unity piano game trouble with playback of recorded notes - unity3d

Question

i have a piano app in unity and i am using an ArrayList to add notes and then playing it back and it workes mostly but the playback method since it activates when playMode is true, it continues on a loop, i need to know how i can use an if statement to check if all the recorded notes have been played and if they have then the loop should break. i really need help.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class NotePlay: MonoBehaviour
{
public Button record, play;
public bool recordMode = false;
public bool playMode = false;
Animator anim;
public AudioClip noteA;
public AudioClip noteB;
public AudioClip noteC;
public AudioClip noteD;
public AudioClip noteE;
public AudioClip noteF;
public AudioClip noteG;
public AudioSource audio;
public int count = 0;
// Use this for initialization
public ArrayList notes;
void Start()
{
anim = gameObject.GetComponent<Animator>();
audio = GetComponent<AudioSource>();
notes = new ArrayList();
Button rec = record.GetComponent<Button>();
Button pl = play.GetComponent<Button>();
record.onClick.AddListener(()=>{ recordMode = !recordMode; });
play.onClick.AddListener(() => { playMode = !playMode; recordMode =
false; });
}
void Playback()
{
bool flag = true;
for (int i = 0; i < notes.Count && flag; i++)
{
char c = (char)notes[i];
System.Threading.Thread.Sleep(1000);
PlayNote(c);
print(c);
// i want the recorded notes to only play once
if ()
{
}
}
}
void PlayNote(char note)
{
if (note == 'a')
{
//anim.SetTrigger("A");
GameObject.Find("Sphere_A").GetComponent<AudioSource>
().PlayOneShot(noteA);
GameObject.Find("Sphere_A").GetComponent<Animator>
().SetTrigger("A");
print("a");
}
if (note == 'b')
{
//anim.SetTrigger("B");
GameObject.Find("Sphere_B").GetComponent<AudioSource>
().PlayOneShot(noteB);
GameObject.Find("Sphere_B").GetComponent<Animator>
().SetTrigger("B");
print("b");
}
if (note == 'c')
{
///anim.SetTrigger("C");
GameObject.Find("Sphere_C").GetComponent<AudioSource>
().PlayOneShot(noteC);
GameObject.Find("Sphere_C").GetComponent<Animator>
().SetTrigger("C");
}
if (note == 'd')
{
//anim.SetTrigger("D");
GameObject.Find("Sphere_D").GetComponent<AudioSource>
().PlayOneShot(noteD);
GameObject.Find("Sphere_D").GetComponent<Animator>
().SetTrigger("D");
}
if (note == 'e')
{
//anim.SetTrigger("E");
GameObject.Find("Sphere_E").GetComponent<AudioSource>
().PlayOneShot(noteE);
GameObject.Find("Sphere_E").GetComponent<Animator>
().SetTrigger("E");
}
else if (note == 'f')
{
// anim.SetTrigger("F");
GameObject.Find("Sphere_F").GetComponent<AudioSource>
().PlayOneShot(noteF);
GameObject.Find("Sphere_F").GetComponent<Animator>
().SetTrigger("F");
}
else if (note == 'g')
{
//anim.SetTrigger("G");
GameObject.Find("Sphere_G").GetComponent<AudioSource>
().PlayOneShot(noteG);
GameObject.Find("Sphere_G").GetComponent<Animator>
().SetTrigger("G");
}
}
// Update is called once per frame
void Update()
{
if (recordMode == true)
{
if (Input.GetKeyDown(KeyCode.A)) {notes.Add('a'); PlayNote('a'); }
if (Input.GetKeyDown(KeyCode.B)) {notes.Add('b'); PlayNote('b'); }
if (Input.GetKeyDown(KeyCode.C)) {notes.Add('c'); PlayNote('c'); }
if (Input.GetKeyDown(KeyCode.D)) {notes.Add('d'); PlayNote('d'); }
if (Input.GetKeyDown(KeyCode.E)) {notes.Add('e'); PlayNote('e'); }
if (Input.GetKeyDown(KeyCode.F)) {notes.Add('f'); PlayNote('f'); }
if (Input.GetKeyDown(KeyCode.G)) {notes.Add('g'); PlayNote('g'); }
}
else
{
if (Input.GetKeyDown(KeyCode.A)) { PlayNote('a'); }
if (Input.GetKeyDown(KeyCode.B)) { PlayNote('b'); }
if (Input.GetKeyDown(KeyCode.C)) { PlayNote('c'); }
if (Input.GetKeyDown(KeyCode.D)) { PlayNote('d'); }
if (Input.GetKeyDown(KeyCode.E)) { PlayNote('e'); }
if (Input.GetKeyDown(KeyCode.F)) { PlayNote('f'); }
if (Input.GetKeyDown(KeyCode.G)) { PlayNote('g'); }
}
if (playMode == true )
{
Playback();
}
}
}

Answer 1

You may want to specify that the AudioSource don't have to loop the sound. Add this line to your Start method :
void Start()
{
anim = gameObject.GetComponent<Animator>();
audio = GetComponent<AudioSource>();
audio.loop = false; // <--------------- HERE
notes = new ArrayList();
Button rec = record.GetComponent<Button>();
Button pl = play.GetComponent<Button>();
record.onClick.AddListener(()=>{ recordMode = !recordMode; });
play.onClick.AddListener(() => { playMode = !playMode; recordMode = false; });
}
You can either do this in code as above or directly in the inspector of your AudioSource. I think the default value of the loop property is set to true, that's why it's looping when you play a note.