Question

我正在玩mvvmcross5导航服务。我尝试从Initialize方法更改标签，但没有任何反应。

我做错了什么？

这是一个简单的代码：

public class SecondViewModel : MvxViewModel<Dictionary<string, string>>
{
    private readonly IMvxNavigationService _navigationService;
    private string _mainPageButtonText = "test";

    public SecondViewModel(IMvxNavigationService navigationService)
    {
        _navigationService = navigationService;
    }

    public string MainPageButtonText
    {
        get
        {
            return _mainPageButtonText;
        }
        set
        {
            SetProperty(ref _mainPageButtonText, value);
        }
    }

    public IMvxAsyncCommand BackCommand => new MvxAsyncCommand(() => {

        MainPageButtonText = "it works";

        return Task.FromResult(true);
    });

    public override Task Initialize(Dictionary<string, string> parameter)
    {
        MainPageButtonText = "it does not work";

        return Task.FromResult(true);
    }
}

Answer 1

这是MvvmCross中的一个错误，将在5.0.2中修复。见https://github.com/MvvmCross/MvvmCross/releases/tag/5.0.2

mvvmcross5导航服务：我应该用什么方式使用Initialize方法来改变UI？

1 个答案: