InputFieldToText

gistfile1.cs

using UnityEngine;
using UniRx;
using UnityEngine.UI;

namespace UniRxSamples
{
    public class InputFieldToText : MonoBehaviour
    {
        [SerializeField]
        private InputField inputField;
        [SerializeField]
        private Text text;

        private void Start()
        {
            inputField.onValueChange
                .AsObservable()
                .Where(word => word.Length > 3)
                .Subscribe(word =>
                {
                    text.text = word;
                });
        }
    }
}