Hint/Error message for InputField (Unity)

Question

With Android/Java you can use something like this

myEditText.setError("This field cannot be blank");

to show an error message/hint for the entered text in an EditText:

Is there anything similar for Unity's InputField in C# or do you have to make your own (e.g. with a text that auto-vanishes after 5 seconds)?

Is there a commonly used design/layout to show a message like that in Unity/Windows games?

Answer 1

No, but you can make your own!

Add a new add a GameObject as a child to the GameObject your InputField is attached to. You can edit this GameObject however much you want, but just adding a UnityEngine.UI.Text should be fine, and make sure that the new GameObject is not active by defualt.

Now add a script to the GameObject with your InputField, and add something like this to it:

public void OnStoppedEditing(string text) {
  if (text == "") { 
    errorWindow.SetActive(true); 
    errorText.text = "This field cannot be blank"; 

  }

}
public void Start() {
   //adds a listener that runs OnStoppedEditing when you stop editing myField
   myField.onEndEdit.AddListener(delegate {OnStoppedEditing(myField); }); 

   myField = gameObject.getComponent<InputField>();
   errorText = errorWindow.getComponent<Text>();
}
public GameObject errorWindow;
Text errorText; 
InputField myField;

make sure that you add "using UnityEngine.UI;" to the top of the script

Save the script and apply errorWindow to the child GameObject that you created!

Please note that I didnt test this code (I dont have access to a pc with unity right now) so if it has any errors just ask :)