Question

首先我使用mvvmcross version 3.0.13。当从继承自MvxViewModel的基类继承类时，不会从IoC调用Init方法。目前丑陋的解决方法是在构造函数中调用Init。这可能是一个错误还是有其他模式可供使用？

在这两个类（该基础的基础和子级）中，它不会被调用。例如：

public class BaseViewModel : MvxViewModel
{
    protected CDataImportService DataImportService { get; private set; }
    protected CSettingService SettingService { get; private set; }
    protected CDataService DataService { get; private set; }
    protected CDocumentService DocumentService { get; private set; }

    public BaseViewModel(IDataService objDataService, IDataImportService objDataImportService, IDocumentService objDocumentService, ISettingService objSettingService)
    {
        DataImportService = (CDataImportService)objDataImportService;
        SettingService = (CSettingService)objSettingService;
        DataService = (CDataService)objDataService;
        DocumentService = (CDocumentService) objDocumentService;
    }

    public void Init()
    {
        Mvx.Trace("Init called in {0}", GetType().Name);
    }
}

public class DocumentsViewModel : BaseViewModel
{
    public MenuViewModel(IDataService objDataService, IDataImportService objDataImportService, IDocumentService objDocumentService, ISettingService objSettingService)
        : base(objDataService, objDataImportService, objDocumentService, objSettingService)
    {
    }
}

Answer 1

它自己的IOC不会调用Constructor-Init-Reload-Start序列。

IOC是一般的C＃服务，只调用构造函数部分。

如果您想要调用整个序列，则可以通过IMvxViewModelLoader对象访问它 - 例如Mvx.Resolve<IMvxViewModelLoader>().LoadViewModel(MvxViewModelRequest<MyViewModel>.GetDefaultRequest(), null);

默认情况下，这将使用默认ViewModel定位器来创建视图模型实例 - https://github.com/MvvmCross/MvvmCross/blob/v3/Cirrious/Cirrious.MvvmCross/ViewModels/MvxDefaultViewModelLocator.cs

如果有帮助，请获取更多信息：

mvvmcross IOC在https://github.com/MvvmCross/MvvmCross/wiki/Service-Location-and-Inversion-of-Control
查看模型位置在https://github.com/MvvmCross/MvvmCross/wiki/Customising-using-App-and-Setup

如果我继承了从MvxViewModel派生的基础ViewModel，则不会调用mvvmcross Init方法

1 个答案: