Double Tap detection Unity3D Games..

TouchDetection.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class TouchDetection : MonoBehaviour {

	bool singleTouch;
	float doubleClickSpeed = 1.5f;
	float timeElapsed = 0.0f;
	void Update(){
		if (!singleTouch) {
			if (Input.GetMouseButtonDown (0)) {
				print (" Single Tap");
				singleTouch = true;
				//timeElapsed += Time.deltaTime;
			}
		} else {
			if (Input.GetMouseButtonDown (0)) {
				print ("Double Tap");
				print ("Time since last Touch" + timeElapsed);
				singleTouch = false;
				timeElapsed = 0f;
			}
		}
			
		if(singleTouch){
			timeElapsed += Time.deltaTime;
		}
		if (timeElapsed > doubleClickSpeed) {
			print ("Values Resetted");
			timeElapsed = 0f;
			singleTouch = false;
		}
			
	}
}