How to Delete Canvas Panel Child Objects

1. You need to calculate the number of child objects
2. Use loops to get child one by one delete the using Destroy method.



Method 1 :-
========
if (InfoButtonPanel.transform.childCount >= 0) {
     Transform[] allChildren = InfoButtonPanel.transform.GetComponentsInChildren<Transform>();
foreach (var item in allChildren) {
Destroy (item.transform.gameObject);
}
}


Method 2 :-
========
if (InfoButtonPanel.transform.childCount >= 0) {
     for (int i = 0; i < InfoButtonPanel.transform.childCount; i++) {
    GameObject.Destroy(InfoButtonPanel.transform.GetChild(i).gameObject);
}
}

Canvas Button On Click Code

Button.onClick.AddListener


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

public class ButtonController : MonoBehaviour {
public Button myButton;

void Awake()
{
myButton = GetComponent<Button>();
myButton.onClick.AddListener( () => {myFunctionForOnClickEvent("stringValue", 4.5f);} );
}

void myFunctionForOnClickEvent(string arg1, float arg2)
{
print(arg1 + ", " + arg2.ToString());
}
}



You can also remove Listener() using below code on Destroy Function

void Destroy()
{
myButton.onClick.RemoveListener(() => {myFunctionForOnClickEvent("stringValue", 4.5f);});
}

how to get key-hashes for android facebook app

Here is the command :-
=================
Open you Command Prompt  and run below command to get keyhash
Note* :- You need to enter your key store password

keytool -exportcert -alias bowmen -keystore "C:\Users\Red&Black\Downloads\bowmenuserkeystore.keystore" | "C:\openssl\bin\openssl" sha1 -binary |"C:\openssl\bin\openssl" base64

You can get openssl from below link :-
===============================
https://code.google.com/archive/p/openssl-for-windows/downloads

How to delete persistent Data Path file

1.  Attack ClearSaveButton function to your delete Button.


Name Spaces maybe requires :-

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System.Runtime.Serialization.Formatters.Binary;
using System;
using System.IO;

public void ClearSaveButton()
{
ClearDataCanvas.enabled = false;
if (File.Exists (Application.persistentDataPath + "/playerInfo.dat"))
{
 
File.Delete(Application.persistentDataPath + "/playerInfo.dat");

Application.Quit ();
}
}

Game ForgotPassword script Unity c sharp php

ForgotPassword Script :-
========================

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System.Text.RegularExpressions;
public class ForgotPassword : MonoBehaviour {
    public string username;
    public string emailid;
    string ForgotpasswordForUsername_url = "http://www.yourdomain.com/dr/ForgotPasswordForUsername.php";
    string ForgotpasswordForEmailid_url = "http://www.yourdomain.com/dr/ForgotPasswordForEmailid.php";
    public Text forgotusernametext;
    public Text sendingemailText;
    public string answer;
    public Image ForgotPasswordPanel;
    public Image LoginPanel;
    public InputField usernameInputField;
    public InputField passwordInputField;
    public Button loginButton;
    public Button forgotPasswordButton;
    public Button registerButton;

    IEnumerator RetrievePasswordForUsername()
    {
        username = forgotusernametext.text;
        WWWForm form = new WWWForm ();
        form.AddField ("username1", username);
        WWW download2 = new WWW (ForgotpasswordForUsername_url, form);
        yield return download2;
        answer = download2.text.ToString ();
        Debug.Log ("answer2 is" + answer);
        sendingemailText.text = answer;

        
    }
    IEnumerator RetrievePasswordForEmailid()
    {
        emailid = forgotusernametext.text;
        WWWForm form = new WWWForm ();
        form.AddField ("emailid1", emailid);
        WWW download2 = new WWW (ForgotpasswordForEmailid_url, form);
        yield return download2;
        answer = download2.text.ToString ();
        Debug.Log ("answer2 is" + answer);
        sendingemailText.text = answer;
        
    }
    public void SendButton()
    {
        string UserEmail = forgotusernametext.text;
        if (IsvalidEmailId (UserEmail)) {

            if ((forgotusernametext.text != "")  ) {
                StartCoroutine (RetrievePasswordForEmailid ());
                sendingemailText.text = "Loading.......";
            } 
            else 
            {
                sendingemailText.text = "* invalid  email";
            }
        } 
        else 
        {
            if ((forgotusernametext.text != "")  ) {
                StartCoroutine (RetrievePasswordForUsername ());
                sendingemailText.text = "Loading.......";
            } 
            else 
            {
                sendingemailText.text = "* invalid  Username";
            }

        }


    }
    public void BackButton()
    {
        loginButton.interactable = true;
        forgotPasswordButton.interactable = true;
        registerButton.interactable = true;
        usernameInputField.gameObject.SetActive(true);
        passwordInputField.gameObject.SetActive (true);
        ForgotPasswordPanel.gameObject.SetActive (false);
        LoginPanel.gameObject.SetActive (true);
    }
    public static bool IsvalidEmailId(string InputEmail)
    {
        Regex regex = new Regex(@"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,5})+)$");
        Match match = regex.Match (InputEmail);
        if (match.Success)
            return true;
        else
            return false;
    }
    public static bool IsValidUsername(string InputUsername)
    {
        Regex regex1 = new Regex("^[a-zA-Z]{8,12}$");
        Match match1 = regex1.Match (InputUsername);
        if (match1.Success)
            return true;
        else
            return false;
    }

}

Server Side Script :-
======================


<?php session_start();
$servername = "Your_ServerName"; 
$username = "Your_UserName";
$password = "************";
$dbname = "Your_DB_Name";


$conn = new mysqli($servername, $username, $password, $dbname); 


if ($conn->connect_error) { 
    die("Connection failed: " . $conn->connect_error); 
} 


$Username2=$_POST['username1'];
$Emailid2 = $_POST['emailid1'];
$Password2 = $_POST['password1'];
$sql = "SELECT * FROM userinfo where emailid = '$Emailid2' ";
$result  = $conn->query($sql); 
$count=mysqli_num_rows($result);
if($count == 1)
{   
    $rows=mysqli_fetch_array($result);

    $pass = $rows["password"];
    $to = $rows["emailid"];
    $from = "The Red & Black";
    $url = "http://www.thered.black/";
    $body = "Password recovery by The Team Of Red & Black <br>
        your password is : $pass, <br>
    sincerly, <br>
    The Red & black";
    $headers1 = "From: $from\n";
    $headers1 .= "Content-type: text/html;charset=iso-8859-1\r\n";
    $headers1 .= "X-Priority: 1\r\n";
    $headers1 .= "X-MSMail-Priority: High\r\n";
    $headers1 .= "X-Mailer: Just My Server\r\n";

    $subject = "Darkness Password recovered";
    $sentmail = mail($to,$subject,$body,$headers1);
}
else
{

    if (($_POST['emailid1'] != "emailid") ) {
        echo "Your emailid is  not found  to our database";
        # code...
    }

}
if (($sentmail == 1)) {
    echo "Password Sent by Your  email address $to ";
    # code...
}
else
{
    if($_POST['email']!="")
        echo "problem with sending mail";
}

$conn->close(); 

?>

Game Login script Unity c sharp php

Login Script :-
================

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class LoginScript : MonoBehaviour {
    public InputField usernameInputField;
    public InputField passwordInputField;
    public string username;
    public string password;
    public string answer;
    public string answer2;
    public string[] splitWords;
    string errorString;
    public Text errormsg;
    public Text DidnotenterText;
    string login_url = "http://www.yourdomain.com/dr/Login.php";
    public Image LoginSuccessfulPanel;
    public Image RegisterPanel;
    public Image LoginPanel;
    public Image RegistrationSuccessfullPanel;
    public Image ForgotPasswordPanel;
    public Text forgotusernametext;
    public Text sendingemailText;

    public Button loginButton;
    public Button forgotPasswordButton;
    public Button registerButton;

    public void Start () {
        LoginSuccessfulPanel.gameObject.SetActive (false);
        RegisterPanel.gameObject.SetActive (false);
        RegistrationSuccessfullPanel.gameObject.SetActive (false);
        ForgotPasswordPanel.gameObject.SetActive (false);

    }
    public void LoginButton()
    {
        if ((usernameInputField.text != "")  && (passwordInputField.text != "")) {
            StartCoroutine (RetrieveData ());
        } else {
            DidnotenterText.text = "* invalid  Username and Password";
        }
    }
    IEnumerator RetrieveData()
    {
        username = usernameInputField.text;
        password = passwordInputField.text;
        
        WWWForm form = new WWWForm ();
        form.AddField ("username1", username);
        form.AddField ("password1", password);

        WWW download1 = new WWW (login_url, form);
        
        yield return download1;
        answer = download1.text.ToString ();
        Debug.Log ("Ans" + answer);


        if (answer != "MisMatch") {
            DidnotenterText.text = " Loading .....";
            DidnotenterText.text = answer.ToString();
            splitWords = answer.Split ('-');

            /*GameControl.control.Coins = int.Parse(splitWords [0]);
            GameControl.control.Health = int.Parse(splitWords [1]);
            GameControl.control.Spirit = int.Parse(splitWords [2]);*/

            //Application.LoadLevel("CharSelection");
        }

        if (answer == "MisMatch") 
        {
            DidnotenterText.text = "* invalid  Username and Password";
            LoginSuccessfulPanel.gameObject.SetActive(false);
        }

        if (!string.IsNullOrEmpty (download1.error)) {
            print ("Error downloading: " + download1.error);
            errorString = download1.error;
            errormsg.text = errorString;

        } else {

        }
    }
    public void OkButton()
    {
        LoginSuccessfulPanel.gameObject.SetActive (false);
        ForgotPasswordPanel.gameObject.SetActive (false);
        usernameInputField.text = "";
        passwordInputField.text = "";

    }
    public void RegisterButton()
    {
        DidnotenterText.text = "";
        usernameInputField.text = "";
        passwordInputField.text = "";
        LoginSuccessfulPanel.gameObject.SetActive (false);
        RegisterPanel.gameObject.SetActive (true);

    }

    public void ForgotPassword()
    {
        loginButton.interactable = false;
        forgotPasswordButton.interactable = false;
        registerButton.interactable = false;
        usernameInputField.gameObject.SetActive(false);
        passwordInputField.gameObject.SetActive (false);
        ForgotPasswordPanel.gameObject.SetActive (true);
    }
        
    
}



Server Side Script :-
======================

<?php 
$servername = "Your_ServerName"; 
$username = "Your_UserName";
$password = "************";
$dbname = "Your_DB_Name";


$conn = new mysqli($servername, $username, $password, $dbname); 

if ($conn->connect_error) { 
    die("Connection failed: " . $conn->connect_error); 
} 


$Username2=$_POST['username1'];
$Emailid2 = $_POST['emailid1'];
$Password2 = $_POST['password1'];


if ($result->num_rows > 0) 
{ 
    $exits = 1; 
} 
else 
{ 
    $sql1 = "SELECT * FROM userinfo where username = '$Username2' AND password = '$Password2'";
    $result = $conn->query($sql1);
}


if ( $row = $result->fetch_assoc())
{ 
    echo $row["Coins"]."-".$row["Health"]."-".$row["Spirit"];
} 
else
{
    echo "MisMatch";
}
$conn->close(); 

?>