I am trying to fire a command to close my page after finalizing the execution of a method. However, the Close() command is not working.
According to the code below, how do I close my view after finishing the method execution?
My Model:
public IMvxCommand BtnSaveCommand
{
get
{
return new MvxAsyncCommand(updateOrder);
}
}
private async Task<bool> updateOrder()
{
var errors = validator.Validate(this);
if (!errors.IsValid)
{
messageService.showMessage(errors);
return false;
}
var responseEdit = await orderService.update(configureOrder());
if (responseEdit == null)
{
messageService.showMessage("Pedido " + Item.id + " foi editado com sucesso.");
configureUpdateItem();
//Close View
Close(this);
}
else
{
messageService.showMessage((IErrorCollection)responseEdit);
}
return true;
}
--Update
Adding more information, when triggered the Close(this) command I get the following error:
Mvx: Warning: 325,38 Do not know how to close this viewmodel - topmost view does not present this viewmodel
You need to call DismissViewController() on the NavigationController
Related
This my process screen:
as you can see it throws errors but it doesnt indicate the error mark on the grid.
After clicking the process button, it just unchecks the checkbox in my records
i want the grid to be like this(with the red 'x' mark):
this is my graph :
public PXCancel<PayrollFilter> Cancel;
public PXSetup<PayrollSetup> PayrollSetup;
public PXFilter<PayrollFilter> Filter;
[PXFilterable]
public PXFilteredProcessingJoin<PayrollEmployeeProcess, PayrollFilter,
InnerJoin<EPEmployee,
On<PayrollEmployee.employeeID, Equal<EPEmployee.bAccountID>>,
InnerJoin<Branch,
On<EPEmployee.parentBAccountID, Equal<Branch.bAccountID>>>>,
Where<PayrollEmployee.payPeriodID, Equal<Current<PayrollFilter.payPeriodID>>,
And<Branch.branchID, Equal<Current<AccessInfo.branchID>>>>> EmployeePayrollProcess;
#region Constructor
public PayrollProcess()
{
PayrollSetup setup = PayrollSetup.Current;
EmployeePayrollProcess.SetSelected<PayrollEmployeeProcess.selected>();
EmployeePayrollProcess.SetProcessDelegate(delegate (List<PayrollEmployeeProcess> employees)
{
if (Filter.Current == null) return;
var payPeriod = Filter.Current.PayPeriodID ?? 0;
var payrollPeriod = Filter.Current.PayrollPeriodID ?? 0;
if (payPeriod == 0 || payrollPeriod == 0) return;
PXLongOperation.StartOperation(this, delegate ()
{
bool errorOccured = false;
foreach (PayrollEmployeeProcess employee in employees)
{
PayrollRegisterEntry graph = PXGraph.CreateInstance<PayrollRegisterEntry>();
try
{
graph.ProcessPayroll(employee, payPeriod, payrollPeriod);
PXProcessing<PayrollEmployeeProcess>.SetInfo("Employee processed");
}
catch (Exception ex)
{
errorOccured = true;
//employees.IndexOf(employee),
PXProcessing<PayrollEmployeeProcess>.SetError(ex);
}
finally
{
graph.Clear();
}
}
if (errorOccured) throw new PXException("At least one employee was not processed.");
});
});
// EmployeePayrollProcess.
}`
can anyone can help me? I'm using Acumatica 6
Throwing an exception in Acumatica sets the error in the header. To set a Row or Field level error you need to set/raise it. There's a few ways to set/raise errors, what they have in common is that they don't use the 'throw' keyword.
For a processing screen with a filter, use the following syntax to raise the error:
PXFilteredProcessing<GridDetailDAC, GridFilterDAC>.SetError(rowIndex, new PXSetPropertyException("Error Message", PXErrorLevel.RowError));
Processing screen without filter:
PXProcessing.SetError(rowIndex, new PXException("Error Message"));
I have a modal Navigation page with an image which acts like a button;
<Image Source ="share.png" HeightRequest="32" WidthRequest="32">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="On_Share" />
</Image.GestureRecognizers>
</Image>
And the method behind;
async void On_Share(object sender, EventArgs e)
{
if (CrossConnectivity.Current.IsConnected)
{
var message = "Share this";
var title = "Share";
await CrossShare.Current.Share(new ShareMessage { Text = message, Title = title}, new ShareOptions { ExcludedUIActivityTypes = new[] { ShareUIActivityType.PostToFacebook } });
}
else
{
NoInternetLabel.IsVisible = true;
}
}
I'm getting the error when I try to click on the share image/button. I've put breakpoints into the first line of the On_Share method & they're not being hit.
Warning: Attempt to present <UIActivityViewController: 0x141b60f70> on <Xamarin_Forms_Platform_iOS_ModalWrapper: 0x1419a0920> whose view is not in the window hierarchy!
Please note this works fine in Android, I'm only seeing issues in iOS. I'm not sure what is going on - I'm not trying to present any other windows or anything when I click the image. Regardless, the error appears before the process reaches the beginning of the On_Share method. What am I missing here?
EDIT: The method does get hit now, and I'm still getting the error. It must be trying to send up the share sheet and failing...
There was a problem with the Share plugin in the end - we resolved it by making part of the code recursive.
the GetVisibleViewController used to look like this;
UIViewController GetVisibleViewController()
{
var rootController = UIApplication.SharedApplication.KeyWindow.RootViewController;
if (rootController.PresentedViewController == null)
return rootController;
if (rootController.PresentedViewController is UINavigationController)
{
return ((UINavigationController)rootController.PresentedViewController).VisibleViewController;
}
if (rootController.PresentedViewController is UITabBarController)
{
return ((UITabBarController)rootController.PresentedViewController).SelectedViewController;
}
return rootController.PresentedViewController;
}
whereas it needed to cycle through to find the top UIViewController;
UIViewController GetVisibleViewController(UIViewController controller = null)
{
controller = controller ?? UIApplication.SharedApplication.KeyWindow.RootViewController;
if (controller.PresentedViewController == null)
return controller;
if (controller.PresentedViewController is UINavigationController)
{
return ((UINavigationController)controller.PresentedViewController).VisibleViewController;
}
if (controller.PresentedViewController is UITabBarController)
{
return ((UITabBarController)controller.PresentedViewController).SelectedViewController;
}
return GetVisibleViewController(controller.PresentedViewController);
}
I've raised the issue and submitted a pull request on the github
I am following this sample to implement a background server universal app. Here is the experimental code:
void MainPage::OnConnectionReceived(StreamSocketListener^ sender, StreamSocketListenerConnectionReceivedEventArgs^ args)
{
OutputDebugString(L"Connection received\n");
// No idea how to transfer request handling from foreground to background task!
}
void MainPage::OnNavigatedTo(NavigationEventArgs^ e)
{
// Code to register background task is omitted
auto listener = ref new StreamSocketListener();
listener->Control->QualityOfService = SocketQualityOfService::Normal;
try
{
listener->EnableTransferOwnership(Task->TaskId, SocketActivityConnectedStandbyAction::Wake);
}
catch (...)
{
OutputDebugString(L"Error: cannot transfer ownership\n");
}
listener->ConnectionReceived += ref new TypedEventHandler<StreamSocketListener^, StreamSocketListenerConnectionReceivedEventArgs^>(this, &MainPage::OnConnectionReceived);
create_task(listener->BindServiceNameAsync("56789", SocketProtectionLevel::PlainSocket))
.then([this]()
{
OutputDebugString(L"Server started on port 56789\n");
auto m_httpClient = ref new HttpClient();
auto request = ref new HttpRequestMessage(HttpMethod::Get, ref new Uri("http://" + ip + ":56789/"));
auto request_operation = m_httpClient->SendRequestAsync(request, HttpCompletionOption::ResponseContentRead);
return create_task(request_operation);
}).then([this](task<HttpResponseMessage^> previousTask)
{
try {
auto response = previousTask.get();
// Code to process the response is omitted as it is irrelevant to the question
}
catch (Exception^ ex)
{
OutputDebugString(("Error: " + ex->Message + "\n")->Data());
}
});
}
At run time, I get the error: The attempted operation is not supported for the type of object referenced. which suggests that BindServiceNameAsync fails and I have no idea why as I have followed the documentation to do EnableTransferOwnership before doing the binding. What did I do wrong here?
You are getting The attempted operation is not supported for the type of object referenced. because you are using SocketActivityConnectedStandbyAction::Wake. Change it to SocketActivityConnectedStandbyAction::DoNotWake.
The following pseudo-code should give you an idea what else you need to do to make StreamSocketListener working with SocketActivityTrigger:
// TODO: task = socketTaskBuilder.Register();
socketListener = new StreamSocketListener();
socketListener.ConnectionReceived += OnConnected;
await socketListener.BindServiceNameAsync(port);
socketListener.EnableTransferOwnership(
task.TaskId,
SocketActivityConnectedStandbyAction.DoNotWake);
// This is required, otherwise you may get error:
// A device attached to the system is not functioning.
// (Exception from HRESULT: 0x8007001F)
await socketListener.CancelIOAsync();
socketListener.TransferOwnership(socketId);
Then, in the background task do:
public async void Run(IBackgroundTaskInstance taskInstance)
{
var deferral = taskInstance.GetDeferral();
var details = taskInstance.TriggerDetails as
SocketActivityTriggerDetails;
var socketInformation = details.SocketInformation;
var streamSocket = socketInformation.StreamSocket;
var socketListener = socketInformation.StreamSocketListener;
switch (details.Reason)
{
case SocketActivityTriggerReason.ConnectionAccepted:
// TODO: read, write, etc.
break;
default:
// ...
break;
}
// ...
deferral.Complete();
}
I am working on a Windows Universal App. I Want to get the Data from a Bluetooth Device to the Windows Phone. I am Using the Concept of RFCommCommunicationTrigger for this Purpose.
Here's the code Snippet I am Using
var rfTrigger = new RfcommConnectionTrigger();
// Specify what the service ID is
rfTrigger.InboundConnection.LocalServiceId = RfcommServiceId.FromUuid(new Guid("<some_base_guid>"));
//Register RFComm trigger
var rfReg = RegisterTaskOnce(
"HWRFCommTrigger",
"BackgroundLibrary.RFBackgroundTask",
rfTrigger, null
);
SetCompletedOnce(rfReg, OnTaskCompleted);
Here the Function of RegisterTaskOnce
static private IBackgroundTaskRegistration RegisterTaskOnce(string taskName, string entryPoint, IBackgroundTrigger trigger, params IBackgroundCondition[] conditions)
{
// Validate
if (string.IsNullOrEmpty(taskName)) throw new ArgumentException("taskName");
if (string.IsNullOrEmpty(entryPoint)) throw new ArgumentException("entryPoint");
if (trigger == null) throw new ArgumentNullException("trigger");
// Look to see if the name is already registered
var existingReg = (from reg in BackgroundTaskRegistration.AllTasks
where reg.Value.Name == taskName
select reg.Value).FirstOrDefault();
Debug.WriteLine("Background task "+ taskName+" is already running in the Background");
// If already registered, just return the existing registration
if (existingReg != null)
{
return existingReg;
}
// Create the builder
var builder = new BackgroundTaskBuilder();
builder.TaskEntryPoint = entryPoint;
builder.Name = taskName;
builder.SetTrigger(trigger);
// Conditions?
if (conditions != null)
{
foreach (var condition in conditions)
{
builder.AddCondition(condition);
}
}
// Register
return builder.Register();
}
Here's the code for SetCompletedOnce this will add a Handler only once
static private void SetCompletedOnce(IBackgroundTaskRegistration reg, BackgroundTaskCompletedEventHandler handler)
{
// Validate
if (reg == null) throw new ArgumentNullException("reg");
if (handler == null) throw new ArgumentNullException("handler");
// Unsubscribe in case already subscribed
reg.Completed -= handler;
// Subscribe
reg.Completed += handler;
}
I have also Written the BackgroundLibrary.RFBackgroundTask.cs
public sealed class RFBackgroundTask : IBackgroundTask
{
public async void Run(IBackgroundTaskInstance taskInstance)
{
BackgroundTaskDeferral deferral = taskInstance.GetDeferral();
try
{
Debug.WriteLine(taskInstance.TriggerDetails.GetType());
taskInstance.Canceled += new BackgroundTaskCanceledEventHandler(OnCanceled);
Debug.WriteLine("RFComm Task Running");
Debug.WriteLine(taskInstance.TriggerDetails.GetType().ToString());
}
catch (System.Exception e)
{
Debug.WriteLine("RFComm Task Error: {0}", e.Message);
}
deferral.Complete();
}
}
The Run Method is Invoked Every Time The Device tries to Open the Connection.
The type of the Trigger that is obtained (the type I am debugging in the run method of the RFBackgroundTask.cs) is printed as
Windows.Devices.Bluetooth.Background.RfcommConnectionTriggerDetails
But I am Unable use that because I dont have this Class in the BackgroundLibrary project.
The Documentation says that this Provides information about the Bluetooth device that caused this trigger to fire.
It has Variables like Socket,RemoteDevice etc.
I think I am Missing something very simple
Can you please help me out .
Once your background task is launched, simply cast the TriggerDetails object to an RfcommConnectionTriggerDetails object:
public sealed class RFBackgroundTask : IBackgroundTask
{
public async void Run(IBackgroundTaskInstance taskInstance)
{
BackgroundTaskDeferral deferral = taskInstance.GetDeferral();
try
{
taskInstance.Canceled += new BackgroundTaskCanceledEventHandler(OnCanceled);
RfcommConnectionTriggerDetails details = (RfcommConnectionTriggerDetails)taskInstance.TriggerDetails;
StreamSocket = details.Socket; // Rfcomm Socket
// Access other properties...
}
catch (System.Exception e)
{
Debug.WriteLine("RFComm Task Error: {0}", e.Message);
}
deferral.Complete();
}
}
I'm using EMDK 2.5 (VS2008 and VC# and .NetCF3.5) Barcode2 class from the library to write a sample application to scan bar codes. I followed the samples available in EMDK namely CS_Barcode2Sample1 project.Every time I hardware trigger the scan the notification "E_SCN_READINCOMPATIBLE" is thrown and not able to retrieve the scanned data. The documentation doesn't say much about the cause of E_SCN_READINCOMPATIBLE notification and no luck from Google search. I tried several options including making use of Symbol.Barcode and the outcome is same.
I also tried EMDK 2.3 but the result is same.
I've pasted the whole code here....
public partial class Form1 : Form
{
private Barcode2 myBarcode2 = null;
public Form1()
{
InitializeComponent();
InitBarcode();
}
public bool InitBarcode()
{
// If the Barcode2 object is already initialized then fail the initialization.
if (myBarcode2 != null)
{
return false;
}
else // Else initialize the reader.
{
try
{
Symbol.Barcode2.Device[] AvailableDevices = Symbol.Barcode2.Devices.SupportedDevices;
if (AvailableDevices.Length == 0)
{
return false;
}
if (AvailableDevices.Length == 1)
{
//get the first available scanner in the list
Symbol.Barcode2.Device MyDevice = AvailableDevices[0];
// Create the reader, based on selected device.
myBarcode2 = new Barcode2(MyDevice);
// Attach a scan notification handler.
//this.myScanNotifyHandler = new Barcode2.OnScanHandler(myBarcode2_ScanNotify);
myBarcode2.OnScan += myBarcode2_ScanNotify;
// Attach a status notification handler.
//this.myStatusNotifyHandler = new Barcode2.OnStatusHandler(myBarcode2_StatusNotify);
myBarcode2.OnStatus += myBarcode2_StatusNotify;
myBarcode2.Config.TriggerMode = TRIGGERMODES.HARD;
// Submit a scan.
myBarcode2.Scan(5000);
}
}
catch (OperationFailureException ex)
{
MessageBox.Show("Exception Raised 1");
return false;
}
catch (InvalidRequestException ex)
{
MessageBox.Show("Exception Raised 2");
return false;
}
catch (InvalidIndexerException ex)
{
MessageBox.Show("Exception Raised 3");
return false;
}
}
return false;
}
private void myBarcode2_ScanNotify(ScanDataCollection scanDataCollection)
{
// Checks if the BeginInvoke method is required because the OnScan delegate is called by a different thread
if (this.InvokeRequired)
{
// Executes the OnScan delegate asynchronously on the main thread
this.BeginInvoke(new Barcode2.OnScanHandler(myBarcode2_ScanNotify), new object[] { scanDataCollection });
}
else
{
// Get ScanData
ScanData scanData = scanDataCollection.GetFirst;
int i;
switch (scanData.Result)
{
case Symbol.Barcode2.Results.SUCCESS:
String str = scanData.Text;
myBarcode2.Config.TriggerMode = TRIGGERMODES.HARD;
myBarcode2.Scan(5000);
break;
case Symbol.Barcode2.Results.E_SCN_READTIMEOUT:
break;
case Symbol.Barcode2.Results.CANCELED:
break;
case Symbol.Barcode2.Results.E_SCN_DEVICEFAILURE:
i = 93;
break;
default:
if (scanData.Result == Symbol.Barcode2.Results.E_SCN_READINCOMPATIBLE)
{
// If the failure is E_SCN_READINCOMPATIBLE, exit the application.
MessageBox.Show("Fatal Error");
this.Close();
return;
}
break;
}
}
}
private void myBarcode2_StatusNotify(StatusData statusData)
{
// Checks if the Invoke method is required because the OnStatus delegate is called by a different thread
if (this.InvokeRequired)
{
// Executes the OnStatus delegate on the main thread
this.Invoke(new Barcode2.OnStatusHandler(myBarcode2_StatusNotify), new object[] { statusData });
}
else
{
int i;
switch (statusData.State)
{
case States.IDLE:
break;
case States.READY:
break;
default:
break;
}
}
}
}
}
I've went thru this recently also, as I observed, it probably due to the scanner device is occupied by other application, where the scan request has been queued already, you can go to memory management, and kill the suspect app, and try your app again.
Refer to the Symbol FAQ