果 recalculateMipMaps设置为假，你需要调用Apply重新计算它们

tex.ReadPixels(new Rect(0, 0, width, height), 0, 0, true);

byte[] imagebytes = tex.EncodeToPNG();//转化为png图

tex.Compress(false);//对屏幕缓存进行压缩

System.IO.File.WriteAllBytes(Application.dataPath + "/screencapture" + shotID + ".png", imagebytes);//存储png图

}

方式三：截图特定相机，自定义截图内容

public void ShotThree()

{

RenderTexture renderTex = new RenderTexture(Screen.width,Screen.height,0);

if (shotCamera.targetTexture == null)

{

shotCamera.targetTexture = renderTex;

}

//手动渲染相机。

shotCamera.Render();

//所有的渲染将进入激活的RenderTexture，如果活动的RenderTexture为null，所有的东西都被渲染到主窗口

RenderTexture.active = renderTex;

Texture2D screenShot = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);

screenShot.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);//

screenShot.Apply();

// 重置相关参数，以使用camera继续在屏幕上显示

shotCamera.targetTexture = null;

RenderTexture.active = null; // JC: added to avoid errors

Destroy(renderTex);

// 最后将这些纹理数据，成一个png图片文件

byte[] bytes = screenShot.EncodeToPNG();

string filename = Application.dataPath + "/Screenshot.png";

shotID++;

System.IO.File.WriteAllBytes(shotPath + "/screencapture" + shotID + ".png", bytes);

}

扩展方式四：鼠标画区域截取，实现方式同上，核心思想为记录鼠标按下跟抬起的点，算出矩形，读取该矩形范围内的像素保存为png图片。

手机拍照并保存到手机相册路径

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

public class takephoto : MonoBehaviour
{
private int i = 0;
//UI
public GameObject[] btn;
//存储路径
private string Path_save;
//读取路径
private string Path_read;
private string filepath;
private string destination;
void Start()
{
filepath = Application.persistentDataPath + "/拍好玩.png";
}
void OnClick()
{
StartCoroutine(getTexture2d());
}
IEnumerator getTexture2d()
{
//隐藏UI
for (int j = 0; j < btn.Length; j++)
{
btn[j].GetComponentInChildren<UISprite>().enabled = false;
}
//截图操作
yield return new WaitForEndOfFrame();
Texture2D t = new Texture2D(Screen.width, Screen.height,TextureFormat.RGB24,false);
//显示UI
for (int j = 0; j < btn.Length; j++)
{
btn[j].GetComponentInChildren<UISprite>().enabled = true;
}
t.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, true);
byte[] bytes = t.EncodeToPNG();
t.Compress(true);
t.Apply();

//获取系统时间
System.DateTime now = new System.DateTime();
now = System.DateTime.Now;
string filename = string.Format("拍好玩{0}{1}{2}{3}.png", now.Day, now.Hour, now.Minute, now.Second);
//记录每一个截图名字
StreamWriter sw;
FileInfo ft = new FileInfo(filepath);
if (!ft.Exists)
{
sw = ft.CreateText();
}
else
{
sw = ft.AppendText();
}
sw.WriteLine(filename);
sw.Close();
sw.Dispose();
//应用平台判断，路径选择
if (Application.platform == RuntimePlatform.Android)
{
string origin = Path_save;
destination = "/mnt/sdcard/DCIM/拍好玩";
if (!Directory.Exists(destination))
{
Directory.CreateDirectory(destination);
}
destination = destination + "/" + filename;
Path_save = destination;

}
//保存文件
File.WriteAllBytes(Path_save, bytes);
}

}

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