MvvmCross object data binding - xamarin.android

Question

I am new to MvvmCross, I have a question with regards to binding in Android. I can bind to single property but unable to data bind to an object. Not sure what I am doing wrong but here it is:
Model class:
public class Login : MvxNotifyPropertyChanged
{
private string _email;
public string Email
{
get { return _email; }
set
{
SetProperty(ref _email, value);
}
}
public string Password { get; set; }
}
Snippet of View Model Class:
public class LoginOptionViewModel: MvxViewModel
{
private readonly IMvxNavigationService _navigationService;
public LoginOptionViewModel(IMvxNavigationService navigationService)
{
_navigationService = navigationService;
LoginCommand =
new MvxAsyncCommand(async () => await _navigationService.Navigate<RegistrationViewModel>());
}
public IMvxAsyncCommand LoginCommand { get; set; }
private Login _loginInfo;
public Login LoginInfo
{
get
{
return _loginInfo ?? new Login();
}
set
{
_loginInfo = value;
RaisePropertyChanged(() => LoginInfo);
}
}
}
Snippet of Android Axml:
<EditText
android:id="#+id/loginEmailTxt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/EmailHint"
android:textColor="#color/darkNavy"
android:inputType="textEmailAddress"
local:MvxBind="Text LoginInfo.Email" />
Where am I going wrong, I have placed a breakpoint but do not see it being hit. This is binded to EditText but nothing appears to happen. Am I missing or doing something wrong in order to bind to an object property ?

Answer 1

MvvmCross object data binding
You could implement the MvxNotifyPropertyChanged interface, so the system could notifies clients that a property value has changed.
Modify your object to :
public class Login : MvxNotifyPropertyChanged
{
private string _email;
public string Email
{
get => _email;
set => SetProperty(ref _email, value);
}
}
In the MainViewModel :
private Login _login;
public Login Login
{
get
{
return _login ?? new Login() { Email = "=-="};
}
set
{
_login = value;
RaisePropertyChanged(() => Login);
}
}
Then use it in axml :
local:MvxBind="Text Login.Email"
It works fine on my side.
Update :
I cant reproduce your problem, but here is my complete code, hope this can help you :
public class MainViewModel : MvxViewModel
{
public MainViewModel()
{
}
public override Task Initialize()
{
return base.Initialize();
}
public IMvxCommand ResetTextCommand => new MvxCommand(ResetText);
private void ResetText()
{
Text = "Hello MvvmCross";
}
private string _text = "Hello MvvmCross";
public string Text
{
get { return _text; }
set { SetProperty(ref _text, value); }
}
private Login _login;
public Login Login
{
get
{
return _login ?? new Login() { Email = "=-="};
}
set
{
_login = value;
RaisePropertyChanged(() => Login);
}
}
}
public class Login : MvxNotifyPropertyChanged
{
private string _email;
public string Email
{
get => _email;
set => SetProperty(ref _email, value);
}
}
Effect.