处理class库时如何使用MVVMCross将Fragment组成一个Activity

Question

If you have the following project structure:

• Main Project - Android Host app
• Component A - Android Class Library
• Component B - Android Class Library

If Main Project contains the MainActivity that hosts the FrameLayout.

How exactly would one use the MvxNavigationService to navigate to a fragment using the MvxFragmentPresentationAttribute, when that attribute requires two vital pieces of information:

• Type of the Host viewmodel
• Android Resource Id of the FrameLayout.

Is there anyway to accomplish this?

Thanks

Answer 1

Your fragment class would look like this.

[MvxFragmentPresentation(typeof(MainViewModel), Resource.Id.frameLayout, AddToBackStack = true)]
[Register("mynamespace.CardsBaseView")]
public class CardsBaseView : MvxFragment<CardsBaseViewModel> {
}

Here MainViewModel is associated with MainActivity which is hosting this frag.

To launch this fragment.

Suppose you want to go to CardsBaseView from MyView;

Your MyViewModel should look like the below.

public class MyViewModel : MvxViewModel
{
    private readonly IMvxNavigationService _navigationService;

    public MyViewModel(IMvxNavigationService navigationService)
    {
        _navigationService = navigationService;
    }
void NavigateToCardsView(){
_navigationService.Navigate<CardsBaseViewModel>(); 
}