Unity find canvas child and hide it

Question

I am making a screenshot script and when I take shot the whole canvas is being hidden. I just want to hide the camera button which is the child of the canvas and show it again after taking the screenshot. Here is my code.

IEnumerator CaptureIt()
{
    string timeStamp = System.DateTime.Now.ToString("dd-MM-yyyy-HH-mm-ss");
    string fileName = "Screenshot" + timeStamp + ".png";
    string pathToSave = fileName;
    GameObject.Find("Canvas").GetComponent<Canvas>().enabled = false;
    yield return new WaitForEndOfFrame();
    ScreenCapture.CaptureScreenshot(pathToSave);
    yield return new WaitForEndOfFrame();
    GameObject.Find("Canvas").GetComponent<Canvas>().enabled = true;

    Instantiate (blink, new Vector2(0f, 0f), Quaternion.identity);
}

Answer 1

You can access the child of a game object by its index.

You can use a code like this:

GameObject.Find("Canvas").transform.GetChild(index).gameObject.SetActive(false);

index: Index of the child transform between other children of a game object.

I do some changes in your code:

IEnumerator CaptureIt()
{
    string timeStamp = System.DateTime.Now.ToString("dd-MM-yyyy-HH-mm-ss");
    string fileName = "Screenshot" + timeStamp + ".png";
    string pathToSave = fileName;
    GameObject.Find("Canvas").GetComponent<Canvas>().transform.GetChild(0).gameObject.SetActive(false);
    yield return new WaitForEndOfFrame();
    Application.CaptureScreenshot(pathToSave);
    yield return new WaitForEndOfFrame();
    GameObject.Find("Canvas").GetComponent<Canvas>().transform.GetChild(0).gameObject.SetActive(true);

    Instantiate(blink, new Vector2(0f, 0f), Quaternion.identity);
}

And you can use the function with this code StartCoroutine(CaptureIt());

It's a general answer.

But especially for your question, follow these steps:

• Create an empty Game Object

• Click on this empty game object and in Inspector, click on Add Component and create a new C# script

  

• In the script, create 2 functions as below:

  public void Capture()
  {
       StartCoroutine(CaptureIt());
  }
  
  IEnumerator CaptureIt()
  {
      string timeStamp = System.DateTime.Now.ToString("dd-MM-yyyy-HH-mm-ss");
      string fileName = "Screenshot" + timeStamp + ".png";
      string pathToSave = fileName;
      GameObject.Find("Canvas").GetComponent<Canvas>().transform.GetChild(0).gameObject.SetActive(false);
      yield return new WaitForEndOfFrame();
      Application.CaptureScreenshot(pathToSave);
      yield return new WaitForEndOfFrame();
      GameObject.Find("Canvas").GetComponent<Canvas>().transform.GetChild(0).gameObject.SetActive(true);
  
      Instantiate(blink, new Vector2(0f, 0f), Quaternion.identity);
  }
  

• Now, in Hierarchy window, select your button and in Inspector window, in Button component click on Add to List and set your empty game object to this.

  

• Finally, select Capture function to the button

  

I hope it helps you