Allow only numbers to a textfield, and make it an int.

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How do I use a textfield that can only have numbers typed into it? Also, I need all the things typed in to be converted from a string, to an int.

I want a user to be able to type a number between 1 and 70 into the textfield.
I will then feed that number into a loop which will determine how many times the prefab is instantiated.

I’ve searched many times (MANY) aand couldn’t find anything.

Thanks in advance!

convert to int should be this : var intvariable : int = parseInt(stringvariable); and for checking the characters i don't have a good idea but i think you need a loop like this : for (var i = 0; i < stringvariable.Length; i++) { } then compare every character with numbers (a array of 0-9) . that should be another loop ;) i hope it helps you

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3 Answers

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Hi there

Its even simpler!

Assuming your using the new UI!

Just change your Inspector to Debug Mode and Set Integer or Float as the Validation type.

38044-validation.jpg

The string can be easily parsed to int by calling int.Parse(yourString). After you’ve passed it you could also check if its within your range.

code_warrior

Similarly, InputField.ContentType can be set in the inspector in Normal Mode. (I just tried on Unity 2018.3.) https://docs.unity3d.com/ScriptReference/UI.InputField.ContentType.html

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You'll have to change the Content Type to Custom, to be able to modify the Keyboard Type

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In your OnGUI() code look at the string which is being entered into the TextField, and remove any characters that are not digits.

How would I do that? Also, how can I convert the string content into an int? I need it to be compatible with a loop int.

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This has been answered many times; just doing a search for “textfield int” turned up a bunch of answers. Restrict characters in GUI.TextField - Unity Answers Use Int.Parse to convert a string to an int.