3

问题在于绑定到 UIBarButtonItem，代码在模拟器上工作，但在设备上，属性 Enable 不起作用并且 Clicked 工作...

textViewItem 中也存在同样的问题，但这次 text 或 enable 都不起作用。

    public partial class ProcessDetailViewController : MvxBindingTouchViewController<ProcessDetailViewModel>
{
    public ProcessDetailViewController (MvxShowViewModelRequest request)
        : base (request,"ProcessDetailViewController", null)
    {
    }

    public override void DidReceiveMemoryWarning ()
    {
        // Releases the view if it doesn't have a superview.
        base.DidReceiveMemoryWarning ();

        // Release any cached data, images, etc that aren't in use.
    }

    public override void ViewDidLoad ()
    {
        base.ViewDidLoad ();
        this.AddBindings(
            new Dictionary<object, string>()
            {
            { this.lblSeguradoraNome , "{'Text':{'Path':'AssuranceCompanyID'}}" },
            { this.lblSeguradoraGestor , "{'Text':{'Path':'AssuranceManager'}}" },
            { this.lblApoliceData , "{'Text':{'Path':'InsurancePolicyStartDate'}}" },
            { this.lblApoliceNum , "{'Text':{'Path':'InsurancePolicyNumber'}}" },
            { this.lblApoliceRamo , "{'Text':{'Path':'InsurancePolicyBranch'}}" },
            { this.lblDataPedido , "{'Text':{'Path':'RequestDate'}}" },
            { this.lblGestor , "{'Text':{'Path':'InternalManager'}}" },
            { this.lblLocalRiscoCodPostal , "{'Text':{'Path':'InsurancedLocationAddressCityZipCode'}}" },
            { this.lblLocalRiscoConcelho , "{'Text':{'Path':'InsurancedLocationAddressCity'}}" },
            { this.lblLocalRiscoMorada , "{'Text':{'Path':'InsurancedLocationAddress'}}" },
            { this.lblPerito , "{'Text':{'Path':'Surveyer'}}" },
            { this.lblSeguradoCodPostal , "{'Text':{'Path':'InsuredPersonAddressCityZipCode'}}" },
            { this.lblSeguradoConcelho , "{'Text':{'Path':'InsuredPersonAddressCity'}}" },
            { this.lblSeguradoContacto , "{'Text':{'Path':'InsuredPersonPhone'}}" },
            { this.lblSeguradoMorada , "{'Text':{'Path':'InsuredPersonAddress'}}" },
            { this.lblSeguradoNome , "{'Text':{'Path':'InsuredPersonName'}}" },
            { this.btnDownload , "{'Clicked':{'Path':'DownloadProcessButton'},'Enabled':{'Path':'HideIfDownloaded'}}" },
            { this.btnTerminarVisita , "{'Clicked':{'Path':'EndVisitButton'},'Enabled':{'Path':'ShowIfOnVisit'}}" },
            { this.btnObterLocalizacao , "{'Clicked':{'Path':'AdquireLocationButton'},'Enabled':{'Path':'ShowIfOnVisit'}}" },
            { this.btnIniciarVisita , "{'Clicked':{'Path':'BeginVisitButton'},'Enabled':{'Path':'HideIfOnVisit'}}" },
            { this.btnTirarFoto , "{'Clicked':{'Path':'TakePhotoButton'},'Enabled':{'Path':'ShowIfOnVisit'}}" },
            { this.btnVoltar , "{'Clicked':{'Path':'ReturnButton'}}" },
            { this.btnUpload , "{'Clicked':{'Path':'UploadProcessButton'},'Enabled':{'Path':'CanUpload'}}" },
            }
        );
    //  var a= NavigationItem.LeftBarButtonItems[0].Enabled

        // Perform any additional setup after loading the view, typically from a nib.
    }

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

        // Clear any references to subviews of the main view in order to
        // allow the Garbage Collector to collect them sooner.
        //
        // e.g. myOutlet.Dispose (); myOutlet = null;

        ReleaseDesignerOutlets ();
    }

    public override bool ShouldAutorotateToInterfaceOrientation (UIInterfaceOrientation toInterfaceOrientation)
    {
        // Return true for supported orientations
        return true;
    }
 }

 public class ProcessDetailViewModel : ProcessNavigationBaseViewModel
{(...)}

public class ProcessNavigationBaseViewModel : BaseViewModel
{
    (...)

    #region Properties
    private Process _currentProcess;

    private static User _user;

    private bool _isGPSLocationStarted;

    private double _latitude;

    private double _longitude;

    private string _photoFilename = "";

    public Process CurrentProcess
    {
        get
        {
            return _currentProcess;
        }
        set
        {
            _currentProcess = value;
            FirePropertyChanged(() => CurrentProcess);
        }
    }

    public User User
    {
        get { return _user; }
        set
        {
            _user = value;
            FirePropertyChanged(() => User);
        }
    }

    private bool _isDownloaded
    {
        get
        {
            return CurrentProcess.IsLockedInServer && !(CurrentProcess.ProcessState == ProcessState.WaitingReportProduction.ToString());
        }
        set
        {
            CurrentProcess.IsLockedInServer = value;
            FirePropertyChanged(() => ShowIfDownloaded);
            FirePropertyChanged(() => HideIfDownloaded);
        }
    }

    public bool ShowIfDownloaded
    {
        get { return _isDownloaded; }
    }

    public bool HideIfDownloaded
    {
        get { return !_isDownloaded; }
    }

    public bool CanUpload
    {
        get { return ( CurrentProcess.ProcessState == ProcessState.WaitingUpload.ToString()); }
    }

    public bool CanDownload
    {
        get { return (CurrentProcess.ProcessState != ProcessState.WaitingReportProduction.ToString() && 
                                    CurrentProcess.ProcessState == ProcessState.WaitingSurveyorAcceptionDecision.ToString()) ;  }
    }

    public bool ShowIfOnVisit
    {
        get { return (CurrentProcess.ProcessState == ProcessState.OnVisist.ToString()); }
    }

    public bool HideIfOnVisit
    {
        get { return (!(CurrentProcess.ProcessState == ProcessState.OnVisist.ToString())) && ShowIfDownloaded; }
    }

    public string ProcessDescription
    {
        get
        {
            return string.Format("{0} - {1}", CurrentProcess.ProcessNumber, CurrentProcess.RequestedService.RequestedServiceType);
        }
    }
(...)
 }

提前致谢

[编辑]

应用程序输出：2013-01-11 09:16:56.369 LinkFENACAMSIGEPMobileUIIPad[6496:c07] 导航：诊断：2.24 使用 args 导航到 MainMenuViewModel

2013-01-11 09:16:56.369 LinkFENACAMSIGEPMobileUIIPad[6496:c07] TouchNavigation：诊断：2.24 导航请求

2013-01-11 09:16:56.421 LinkFENACAMSIGEPMobileUIIPad [6496:c07] MvxBind：警告：2.29 无法绑定到源为空

2013-01-11 09:16:56.423 LinkFENACAMSIGEPMobileUIIPad [6496:c07] MvxBind：警告：2.29 无法绑定到源为空

[编辑 20130111:11:12] -链接器行为：仅链接 SDK 程序集

类似于： MvvmCross Monotouch - 无法在真正的 iPad 上绑定属性，但它可以在模拟器上工作（我无法完成这项工作......）

4

1 回答 1

7

我在包含的示例代码中看不到 barbutton - 所以我将根据 Text、Clicked、Enabled 等来回答。

如果这在模拟器中有效，但在设备上无效，则可能与链接器有关 - 就像在MvvmCross Monotouch 中一样 - 无法在真实 iPad 上绑定属性，但它在模拟器上有效

要测试这个理论，请尝试打开链接器以包含所有符号

假设这是问题的原因......那么要解决它，您需要包含一个 LinkerPleaseInclude.cs 文件，该文件将诱使链接器包含这些属性。

例如，它可能看起来像：

public class LinkerIncludePlease
{
    private void IncludeClicked(UIButton button)
    {
        button.Clicked += (s, e) => { };
    }

    private void IncludeEnabled(UIButton button)
    {
        button.Enabled = !button.Enabled;
    }

    private void IncludeText(UILabel label)
    {
        label.Text = label.Text + "test";
    }
}

注意：此代码从未实际执行，而是由链接器在构建时分析。

于 2013-01-11T11:41:33.263 回答