From 7ed9cc5bb6a07a8358a2705797bd2b31c6e39fd4 Mon Sep 17 00:00:00 2001
From: JLChen <551775569@qq.com>
Date: 星期四, 07 一月 2021 18:33:34 +0800
Subject: [PATCH] 2021-01-07 1.注册功能，忘记密码功能相关接口替换，UI界面修改调整。
---
Crabtree/SmartHome/UI/SimpleControl/Phone/Register/AccountRegistration.cs | 412 +++++++++++++++++++++++++++++++++++-----------------------
1 files changed, 250 insertions(+), 162 deletions(-)
diff --git a/Crabtree/SmartHome/UI/SimpleControl/Phone/Register/AccountRegistration.cs b/Crabtree/SmartHome/UI/SimpleControl/Phone/Register/AccountRegistration.cs
index 2e4baa7..b0fde58 100644
--- a/Crabtree/SmartHome/UI/SimpleControl/Phone/Register/AccountRegistration.cs
+++ b/Crabtree/SmartHome/UI/SimpleControl/Phone/Register/AccountRegistration.cs
@@ -5,6 +5,11 @@
{
public class AccountRegistration_Crabtree : Dialog
{
+ /// <summary>
+ ///
+ /// </summary>
+ PageLayout bodyPageView;
+
public AccountRegistration_Crabtree ()
{
BackgroundColor = SkinStyle.Current.MainColor;
@@ -49,37 +54,171 @@
new AccountLogin ().Show ();
};
- var bodyView = new FrameLayout () {
+ bodyPageView = new PageLayout () {
Width = LayoutParams.MatchParent,
- Height = Application.GetRealHeight (1136 - 126),
+ Height = Application.GetRealHeight (Application.DesignHeight - 126),
Y = topView.Bottom,
BackgroundColor = SkinStyle.Current.ViewColor,
};
- AddChidren (bodyView);
- bodyView.MouseDownEventHandler += (sender, e) => {
+ AddChidren (bodyPageView);
+
+ bodyPageView.PageChange += (sender, e) => {
+ //2020-09-04 淇瀹夊崜鍙虫粦闂��闂
+ if (e < bodyPageView.ChildrenCount - 1) {
+ bodyPageView.GetChildren (bodyPageView.ChildrenCount - 1).RemoveFromParent ();
+ }
+ };
+ bodyPageView.MouseDownEventHandler += (sender, e) => {
Application.HideSoftInput ();
};
+ FrameLayout bodyView = new FrameLayout ();
+ bodyPageView.AddChidren (bodyView);
+ bodyPageView.IsShowPoint = false;
EmailRegistrationView (bodyView);
}
+
+ /// <summary>
+ /// 閭娉ㄥ唽椤甸潰
+ /// </summary>
+ /// <param name="registrationView"></param>
void EmailRegistrationView (FrameLayout registrationView)
{
+ registrationView.RemoveAll ();
+ Button btnEmail = new Button () {
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ Gravity = Gravity.CenterHorizontal,
+ Y = Application.GetRealWidth (20),
+ TextID = R.MyInternationalizationString.EmailAddress,
+ TextAlignment = TextAlignment.CenterLeft,
+ TextSize = 12,
+ TextColor = SkinStyle.Current.TextColor1,
+ };
+ registrationView.AddChidren (btnEmail);
+
+ FrameLayout EmailView = new FrameLayout () {
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ Gravity = Gravity.CenterHorizontal,
+ Y = btnEmail.Bottom,
+ BorderWidth = 1,
+ Radius = 5,
+ BorderColor = SkinStyle.Current.BorderColor,
+ //Text = "1270166900@qq.com"
+ };
+ registrationView.AddChidren (EmailView);
+
+ EditText etEmailAddress = new EditText () {
+ TextAlignment = TextAlignment.Center,
+ TextColor = SkinStyle.Current.TextColor1,
+ PlaceholderText = Language.StringByID (R.MyInternationalizationString.EmailAddress),
+ PlaceholderTextColor = SkinStyle.Current.PlaceholderTextColor,
+ };
+ EmailView.AddChidren (etEmailAddress);
+
+ Button btnNext = new Button () {
+ Y = EmailView.Bottom + Application.GetRealWidth (20),
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ Gravity = Gravity.CenterHorizontal,
+ BackgroundColor = SkinStyle.Current.MainColor,
+ SelectedBackgroundColor = SkinStyle.Current.SelectedColor,
+ TextID = R.MyInternationalizationString.Next,
+ TextColor = SkinStyle.Current.TextColor1,
+ Radius = 5,
+ BorderColor = SkinStyle.Current.Transparent,
+ BorderWidth = 0,
+ TextSize = 18,
+ TextAlignment = TextAlignment.Center,
+ };
+ registrationView.AddChidren (btnNext);
+ btnNext.MouseDownEventHandler += (sender, e) => {
+ btnNext.IsSelected = true;
+ };
+
+ btnNext.MouseUpEventHandler += (sender, e) => {
+ btnNext.IsSelected = false;
+ string account = etEmailAddress.Text.Trim ();
+ if (!CommonUtlis.Current.CheckEmail (account)) {
+ new Alert (Language.StringByID (R.MyInternationalizationString.Tip), Language.StringByID (R.MyInternationalizationString.PleaseCheckEmailAddressCorrectly),
+ Language.StringByID (R.MyInternationalizationString.Close)).Show ();
+ return;
+ }
+
+ SendVerificationCode (account, false);
+ };
+
+ }
+
+ /// <summary>
+ /// 鎵嬫満鎴栬�呴偖绠卞彂閫侀獙璇佺爜骞跺姞杞藉搴旂殑娉ㄥ唽椤甸潰
+ /// </summary>
+ /// <param name="account">璐﹀彿 閭鎴栬�呮墜鏈哄彿</param>
+ /// <param name="isPhone">鏄惁鏄墜鏈�</param>
+ void SendVerificationCode (string account, bool isPhone = true)
+ {
+ MainPage.Loading.Start (Language.StringByID (R.MyInternationalizationString.load));
+ System.Threading.Tasks.Task.Run (() => {
+ try {
+ var requestRevertObj = HttpServerRequest.Current.VerificationCodeSend (VerifyType.REGISTER_USER, account);
+ if (requestRevertObj.Code == StateCode.SUCCESS) {
+ Application.RunOnMainThread (() => {
+ // isPhone 鏄惁鏄墜鏈�
+ InitSMSView (account, false);
+ bodyPageView.PageIndex = bodyPageView.ChildrenCount - 1;
+ });
+ } else {
+ //鎻愮ず閿欒
+ IMessageCommon.Current.ShowErrorInfoAlter (requestRevertObj.Code);
+ }
+ } catch {
+ MainPage.FailureToServer ();
+ } finally {
+ Application.RunOnMainThread (() => {
+ MainPage.Loading.Hide ();
+ });
+ }
+ });
+ }
+
+ /// <summary>
+ /// 楠岃瘉楠岃瘉鐮佸苟鎻愪氦娉ㄥ唽
+ /// </summary>
+ /// <param name="mAccount"></param>
+ /// <param name="bPhone"></param>
+ void InitSMSView (string mAccount, bool bPhone = true)
+ {
+ FrameLayout mobileChencView = new FrameLayout ();
+ bodyPageView.AddChidren (mobileChencView);
+
+ Button btnAccount = new Button () {
+ Gravity = Gravity.CenterHorizontal,
+ Y = Application.GetRealWidth (20),
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (50),
+ Text = mAccount,
+ TextColor = SkinStyle.Current.TextColor1,
+ TextAlignment = TextAlignment.Center,
+ };
+ mobileChencView.AddChidren (btnAccount);
+
Button btnName = new Button () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
- Y = Application.GetRealHeight (20),
+ Y = Application.GetRealWidth (70),
TextID = R.MyInternationalizationString.Name,
TextAlignment = TextAlignment.CenterLeft,
TextSize = 12,
TextColor = SkinStyle.Current.TextColor1,
};
- registrationView.AddChidren (btnName);
+ mobileChencView.AddChidren (btnName);
EditText etName = new EditText () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
Y = btnName.Bottom,
TextAlignment = TextAlignment.Center,
@@ -87,51 +226,24 @@
Radius = 5,
BorderColor = SkinStyle.Current.BorderColor,
TextColor = SkinStyle.Current.TextColor1,
- //Text = "wxr@hdlchina.com.cn"
};
- registrationView.AddChidren (etName);
-
- Button btnEmail = new Button () {
- Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
- X = Application.GetRealWidth (70),
- Y = etName.Bottom + Application.GetRealHeight (20),
- Text= "Email ID",
- TextAlignment = TextAlignment.CenterLeft,
- TextSize = 12,
- TextColor = SkinStyle.Current.TextColor1,
- };
- registrationView.AddChidren (btnEmail);
-
- EditText etEmailAddress = new EditText () {
- Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
- X = Application.GetRealWidth (70),
- Y = btnEmail.Bottom,
- TextAlignment = TextAlignment.Center,
- BorderWidth = 1,
- Radius = 5,
- BorderColor = SkinStyle.Current.BorderColor,
- TextColor = SkinStyle.Current.TextColor1,
- //Text = "wxr@hdlchina.com.cn"
- };
- registrationView.AddChidren (etEmailAddress);
+ mobileChencView.AddChidren (etName);
Button btnPassword = new Button () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
- Y = etEmailAddress.Bottom + Application.GetRealHeight (20),
+ Y = etName.Bottom,
TextID = R.MyInternationalizationString.Password,
TextAlignment = TextAlignment.CenterLeft,
TextSize = 12,
TextColor = SkinStyle.Current.TextColor1,
};
- registrationView.AddChidren (btnPassword);
+ mobileChencView.AddChidren (btnPassword);
EditText etPasswrod = new EditText () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
Y = btnPassword.Bottom,
BorderWidth = 1,
@@ -142,19 +254,19 @@
SecureTextEntry = true,
//Text = "hdltest1985"
};
- registrationView.AddChidren (etPasswrod);
+ mobileChencView.AddChidren (etPasswrod);
Button btnShowPassword = new Button () {
X = etPasswrod.Right - Application.GetRealWidth (80),
- Y = etPasswrod.Y + Application.GetRealHeight (12),
+ Y = etPasswrod.Y + Application.GetRealWidth (12),
Width = Application.GetRealWidth (73),
- Height = Application.GetRealHeight (60),
+ Height = Application.GetRealWidth (60),
SelectedImagePath = "CrabtreeAdd/ShowPW.png",
UnSelectedImagePath = "CrabtreeAdd/HidePW.png",
BorderColor = SkinStyle.Current.Transparent,
BorderWidth = 1,
Radius = 1
};
- registrationView.AddChidren (btnShowPassword);
+ mobileChencView.AddChidren (btnShowPassword);
btnShowPassword.MouseUpEventHandler += (dd, ff) => {
btnShowPassword.IsSelected = !btnShowPassword.IsSelected;
etPasswrod.SecureTextEntry = !btnShowPassword.IsSelected;
@@ -162,19 +274,19 @@
Button btnConfirmpassword = new Button () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
- Y = etPasswrod.Bottom + Application.GetRealHeight (20),
+ Y = etPasswrod.Bottom,
TextID = R.MyInternationalizationString.RepeatPassword,
TextAlignment = TextAlignment.CenterLeft,
TextSize = 12,
TextColor = SkinStyle.Current.TextColor1,
};
- registrationView.AddChidren (btnConfirmpassword);
+ mobileChencView.AddChidren (btnConfirmpassword);
EditText etConfirmPassword = new EditText () {
Width = Application.GetRealWidth (500),
- Height = Application.GetRealHeight (85),
+ Height = Application.GetRealWidth (85),
X = Application.GetRealWidth (70),
Y = btnConfirmpassword.Bottom,
BorderWidth = 1,
@@ -185,110 +297,137 @@
SecureTextEntry = true,
//Text = "hdltest1985"
};
- registrationView.AddChidren (etConfirmPassword);
+ mobileChencView.AddChidren (etConfirmPassword);
Button btnShowPassword2 = new Button () {
X = etPasswrod.Right - Application.GetRealWidth (80),
- Y = etConfirmPassword.Y + Application.GetRealHeight (12),
+ Y = etConfirmPassword.Y + Application.GetRealWidth (12),
Width = Application.GetRealWidth (73),
- Height = Application.GetRealHeight (60),
+ Height = Application.GetRealWidth (60),
SelectedImagePath = "CrabtreeAdd/ShowPW.png",
UnSelectedImagePath = "CrabtreeAdd/HidePW.png",
BorderColor = SkinStyle.Current.Transparent,
BorderWidth = 1,
Radius = 1
};
- registrationView.AddChidren (btnShowPassword2);
+ mobileChencView.AddChidren (btnShowPassword2);
btnShowPassword2.MouseUpEventHandler += (dd, ff) => {
btnShowPassword2.IsSelected = !btnShowPassword2.IsSelected;
etConfirmPassword.SecureTextEntry = !btnShowPassword2.IsSelected;
};
- Button btnOK = new Button () {
- Width = Application.GetRealWidth (247),
- Height = Application.GetRealHeight (89),
- X = Application.GetRealWidth ((640 - 247) / 2),
- Y = Application.GetRealHeight (800),
- BackgroundColor = SkinStyle.Current.ButtonColor,
- SelectedBackgroundColor = SkinStyle.Current.SelectedColor,
- Text = "Sign up",
+
+ Button btnTitle = new Button () {
+ Gravity = Gravity.CenterHorizontal,
+ Y = etConfirmPassword.Bottom,
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ TextID = R.MyInternationalizationString.MobileVerificationCode,
TextColor = SkinStyle.Current.TextColor1,
+ TextAlignment = TextAlignment.CenterLeft,
+ };
+ mobileChencView.AddChidren (btnTitle);
+
+ EditText etCode = new EditText () {
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ Gravity = Gravity.CenterHorizontal,
+ Y = btnTitle.Bottom,
+ BorderWidth = 1,
Radius = 5,
- BorderColor = SkinStyle.Current.Transparent,
- BorderWidth = 0,
- TextSize = 18,
+ BorderColor = SkinStyle.Current.BorderColor,
+ TextAlignment = TextAlignment.Center,
+ TextColor = SkinStyle.Current.TextColor1
};
- registrationView.AddChidren (btnOK);
- btnOK.MouseDownEventHandler += (sender, e) => {
- btnOK.IsSelected = true;
+ mobileChencView.AddChidren (etCode);
+
+ Button btnConfirem = new Button () {
+ Gravity = Gravity.CenterHorizontal,
+ Y = etCode.Bottom + Application.GetRealWidth (50),
+ Width = Application.GetRealWidth (500),
+ Height = Application.GetRealWidth (85),
+ Text = "Sign up",
+ //TextID = R.MyInternationalizationString.Confrim,
+ TextColor = SkinStyle.Current.TextColor1,
+ TextAlignment = TextAlignment.Center,
+ BackgroundColor = SkinStyle.Current.MainColor,
+ SelectedBackgroundColor = SkinStyle.Current.SelectedColor,
};
- btnOK.MouseUpEventHandler += (sender, e) => {
- btnOK.IsSelected = false;
+ mobileChencView.AddChidren (btnConfirem);
+
+ etCode.TextChangeEventHandler += (sender, e) => {
+ if (e.Length > 6) {
+ etCode.Text = e.Remove (6);
+ } else if (e.Length == 6) {
+ //btnConfirem.IsSelected = btnConfirem.Enable = true;
+ } else {
+ //btnConfirem.IsSelected = btnConfirem.Enable = false;
+ }
};
- btnOK.MouseUpEventHandler += (sender, e) => {
- var reg = new Regex ("^\\s*([A-Za-z0-9_-]+(\\.\\w+)*@(\\w+\\.)+\\w{2,5})\\s*$");
- var ss = reg.Match (etEmailAddress.Text);
- string account = etEmailAddress.Text.Trim ();
+ btnConfirem.MouseDownEventHandler += (sender, e) => {
+ btnConfirem.IsSelected = true;
+ };
+
+ //鐐瑰嚮娉ㄥ唽浜嬩欢
+ btnConfirem.MouseUpEventHandler += (sender, e) => {
+ btnConfirem.IsSelected = false;
string passwordText = etPasswrod.Text.Trim ();
+ string confrimPasswordText = etConfirmPassword.Text.Trim ();
string userName = etName.Text.Trim ();
- var regName = new Regex (@"^[~!0-9@#$%^&=*\x22]+");
- if (userName.Length == 0) {
+ var regName = new Regex (@"^[~!0-9@#$%^&=*\x22]+");
+ if (string.IsNullOrEmpty (userName)) {
new Alert ("", "Please fill in the Name.", Language.StringByID (R.MyInternationalizationString.Close)).Show ();
return;
} else if (regName.Match (userName).Success) {
new Alert ("", "Protect Your Illegal Characters in Name", Language.StringByID (R.MyInternationalizationString.Close)).Show ();
return;
- } else if (!ss.Success) {
- new Alert ("", Language.StringByID (R.MyInternationalizationString.PleaseCheckEmailAddressCorrectly),
- Language.StringByID (R.MyInternationalizationString.Close)).Show ();
- return;
- } else if (etPasswrod.Text.Trim ().Length < 6) {
- new Alert ("", Language.StringByID (R.MyInternationalizationString.PasswordLenghtTip), Language.StringByID (R.MyInternationalizationString.Close)).Show ();
- return;
- } else if (etPasswrod.Text == "" && etConfirmPassword.Text == "") {
+ }
+ //妫�娴嬪瘑鐮�
+ if (passwordText == "" && confrimPasswordText == "") {
new Alert ("", Language.StringByID (R.MyInternationalizationString.PleaseWriteTheCompleteContent), Language.StringByID (R.MyInternationalizationString.Close)).Show ();
return;
- } else if (etPasswrod.Text.Trim () != etConfirmPassword.Text.Trim ()) {
+ } else if (passwordText.Contains (userName)) {
+ //瀵嗙爜涓嶈兘鍖呭惈鐢ㄦ埛鍚�
+ new Alert ("", ErrorCode.PasswordNotUsername,
+ Language.StringByID (R.MyInternationalizationString.Close)).Show ();
+ return;
+ } else if (!CommonUtlis.Current.CheckPassword (passwordText)) {
+ new Alert ("", ErrorCode.PasswordStrengthNotMatch,
+ Language.StringByID (R.MyInternationalizationString.Close)).Show ();
+ return;
+ } else if (passwordText != confrimPasswordText) {
new Alert ("", Language.StringByID (R.MyInternationalizationString.RepeatPasswordsDidNotmatch),
Language.StringByID (R.MyInternationalizationString.Close)).Show ();
return;
}
+ //妫�娴嬮獙璇佺爜
+ string verCode = etCode.Text.Trim ();
+ if (string.IsNullOrEmpty (verCode)) {
+ Utlis.ShowTip (Language.StringByID (R.MyInternationalizationString.PlsEntryVerificationCode));
+ return;
+ }
+
+ MainPage.Loading.Start (Language.StringByID (R.MyInternationalizationString.load));
+
System.Threading.Tasks.Task.Run (() => {
try {
- Application.RunOnMainThread (() => {
- MainPage.Loading.Start ("Please wait...");
- });
- //string isExistingAccount = "{\"Account\":\"" + account + "\"}";
- var detectionAccountObj = new DetectionAccountObj () { Account = account };
- var postJson = Newtonsoft.Json.JsonConvert.SerializeObject (detectionAccountObj);
-
- var isExistingAccountObj = MainPage.RequestHttps (API.DetectionAccount, postJson);
- if (isExistingAccountObj.StateCode == "AccountExists") {
- string sssd = "杩欎釜璐﹀彿宸茬粡娉ㄥ唽銆�";
- if (Language.CurrentLanguage == "English")
- sssd = "This account has been registered.";
+ var isPhone = false;
+ var revertObj = HttpServerRequest.Current.ValidataCodeAndRegister (userName, mAccount, passwordText, verCode, isPhone);
+ if (revertObj.Code == StateCode.SUCCESS) {
Application.RunOnMainThread (() => {
- new Alert ("", sssd, Language.StringByID (R.MyInternationalizationString.Close)).Show ();
+ new Alert (Language.StringByID (R.MyInternationalizationString.Tip), Language.StringByID (R.MyInternationalizationString.TheAccountTegistrationIsSuccessful), Language.StringByID (R.MyInternationalizationString.Close)).Show ();
+ Close ();
+ new AccountLogin (mAccount, passwordText).Show ();
});
- return;
} else {
- var requestObj = new YdRegisterAccountObj () { Account = account, Password = passwordText, Contact = userName, Language = Language.CurrentLanguage, Company = MainPage.SoftSmsType };
- var requestJson = Newtonsoft.Json.JsonConvert.SerializeObject (requestObj);
- var revertObj = MainPage.RequestHttps (API.YdRegisterAccount, requestJson);
- if (revertObj.StateCode.ToUpper() == "SUCCESS") {
- Application.RunOnMainThread (() => {
- new Alert ("", Language.StringByID (R.MyInternationalizationString.AuthenticationMail), Language.StringByID (R.MyInternationalizationString.Close)).Show ();
- Close ();
- new AccountLogin (account, passwordText).Show ();
- });
- } else {
- //娉ㄥ唽澶辫触鎻愮ず
- ShowErrorInfo (revertObj.StateCode);
- }
+ //鎻愮ず閿欒
+ IMessageCommon.Current.ShowErrorInfoAlter (revertObj.Code);
}
+
+
} catch {
MainPage.FailureToServer ();
} finally {
@@ -297,63 +436,12 @@
});
}
});
- };
- etName.EditorEnterAction += (obj) => {
- //Application.HideSoftInput ();
- etEmailAddress.Foucs = true;
};
- etEmailAddress.EditorEnterAction += (obj) => {
- //Application.HideSoftInput ();
- etPasswrod.Foucs = true;
- };
- etPasswrod.EditorEnterAction += (obj) => {
- Application.HideSoftInput ();
- etConfirmPassword.Foucs = true;
- };
- etConfirmPassword.EditorEnterAction += (obj) => {
- //etConfirmPassword.Foucs = false;
- Application.HideSoftInput ();
- };
- //etConfirmPassword.MouseDownEventHandler += (dd, dds) => {
- // etConfirmPassword.Foucs = true;
- //};
- btnName.MouseDownEventHandler += (sender, e) => {
- Application.HideSoftInput ();
- };
- btnEmail.MouseDownEventHandler += (sender, e) => {
- Application.HideSoftInput ();
- };
- btnPassword.MouseDownEventHandler += (sender, e) => {
- Application.HideSoftInput ();
- };
- btnConfirmpassword.MouseDownEventHandler += (sender, e) => {
- Application.HideSoftInput ();
- };
- }
-
-
-
- void ShowErrorInfo (string stateCodeStr)
- {
- string mes = "";
- //2020-01-06 浠ｈˉ鍏�
- if (stateCodeStr == "AccountExists") {
- mes = "This account has been registered.";
- } else if (stateCodeStr == ErrorCode.NetworkError) {
- mes = ErrorCode.NetworkError;
- } else {
- mes = ErrorCode.OperationFailed + ErrorCode.Reason + stateCodeStr;
-
- }
- if (!string.IsNullOrEmpty (mes)) {
- Application.RunOnMainThread (() => {
- new Alert ("", mes, Language.StringByID (R.MyInternationalizationString.Close)).Show ();
- });
- }
}
+
}
}
\ No newline at end of file
--
Gitblit v1.8.0