SideMenu for mvvmCross(SideMenu for mvvmCross)

 为Xamarin.iOS应用程序实现侧面菜单，但在控制台中收到警告： 
 
 
 
 mvx：警告：0.25没有发现侧面菜单。 要使用sidemenu使用'MvxPanelPresentationAttribute'类装饰viewcontroller类，并将面板设置为'Left'或'Right'。 
 
 
 脚步 
 
 1）为菜单创建基类（来自样本 ） 
 
public class BaseMenuViewController<T> : MvxViewController<T>, IMvxSidebarMenu where T : class, IMvxViewModel
{
    public virtual UIImage MenuButtonImage => UIImage.FromBundle("burger");

    public virtual bool AnimateMenu => true;
    public virtual float DarkOverlayAlpha => 0;
    public virtual bool HasDarkOverlay => false;
    public virtual bool HasShadowing => true;
    public virtual bool DisablePanGesture => false;
    public virtual bool ReopenOnRotate => true;

    private int MaxMenuWidth = 300;
    private int MinSpaceRightOfTheMenu = 55;

    public int MenuWidth => UserInterfaceIdiomIsPhone ?
        int.Parse(UIScreen.MainScreen.Bounds.Width.ToString()) - MinSpaceRightOfTheMenu : MaxMenuWidth;

    private bool UserInterfaceIdiomIsPhone
    {
        get { return UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone; }
    }

    public virtual void MenuWillOpen()
    {
    }

    public virtual void MenuDidOpen()
    {
    }

    public virtual void MenuWillClose()
    {
    }

    public virtual void MenuDidClose()
    {
    } 
}
 
 2）实现VisibleView（第一个可见） 
 
[MvxSidebarPresentation(MvxPanelEnum.Center, MvxPanelHintType.ResetRoot, true)]
public partial class ContentViewController : MvxViewController<ContentViewModel>
{
    public ContentViewController()
        : base("ContentViewController", null)
    {
    }

    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        View.BackgroundColor = UIColor.Purple;
        this.ViewModel.Show<MenuViewModel>();
    }
}
 
 3）实现MenuElementViewController（SideMenu） 
 
[Register("MenuViewController")]
[MvxSidebarPresentation(MvxPanelEnum.Left, MvxPanelHintType.PushPanel, false)]
public class MenuViewController : BaseMenuViewController<MenuViewModel>
{
    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        this.View.BackgroundColor = UIColor.Red;
    }
}
 
 4）在Setup中为SideMenu添加演示者 
 
protected override IMvxIosViewPresenter CreatePresenter()
{
    return new MvxSidebarPresenter((MvxApplicationDelegate)ApplicationDelegate, Window);
}
 
 预期的行为 
 
 应该从汉堡点按钮看点控制器 
 
 实际行为 
 
 来自point1的控制器变得可见，但是没有汉堡按钮，来自point2的控制器未初始化，在控制台中警告关于错过的类装饰，但是当你看到它们存在时（同样警告已弃用且需要更新 - 检查源代码 - 搜索完成正确类型，但警告有旧消息 ） 
 
 组态 
 
 MvvmCross v 5.0.6 
 
 
 
 MvvmCross 
 
 
 MvvmCross.Core 
 
 
 MvvmCross.Binding 
 
 
 MvvmCross.iOS.Support 
 
 
 MvvmCross.iOS.Support.XamarinSidebar 
 
 
 MvvmCross.Platform 
 
 
 SidebarNavigation 
 
 
 在查找错误时也看到了这篇文章 - 重新检查，看起来一切都很好，但不行。 
 
 警告日志： 
 
 
 
 mvx：诊断：0.21设置：次要结束 
 
 
 mvx：Diagnostic：0.21显示ViewModel ContentViewModel iOS导航：诊断：0.21导航请求 
 
 
 mvx：警告：0.23没有发现侧面菜单。 要使用sidemenu使用'MvxPanelPresentationAttribute'类装饰viewcontroller类，并将面板设置为'Left'或'Right'。 
 
 
 我还希望在调用this.ViewModel.Show<MenuViewModel>();时看到ViewDidload中的ViewDidload在MenuViewController停止this.ViewModel.Show<MenuViewModel>(); 但它永远不会被触发，在此控制器创建的同一时刻模型中。 
 
 有人可以建议做错了吗？ 
 
 
 编辑 
 
 我能够使用侧边栏设置新的空项目，并且按预期工作。 但是相同的代码在我当前的项目中不起作用 - 我不知道为什么装饰属性没有按预期读取.... 

Tying to implement side menu for Xamarin.iOS app, but got warning in console:
 
 
 
mvx:Warning: 0.25 No sidemenu found. To use a sidemenu decorate the viewcontroller class with the 'MvxPanelPresentationAttribute' class and set the panel to 'Left' or 'Right'.
 
 
Steps
 
1) Create base class for menu (from sample)
 
public class BaseMenuViewController<T> : MvxViewController<T>, IMvxSidebarMenu where T : class, IMvxViewModel
{
    public virtual UIImage MenuButtonImage => UIImage.FromBundle("burger");

    public virtual bool AnimateMenu => true;
    public virtual float DarkOverlayAlpha => 0;
    public virtual bool HasDarkOverlay => false;
    public virtual bool HasShadowing => true;
    public virtual bool DisablePanGesture => false;
    public virtual bool ReopenOnRotate => true;

    private int MaxMenuWidth = 300;
    private int MinSpaceRightOfTheMenu = 55;

    public int MenuWidth => UserInterfaceIdiomIsPhone ?
        int.Parse(UIScreen.MainScreen.Bounds.Width.ToString()) - MinSpaceRightOfTheMenu : MaxMenuWidth;

    private bool UserInterfaceIdiomIsPhone
    {
        get { return UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone; }
    }

    public virtual void MenuWillOpen()
    {
    }

    public virtual void MenuDidOpen()
    {
    }

    public virtual void MenuWillClose()
    {
    }

    public virtual void MenuDidClose()
    {
    } 
}
 
2) Implement VisibleView (First one that will be visible)
 
[MvxSidebarPresentation(MvxPanelEnum.Center, MvxPanelHintType.ResetRoot, true)]
public partial class ContentViewController : MvxViewController<ContentViewModel>
{
    public ContentViewController()
        : base("ContentViewController", null)
    {
    }

    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        View.BackgroundColor = UIColor.Purple;
        this.ViewModel.Show<MenuViewModel>();
    }
}
 
3) Implement MenuElementViewController (SideMenu)
 
[Register("MenuViewController")]
[MvxSidebarPresentation(MvxPanelEnum.Left, MvxPanelHintType.PushPanel, false)]
public class MenuViewController : BaseMenuViewController<MenuViewModel>
{
    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        this.View.BackgroundColor = UIColor.Red;
    }
}
 
4) Add presenter for SideMenu in Setup
 
protected override IMvxIosViewPresenter CreatePresenter()
{
    return new MvxSidebarPresenter((MvxApplicationDelegate)ApplicationDelegate, Window);
}
 
Expected behavior
 
Should see controller from point 1 with burger button
 
Actual behavior
 
Controller from point1 become visible but without burger button, Controller from point2 not initialized, Warning in console about missed decoration for class, but as u see they are present (also warnings deprecated and need to be updated - check source code - searching done for correct type, but warning has old message )
 
Configuration
 
MvvmCross v 5.0.6
 
 
 
MvvmCross
 
 
MvvmCross.Core
 
 
MvvmCross.Binding
 
 
MvvmCross.iOS.Support
 
 
MvvmCross.iOS.Support.XamarinSidebar
 
 
MvvmCross.Platform
 
 
SidebarNavigation
 
 
Also saw this post while looking for error - recheck and looks like everything is fine, but not work.
 
Warning log:
 
 
 
mvx:Diagnostic: 0.21 Setup: Secondary end
 
 
mvx:Diagnostic: 0.21 Showing ViewModel ContentViewModel iOSNavigation:Diagnostic: 0.21 Navigate requested
 
 
mvx:Warning: 0.23 No sidemenu found. To use a sidemenu decorate the viewcontroller class with the 'MvxPanelPresentationAttribute' class and set the panel to 'Left' or 'Right'.
 
 
I also expect to see breakPoint stop in ViewDidload for MenuViewController when call this.ViewModel.Show<MenuViewModel>(); but it's never triggered, in same moment model for this controller created.
 
Can someone advice what was done incorrect?
 
 
EDIT
 
I was able to setup new empty project with sidebar and it's work as expected. But same code not work in my current projects - I don't know why decorated attributes are not read as expected....

原文：https://stackoverflow.com/questions/45082154