Question

I have what I believe is a pretty straightforward Monotouch.Dialog class.

public partial class EditAccountDialog : DialogViewController
{
    Section emailSection;
    Section passwordSection;
    Section profileSection;
    Section addressSection;

    EntryElement emailEntry;
    EntryElement passwordEntry;
    EntryElement password2Entry;
    EntryElement firstNameEntry;
    EntryElement lastNameEntry;
    EntryElement phoneNumberEntry;
    EntryElement streetEntry;
    EntryElement street2Entry;
    EntryElement cityEntry;
    EntryElement stateEntry;
    EntryElement zipEntry;

    public EditAccountDialog(bool pushing) : base (UITableViewStyle.Grouped, null, pushing)
    {
        emailEntry = new EntryElement(null, "[e-mail]", String.Empty);
        passwordEntry = new EntryElement (null, "Password", String.Empty, true);
        password2Entry = new EntryElement (null, "Re-enter password", String.Empty, true);
        firstNameEntry = new EntryElement ("First Name", "First Name", String.Empty);
        lastNameEntry = new EntryElement ("Last Name", "Last Name", String.Empty);
        phoneNumberEntry = new EntryElement ("Phone Number", "###-###-####", String.Empty);
        streetEntry = new EntryElement ("Street", "#### Any St.", String.Empty);
        street2Entry = new EntryElement ("Street 2", "Apt #", String.Empty);
        cityEntry = new EntryElement ("City", "City", String.Empty);
        stateEntry = new EntryElement ("State", "State", String.Empty);
        zipEntry = new EntryElement ("ZIP Code", "#####", String.Empty);

        emailSection = new Section ("Email"){
            emailEntry,
        };

        passwordSection = new Section ("Password"){
            passwordEntry,
            password2Entry,
        };

        profileSection = new Section("Profile") {
            firstNameEntry,
            lastNameEntry,
            phoneNumberEntry,
        };

        addressSection = new Section("Address") {
            streetEntry,
            street2Entry,
            cityEntry,
            stateEntry,
            zipEntry,
        };

        Root = new RootElement("Edit Account") {
            emailSection,
            passwordSection,
            profileSection,
            addressSection,
        };
    }

    public virtual void HandleGetAccountResponse(GetAccountResponse response)
    {
        emailEntry.Value = response.Email;
        firstNameEntry.Value = response.FirstName;
        lastNameEntry.Value = response.LastName;
        phoneNumberEntry.Value = response.Phone;
        streetEntry.Value = response.StreetAdd;
        street2Entry.Value = response.StreetAdd2;
        cityEntry.Value = response.City;
        stateEntry.Value = response.State;
        zipEntry.Value = response.Zip;
    }
}

After the page loads, I asynchronously call a REST API for existing account information, which then calls HandleGetAccountResponse above to pre-populate every EntryElement in the Dialog.

I inspect the REST response and know that I am receiving all of the necessary data. The problem that I am running into is that one or two random cells on this page appear to be blank, even after their values have been set. For example, the Zip and City fields might appear to be blank.

What is even more confusing is that, if I scroll to the bottom and see that the Zip and City fields are blank, then scroll all the way back up, then scroll to the bottom again, a different set of cells might be blank, such as Street2 and State.

Obviously this isn’t normal behavior for Monotouch.Dialog or no one would use it. What can I do to resolve this problem?

Answer 1

Based on a test sample that was sent back to me by Xamarin engineers, I was ultimately able to solve this problem by changing the following lines:

    emailEntry = new EntryElement(null, "[e-mail]", String.Empty);
    passwordEntry = new EntryElement (null, "Password", String.Empty, true);
    password2Entry = new EntryElement (null, "Re-enter password", String.Empty, true);

To this:

    emailEntry = new EntryElement(" ", "[e-mail]", String.Empty);
    passwordEntry = new EntryElement (" ", "Password", String.Empty, true);
    password2Entry = new EntryElement (" ", "Re-enter password", String.Empty, true);

Please note that is a string with exactly one space. I tried doing it with String.Empty or just an empty string like "", which is the more intuitive idea, but they exhibit the same problem.