prevent rapid clicking actions that crash app

src/App/Pages/HomePage.cs

@@ -16,6 +16,7 @@ namespace Bit.App.Pages
         private readonly IAuthService _authService;
         private readonly IUserDialogs _userDialogs;
         private readonly ISettings _settings;
+        private DateTime? _lastAction;
 
         public HomePage()
             : base(updateActivity: false)
@@ -92,11 +93,23 @@ namespace Bit.App.Pages
 
         public async Task LoginAsync()
         {
+            if(_lastAction.LastActionWasRecent())
+            {
+                return;
+            }
+            _lastAction = DateTime.UtcNow;
+
             await Navigation.PushForDeviceAsync(new LoginPage());
         }
 
         public async Task RegisterAsync()
         {
+            if(_lastAction.LastActionWasRecent())
+            {
+                return;
+            }
+            _lastAction = DateTime.UtcNow;
+
             await Navigation.PushForDeviceAsync(new RegisterPage(this));
         }
 

src/App/Pages/Lock/LockFingerprintPage.cs

@@ -16,6 +16,7 @@ namespace Bit.App.Pages
         private readonly ISettings _settings;
         private readonly IAppSettingsService _appSettings;
         private readonly bool _checkFingerprintImmediately;
+        private DateTime? _lastAction;
 
         public LockFingerprintPage(bool checkFingerprintImmediately)
         {
@@ -79,6 +80,12 @@ namespace Bit.App.Pages
 
         public async Task CheckFingerprintAsync()
         {
+            if(_lastAction.LastActionWasRecent())
+            {
+                return;
+            }
+            _lastAction = DateTime.UtcNow;
+
             var result = await _fingerprint.AuthenticateAsync(AppResources.FingerprintDirection);
             if(result.Authenticated)
             {

src/App/Pages/Lock/LockPasswordPage.cs

@@ -14,6 +14,7 @@ namespace Bit.App.Pages
         private readonly IAuthService _authService;
         private readonly IAppSettingsService _appSettingsService;
         private readonly ICryptoService _cryptoService;
+        private DateTime? _lastAction;
 
         public LockPasswordPage()
         {
@@ -111,6 +112,12 @@ namespace Bit.App.Pages
 
         protected async Task CheckPasswordAsync()
         {
+            if(_lastAction.LastActionWasRecent())
+            {
+                return;
+            }
+            _lastAction = DateTime.UtcNow;
+
             if(string.IsNullOrWhiteSpace(PasswordCell.Entry.Text))
             {
                 await DisplayAlert(AppResources.AnErrorHasOccurred, string.Format(AppResources.ValidationFieldRequired,

src/App/Pages/Lock/LockPinPage.cs

@@ -13,6 +13,7 @@ namespace Bit.App.Pages
         private readonly IAuthService _authService;
         private readonly IAppSettingsService _appSettingsService;
         private TapGestureRecognizer _tgr;
+        private DateTime? _lastAction;
 
         public LockPinPage()
         {
@@ -91,6 +92,12 @@ namespace Bit.App.Pages
 
         protected void PinEntered(object sender, EventArgs args)
         {
+            if(_lastAction.LastActionWasRecent())
+            {
+                return;
+            }
+            _lastAction = DateTime.UtcNow;
+
             if(Model.PIN == _authService.PIN)
             {
                 _appSettingsService.Locked = false;

src/App/Pages/Settings/SettingsAddFolderPage.cs

@@ -17,6 +17,7 @@ namespace Bit.App.Pages
         private readonly IUserDialogs _userDialogs;
         private readonly IConnectivity _connectivity;
         private readonly IGoogleAnalyticsService _googleAnalyticsService;
+        private DateTime? _lastAction;
 
         public SettingsAddFolderPage()
         {
@@ -56,6 +57,12 @@ namespace Bit.App.Pages
 
             var saveToolBarItem = new ToolbarItem(AppResources.Save, null, async () =>
             {
+                if(_lastAction.LastActionWasRecent())
+                {
+                    return;
+                }
+                _lastAction = DateTime.UtcNow;
+
                 if(!_connectivity.IsConnected)
                 {
                     AlertNoConnection();

src/App/Pages/Settings/SettingsEditFolderPage.cs

@@ -17,6 +17,7 @@ namespace Bit.App.Pages
         private readonly IUserDialogs _userDialogs;
         private readonly IConnectivity _connectivity;
         private readonly IGoogleAnalyticsService _googleAnalyticsService;
+        private DateTime? _lastAction;
 
         public SettingsEditFolderPage(string folderId)
         {
@@ -73,6 +74,12 @@ namespace Bit.App.Pages
 
             var saveToolBarItem = new ToolbarItem(AppResources.Save, null, async () =>
             {
+                if(_lastAction.LastActionWasRecent())
+                {
+                    return;
+                }
+                _lastAction = DateTime.UtcNow;
+
                 if(!_connectivity.IsConnected)
                 {
                     AlertNoConnection();

src/App/Pages/Vault/VaultAddLoginPage.cs

@@ -27,6 +27,7 @@ namespace Bit.App.Pages
         private readonly string _defaultUri;
         private readonly string _defaultName;
         private readonly bool _fromAutofill;
+        private DateTime? _lastAction;
 
         public VaultAddLoginPage(string defaultUri = null, string defaultName = null, bool fromAutofill = false)
         {
@@ -135,6 +136,12 @@ namespace Bit.App.Pages
 
             var saveToolBarItem = new ToolbarItem(AppResources.Save, null, async () =>
             {
+                if(_lastAction.LastActionWasRecent())
+                {
+                    return;
+                }
+                _lastAction = DateTime.UtcNow;
+
                 if(!_connectivity.IsConnected)
                 {
                     AlertNoConnection();

src/App/Pages/Vault/VaultEditLoginPage.cs

@@ -19,6 +19,7 @@ namespace Bit.App.Pages
         private readonly IUserDialogs _userDialogs;
         private readonly IConnectivity _connectivity;
         private readonly IGoogleAnalyticsService _googleAnalyticsService;
+        private DateTime? _lastAction;
 
         public VaultEditLoginPage(string loginId)
         {
@@ -146,6 +147,12 @@ namespace Bit.App.Pages
 
             var saveToolBarItem = new ToolbarItem(AppResources.Save, null, async () =>
             {
+                if(_lastAction.LastActionWasRecent())
+                {
+                    return;
+                }
+                _lastAction = DateTime.UtcNow;
+
                 if(!_connectivity.IsConnected)
                 {
                     AlertNoConnection();

src/App/Utilities/Extentions.cs

@@ -106,5 +106,16 @@ namespace Bit.App
                 }
             }
         }
+
+        public static bool LastActionWasRecent(this DateTime? lastAction, int milliseconds = 1000)
+        {
+            if(lastAction.HasValue && (DateTime.UtcNow - lastAction.Value).TotalMilliseconds < milliseconds)
+            {
+                System.Diagnostics.Debug.WriteLine("Last action occurred recently.");
+                return true;
+            }
+            
+            return false;
+        }
     }
 }