yield to check cancellation

Author: hoc081098

lib/pages/home/home_page.dart

@@ -135,6 +135,7 @@ class _HomePageState extends State<HomePage>
       if (message is LogoutSuccessMessage) {
         context.showSnackBar('Logout successfully!');
         await delay(1000);
+        yield null;
 
         context.hideCurrentSnackBar();
         await Navigator.of(context).pushNamedAndRemoveUntil(

lib/pages/login/login_page.dart

@@ -146,6 +146,7 @@ class _MyLoginPageState extends State<LoginPage>
     if (message is LoginSuccessMessage) {
       context.showSnackBar('Login successfully');
       await delay(1000);
+      yield null;
 
       context.hideCurrentSnackBar();
       await Navigator.of(context).pushReplacementNamed(HomePage.routeName);

lib/pages/register/register_page.dart

@@ -143,6 +143,7 @@ class _RegisterPageState extends State<RegisterPage>
     if (message is RegisterSuccessMessage) {
       context.showSnackBar('Register successfully');
       await delay(1000);
+      yield null;
       Navigator.pop<String>(context, message.email);
     }
     if (message is RegisterErrorMessage) {

lib/pages/reset_password/input_token/input_token_and_reset_password_page.dart

@@ -58,6 +58,8 @@ class _InputTokenAndResetPasswordPageState
           .flatMap((message) async* {
         context.showSnackBar(_getMessageString(message));
         await delay(1000);
+        yield null;
+
         if (message is ResetPasswordSuccess) {
           Navigator.pop<String>(context, message.email);
         }