Access array index by string name in Unity

Question

I have a public Image[] to get many Image UI that exist on scene from Unity Editor .

Now i wanna deactivate one or more of them from scene by it's name.

But i can't access this array items by string name of Images .only i can access by int number for index like Images[0]

I tried before Dictionary Class and other solutions on forums but i can't find a way .

How can i do this ?

Well, using Dictionary<string, Image> does sound like the way forward. Where did you get stuck with that? Creating the dictionary, or using it? Are you able to use LINQ? If so, just var dictionary = Images.ToDictionary(image => image.Name); or similar should work... — Jon Skeet
– Jon Skeet, Commented Sep 21, 2016 at 10:26

Programmer · Accepted Answer · 2016-09-21 10:39:36Z

3

For Array:

Use a for loop to loop over the image array then compare the name. If they match, deactivate them.

public Image[] image;

void activateImage(string imageName, bool enable)
{
    for (int i = 0; i < image.Length; i++)
    {
        if (image[i].name == imageName)
        {
            image[i].enabled = enable;//Good for performace
            // OR
            //image[i].gameObject.SetActive(enable);
        }
    }
}

Usage:

Activate

activateImage("nextImage", true);

Deactivate

activateImage("nextImage", false);

For Dictionary:

Dictionary<string, Image> image = new Dictionary<string, Image>();

void activateImage(string imageName, bool enable)
{
    if (image.ContainsKey(imageName))
    {
        image[imageName].enabled = enable;//Good for performace
        // OR
        //image[imageName].gameObject.SetActive(enable);
    }
}

To add Image to Dictionary:

public Image myImage;
image.Add(myImage.name, myImage);

or

image.Add("myImageName", myImage);

answered Sep 21, 2016 at 10:39

Programmer

126k22 gold badges253 silver badges344 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Programmer Over a year ago

@LumbusterTick Thanks and you are right. It is just that I avoid using linq when it is not the only solution in Unity. I use linq a-lot in a normal Windows form App but not in Unity unless if really really required. The reason is performance and memory allocation.

Collectives™ on Stack Overflow

Access array index by string name in Unity

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related