Unity/UniRx/TMPro

TMP_DropDownサンプル

ObserveEveryValueChangedを使う場合

using UnityEngine;
using UnityEngine.UI;
using UniRx;
using TMPro;
public class SampleScene : MonoBehaviour
{
    void Start()
    {
        TextMeshProUGUI tmpText = GameObject.Find("Text (TMP)").GetComponent<TextMeshProUGUI>();
        TMP_Dropdown tmpDropdown = GameObject.Find("TmpDropdown").GetComponent<TMP_Dropdown>();
        tmpDropdown.ObserveEveryValueChanged(x => x.value)
            .Subscribe(index => {
                var value = dropdown.options[index].text;
                tmpText.text = value;
            })
            .AddTo(gameObject);
    }
}

AsObservableを使う場合

using UnityEngine;
using UnityEngine.UI;
using UniRx;
using TMPro;
public class SampleScene : MonoBehaviour
{
    void Start()
    {
        TextMeshProUGUI tmpText = GameObject.Find("Text (TMP)").GetComponent<TextMeshProUGUI>();
        TMP_Dropdown tmpDropdown = GameObject.Find("TmpDropdown").GetComponent<TMP_Dropdown>();
        tmpDropdown.onValueChanged.AsObservable()
            .Subscribe(index =>
            {
                var value = tmpDropdown.options[index].text;
                tmpText.text = value;
            })
            .AddTo(gameObject);
    }
}

OnValueChangedAsObservableを作る形式。別途、下にあるようにUnityUIComponentExtensions.csに、OnValueChangedAsObservableを作る

using UnityEngine;
using UnityEngine.UI;
using UniRx;
using TMPro;
public class SampleScene : MonoBehaviour
{
    void Start()
    {
        TextMeshProUGUI tmpText = GameObject.Find("Text (TMP)").GetComponent<TextMeshProUGUI>();
        TMP_Dropdown tmpDropdown = GameObject.Find("TmpDropdown").GetComponent<TMP_Dropdown>();
        tmpDropdown.OnValueChangedAsObservable()
            .Subscribe(index =>
            {
                var value = dropdown.options[index].text;
                tmpText.text = value;
            })
            .AddTo(gameObject);
    }
}

UnityUIComponentExtensions.csへusing TMPro;が追加できない問題

別途、アプリ側のScriptディレクトリに、UnityUIExtensionsを作れば良い。

UnityUIExtensions.cs

sing System;
using TMPro;

namespace UniRx
{
    public static class UnityUIExtensions
    {
        public static IDisposable SubscribeToText(this IObservable<string> source, TextMeshProUGUI text)
        {
            return source.SubscribeWithState(text, (x, t) => t.text = x);
        }

        public static IDisposable SubscribeToText<T>(this IObservable<T> source, TextMeshProUGUI text)
        {
            return source.SubscribeWithState(text, (x, t) => t.text = x.ToString());
        }
#if UNITY_5_3_OR_NEWER
        public static IObservable<int> OnValueChangedAsObservable(this TMP_Dropdown dropdown)
        {
            return Observable.CreateWithState<int, TMP_Dropdown>(dropdown, (d, observer) =>
            {
                observer.OnNext(d.value);
                return d.onValueChanged.AsObservable().Subscribe(observer);
            });
        }
#endif
    }
}

参考：https://github.com/neuecc/UniRx/issues/352

InputFieldのTMPro

TMP_InputField tmpInputField = GameObject.Find("InputField (TMP)").GetComponent<TMP_InputField>();
// 入力してフォーカスを外したら
tmpInputField.onEndEdit.AsObservable().Subscribe(value =>
{
    Debug.Log("value=" + value);
    // tmpInputField.text = value;
});
// 入力中
IObservable<string> onValueChangedObservable = tmpInputField.onValueChanged.AsObservable();
onValueChangedObservable.Subscribe(value =>
{
    Debug.Log("value=" + value);
});

参考：https://qiita.com/su10/items/6d7fd792d4b553454a4f