Unity Button without Image.

Touchable.cs

// https://stackoverflow.com/questions/36888780/how-to-make-an-invisible-transparent-button-work
// file Touchable.cs
// Correctly backfills the missing Touchable concept in Unity.UI's OO chain.

using UnityEngine;
using UnityEngine.UI;
#if UNITY_EDITOR
using UnityEditor;
[CustomEditor(typeof(Touchable))]
public class Touchable_Editor : Editor
     { public override void OnInspectorGUI(){} }
#endif
public class Touchable:Text
     { protected override void Awake() { base.Awake();} }