Unity implements screenshots and screenshots based on camera screenshots

using ;
using ;
using UnityEngine;
 
public static class ScreenShotForCamera{
 
 public static void CaptureScreen(string _path = null)
 {
 if (_path == null)
 _path = "";
 
 (_path, 0);
 }
 
 public static Texture2D CaptureScreen(Rect rect, bool _isCreatePhoto = false, string _path = null)
 {
 // Create an empty texture first, the size can be set according to the implementation needs Texture2D screenShot = new Texture2D((int), (int), TextureFormat.RGB24, false);
 
 // Read screen pixel information and store it as texture data. (rect, 0, 0);
 ();
 
 // Then turn these texture data into a png image file if (_isCreatePhoto)
 {
 if(_path == null)
 _path =  + "/";
 
 byte[] bytes = ();
 string filename = _path;
 (filename, bytes);
 (("Take a screenshot: {0}", filename));
 }
 
 // Finally, I return this Texture2d object, so we directly, so this screenshot is shown in the game, of course this is based on my own needs. return screenShot;
 }
 
 //
 public static Texture2D CaptureCamera(ref Camera _camera, Rect _rect, int _destX, int _destY, bool _isCreatePhoto = false, string _path = null)
 {
 RenderTexture renderTexture = new RenderTexture((int)_rect.width, (int)_rect.height, 24, RenderTextureFormat.ARGB32);
 _camera.targetTexture = renderTexture;
 _camera.Render();
 
 // Activate this renderTexture and read pixels from it  = _camera.targetTexture;
 Texture2D screenShot = new Texture2D((int)_rect.width, (int)_rect.height, TextureFormat.ARGB32, false);
 (_rect, _destX, _destY); //Read the image of _rect size from the coordinates (_destX,_destY) ();
 
 //Reset parameters //_camera.targetTexture = null;
  = null;
 //(renderTexture);
 
 //Generate PNG pictures if (_isCreatePhoto)
 {
 if (_path == null)
 _path =  + "/";
 
 byte[] bytes = ();
 string filename = _path;
 (filename, bytes);
 (("Take a screenshot: {0}", filename));
 }
 
 return screenShot;
 }
}

public class ScreenShot : MonoBehaviour 
{

 void OnScreenShotClick()
 {
 //Get the current system time  now = ;
 string times = ();
 //Remove the spaces before and after times = ();
 //Replace the slash with horizontal bar times = ("/", "-");

 string fileName = "ARScreenShot" + times + ".png";
 //Judge whether the platform is an Android platform if ( == )
 {
 //The parameters are screen width screen height texture format whether to use mapping Texture2D texture = new Texture2D(, , TextureFormat.RGB24, false);
 //Read the map (new Rect(0, 0, , ), 0, 0);
 //App screenshot ();
 //Serialize the object byte[] bytes = ();
 //Set the path of the mobile phone folder to be stored string destination = "/sdcard/DCIM/Screenshots";
 //If the folder does not exist if (!(destination))
 {
 //Create this folder (destination);
 }
 string pathSave = destination + "/" + fileName;
 (pathSave, bytes);
 }
 }
}