ARFoundation Series Explanation-24 Take pictures and save them to the system album

1. How to take screenshots in Unity

1. Use CaptureScreenshot Api, this method can only capture the full screen, generally this method is rarely used.

 Application.CaptureScreenshot("Screenshot.png", 0);  

2. You can customize the scope of interception, but there is a disadvantage that it cannot intercept the screen at the specified level. (For example, if I only want to take a picture, and I don’t need to take a screenshot of the camera button and UI screen, I need to hide the UI interface before taking a screenshot). This method is too cumbersome and rarely used.

    private Texture2D texture2D=null;
    private Rect rect = new Rect(Screen.width * 0f, Screen.height * 0f, Screen.width * 1f, Screen.height * 1f);
    private IEnumerator ScreenshotAsyn()
    {
        if (texture2D != null) Destroy(texture2D);
        texture2D = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.RGB24, false);

        texture2D.ReadPixels(rect, 0, 0);
        texture2D.Apply();
    }

3. Take a screenshot of the specified camera level. (This method is more commonly used)

using UnityEngine;

/// <summary>截屏功能</summary>
public class Screenshot
{
    private s