rebeccaxam / xamforms.controls.calendar Goto Github PK

I have already contacted you about this, but your solution didn't seem to work.

This is how it looks like:

Even after adding calendar.RaiseSpecialDatesChanged() to my code after the special dates are added.

Thank you in advance for your attention.

I get an exception at the calender.init() after xamarin.forms.init() on a fresh windows 8.1 mobile phone project.

Current functionality:

1. If I have added 5 months in a calendar, I can select 5 different dates at one point of time(One date in each month). Date selection is provided month wise.

Do we have any option, so that if one date is selected in a calendar control(all other selected dates in other months also get deselected)

Requirement: Only one date should be selected in whole calendar control irrespective of date selected in different months.

Hi,

I'm trying to update the CalendarButton template on an action, visually it is not getting updated unless the user click that button.
Is there any visual update method which I can call to update the template of calendar button on an action?

Add documentation on Wiki for iOS platform to add "NSCalendarsUsageDescription" ("Privacy - Calendars Usage Description") before submitting your app to the App Store or it will be rejected during processing time.

(Start Month)

(End Month)

When I navigate from month to month, the days do not update properly. For example, I started in August of 2016, and the Dates/Days are correct. However, when I use the navigation arrow to go to the month of July, the days are not correct. July 13th for example, should be on a Wednesday but it is not.

Not sure if this component supports this or not, but in my particular case, I'd need something like this.

Essentially, just disable selection by default, then enable manually for each SpecialDate.

EDIT: I tried setting SelectedDate to DateTime.MinValue, in hopes of quickly deselecting dates that aren't allowed, but I guess it doesn't support two way binding, or something else is blocking it.

Hi.

I am trying to set the starting date in the calendar but I am not successful, the intention is to disable the dates below the current one.
I used StartDate and it did not work. For example, i want disable dates before 21/09/2017.
I'm running the XamForms.Controls.Calendar version "version =" 1.0.7 "

Many thanks for this great plugin!

One question: Is it possible to restrict the scrolling to the Min and Max Daterange? So when I set e.g. Min to 1st January 2017 and Max to 20th March 2017, user should only be able to see January, February and March. If on January, the left back button should be disabled. Is that possible? Currently users could go back to whatever date. Of course they are greyed out, but I want to avoid user to switch outside the date range.

Many thanks!

good plugin feature (Add year view) please

Hi! I'm trying to deal with a problem with databinding using this calendar control.

this is how my xaml code looks:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:controls="clr-namespace:XamForms.Controls;assembly=XamForms.Controls.Calendar"
             x:Class="PGapp.View.Wydarzenia.WydarzeniaKalendarz">
  <controls:Calendar SelectedDate="{Binding Datee}" DateCommand="{Binding DateChosen}" Padding="10,0,10,0" StartDay="Monday" SelectedBorderWidth="4" DisabledBorderColor="Black" BackgroundColor="White"/>
</ContentPage>

and viewmodel:

class WydarzeniaKalendarzVM : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        public void NotifyPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }

        private DateTime _Datee;
        public DateTime Datee
        {
            get
            {
                return _Datee;
            }
            set
            {
                _Datee = value;
                NotifyPropertyChanged("Datee");
            }
        }
        public ICommand DateChosen { get; set; }

        
        public WydarzeniaKalendarzVM(INavigation navigation)
        {
            DateChosen = new Command(DateChosenCmd);
        }

        public void DateChosenCmd()
        {
            DateTime aaa = Datee;
        }
    }

the problem is that SelectedDate is always returning Date 01.01.0001. Am I doing something wrong?

(of course the binding is set in WydarzeniaKalendarz.xaml.cs file:
this.BindingContext = new WydarzeniaKalendarzVM(this.Navigation);

Hello? How to SpecialDates click?

Again, wiping out the whole month navigation seems like overkill for this.

I think I can do this with a pull request.

Every now and again my app throws the following exception on launch.

  at Xamarin.Forms.BindableObject.GetContext (Xamarin.Forms.BindableProperty property) [0x00013] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Core\BindableObject.cs:489 
  at Xamarin.Forms.BindableObject.GetValue (Xamarin.Forms.BindableProperty property) [0x0000e] in C:\BuildAgent2\work\ca3766cfc22354a1\Xamarin.Forms.Core\BindableObject.cs:54 
  at XamForms.Controls.Calendar.get_DatesFontSize () [0x00000] in <b9a77dab63a24ffd9c36ae26640eec47>:0 
  at XamForms.Controls.Calendar.FillCalendarWindows () [0x000b5] in <b9a77dab63a24ffd9c36ae26640eec47>:0 
  at XamForms.Controls.Calendar.<FillCalendar>m__3 () [0x00000] in <b9a77dab63a24ffd9c36ae26640eec47>:0 
  at System.Threading.Tasks.Task.InnerInvoke () [0x00012] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2879 
  at System.Threading.Tasks.Task.Execute () [0x00016] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/threading/Tasks/Task.cs:2502 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143 
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00047] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/_ios-build/Library/Frameworks/Xamarin.iOS.framework/Versions/git/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113 
  at XamForms.Controls.Calendar+<OnParentSet>c__async0.MoveNext () [0x0008b] in <b9a77dab63a24ffd9c36ae26640eec47>:0 
--- End of stack trace from previous location where exception was thrown ---
  at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
  at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/src/UIKit/UIApplication.cs:79 
  at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/3969/7beaef43/source/xamarin-macios/src/UIKit/UIApplication.cs:63 
  at App.iOS.Application.Main (System.String[] args) [0x00008] in /Users/dids/Work/Xamarin/App/iOS/Main.cs:17 

The amount of days in a month that's displayed is always 31, no matter the month. The "DaysNotInMonth" is not correctly displayed either; for quite a lot of months, the days that are in "the next month" range from the 26th to the 2nd. For some months, days of the next month are in the current month (1st and 2nd of the next month, mostly) (see attached screenshots).

Hello,

Thanks a lot for your component. When using this plug in, I found out that whenever I change the current month to next month or previous month, the special dates backgrounds in the current month still appear in the same spots in next month or previous month even though there are no special dates in next month or previous month. Could you please show me how to resolve this?

Thanks in advance.

Sometimes, because it depends on the size of the container (try resizing UWP form):

I'm using MVVMLight for Bindings, and in the AttendancesPage.xaml I have:

<controls:Calendar x:Name="Calendar" SpecialDates="{Binding Attendances}" 
	Padding="10,0,10,0" 
	StartDay="Sunday" 
	SelectedBorderWidth="1" 
	DisabledBorderColor="Black">
</controls:Calendar>

Using my AttendanceViewModel, with the following code:

#region Private Fields
private ObservableCollection<SpecialDate> attendances;
#endregion

#region Dependency Properties
private const string AttendancesPropertyName = "Attendances";
#endregion

#region Properties
public ObservableCollection<SpecialDate> Attendances
{
	get { return attendances; }
	set { Set(AttendancesPropertyName, ref attendances, value); }
}
#endregion

#region Private Fields
private readonly IWorkoutService workoutService;
private readonly UserModel authUser;
#endregion

#region Constructor
public AttendanceViewModel(IWorkoutService workoutService, UserModel authUser)
{
	this.workoutService = workoutService;
	this.authUser = authUser;
}
#endregion

#region IPageLifecicleEvents
public async Task OnAppearing()
{
	IsBusy = true;

	var dates = new List<SpecialDate>();

	var specialDate = new SpecialDate(new DateTime(2017, 03, 13));
	specialDate.BackgroundColor = Color.Green;
	specialDate.TextColor = Color.White;

	dates.Add(specialDate);

	Attendances = new ObservableCollection<SpecialDate>(dates);

	IsBusy = false;
}
#endregion

When I set Attendances property, the Calendar doesn't change. If I use the same OnAppearing method on AttendancesPage.xaml.cs, it works...

How can I use Binding to show SpecialDates on Calendar?

Labels and buttons are not displayed properly because a part of them is cut off. This is more evident in the UWP platform, but also in Android the day labels are not completely visible. Here are two screenshots:

Specifically, allow us to set the FontFamily once for the entire calendar, or even better, individually for "in month" dates, "out of month" dates, and the day labels.

Error is The Type initializer for "XamForms.Controls.Calendar" threw an exception

thank you ！

Hi i've added your calendar to my app and i love it!!! will you improve it with the number of the week? i need this functionality . thank you very much

Hi. Is there any way to display weekdays on the top of a calendar. Then display the title of the month. Please refer the attached screenshot for m

ore details

Using either option in XAML results in this runtime message:

Cannot assign property "SelectedBackgroundColor": Property does not exists, or is not assignable, or mismatching type between value and property.

or

Cannot assign property "SelectedTextColor": Property does not exists, or is not assignable, or mismatching type between value and property.

How can I set the selected background and text colour?

I need to get events to fill the calendar, how can I know which is the date of the first day in the calendar? Even if it is gray, as in, not from the month being displayed? At the same time, how can I get the last day being displayed?

Image for clarification.

Thanks in advance for the amazing tool you have developed.

How I can make a text note for each day? like the question #32 easy to usefully. And the text note can binding with string of array on view model. And we can insert a small images. The image under show you how can we do?

There's one weird procedure you can follow to cause multiple dates to be selected on the same screen even when this is supposedly disabled:

1. Set MultiSelectDates=false
2. Select a date in a month which will NOT be visible when you switch forward to the following month (Nov 15 2016)
3. Switch to the following month (December)
4. Select a date which will be visible in the preceding month (Dec 2nd 2016)
5. Switch back to the preceding month (November)
6. See that both Nov 15 2016 and Dec 2 2016 are selected

It looks like this is probably caused by not clearing out the SelectedDates when a new month is picked out. If that were done it would also prevent different months from showing their own individual selected dates as happens right now, which seems like unintended behavior. However, I do like that when you have for example Dec 2 2016 selected while you're viewing the month of Nov, if you switch over to December view Dec 2 2016 remains selected, which might get broken by my fix. I'm getting a little confused in lines 796-811 of Calendar.xaml.cs though but I'll come back to look at this later.

First we want to say thanks for this great plugin.
We test the application with this pluging on a iPhone 4 with IOS 7 and the application crash when loads de calender.
The questions is if exists a mínimum version of OS in iphone for this pluging.

How i can increase calendar cell height in xamarin forms..?
i am stuck in that point .
please guide me..

Hello, awesome control, thankyou.

Currently my app/calender does not allow to select previous dates from the current day. I display an alert to notifiy that the user is not allow to select previous dates.. I have Multiple select enabled to true. Once the dialog is closes the date is still selected and the background color is set to red.

I would like to deselect the the date and not have the background color in that date cell.

is there a way to deselect a date from c#

thanks

I am selecting multiple dates and wanted to add appointments. What properties can I use for this?

Hi Rebecca, thanks for the brilliant control.
I think there may be an issue with initially selecting a date for the control.
When initializing the control if a date is selected (today's date for example)...
Firstly, when the page opens, there is no highlight on the selected date (not sure if this was intentional or not).
Secondly, if the same date (today's date) is selected (by clicking on it) it becomes highlighted, This is not too bad, but the control's Selected Date property has now become null.
After this, selecting/unselecting the same date, the logic seems fine.
I have tested on Android and Windows Universal and the issue is the same.
Please let me know if you need any more information.
Thanks again.

Can someone show the usage of how to make the special date background has multicoloured or insert a customised image?
Like Date 15th.

Hello,

When I turn on "MultiSelectDates" and bind to the "SelectedDates" Property (public ObservableCollection SelectedDates) I get, when opening the Calendar, an "Object reference not set to an instance of an object" exception on both iOS and Android. I am using the newest Xamarin.Forms version 2.3.3.175

I'm seeing the same behavior described in #2 but on iOS (that issue was concentrated on UWP). This module is awesome on Android.

XamForms.Controls.Calendar/Calendar.NumberOfWeek.cs

var weekNum = ciCurr.Calendar.GetWeekOfYear(start, CalendarWeekRule.FirstFourDayWeek, StartDay);

The week labels are set by default to CalendarWeekRule.FirstFourDayWeek.
I couldn't find a way to set the calenderweekrule to first full week.

When I am using 5 different calendar controls to display more than once calendar month, I have implemented your suggestion using the calendar view model to select only one date at a time in all the calendar controls. I am facing one new issue in android devices. Sometimes Date Clicked event is hitting twice on selecting few dates in a given month. For February 2016, when selecting the dates from1st Feb 2016 to 6th Feb, DateClicked event is triggered twice, where as from Feb 7th to 27th 2016 is triggered only once.
Note: I am seeing this issue after implementing Calendar view model for selecting only one date at a time in all the calendar controls. This is in reference to #25

Hello,

sometimes I get completely random crashes, the problem is that I can't debug them or fix them because I have no clue where to start.
Here's a StackTrace from Mobile Center.

Xamarin.Forms / happens only on Android.

ThrowHelper.ThrowInvalidOperationException (System.ExceptionResource resource)
List`1+Enumerator[T].MoveNextRare ()
List`1+Enumerator[T].MoveNext ()
Enumerable.TryGetFirst[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate, System.Boolean& found)
Enumerable.FirstOrDefault[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate)
Calendar+<ChangeCalendar>c__AnonStorey7.<>m__0 ()
Thread+RunnableImplementor.Run ()
IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this)
(wrapper dynamic-method) System.Object:71e19f9c-e626-431a-8741-76f2e9d766a8 (intptr,intptr)

Does anyone experience something like this?

1. In code, make Jan 1 2017 a special date
2. In the app, navigate to December
3. Tap/select Nov 27
4. Navigate to January
5. Jan 1 will be highlighted as a special date and as though it were selected

I'm going to come back and take a look at this soon.

    This Calendar is working properly with static specialdates list in Android device and emulator. On dynamic specialdates dates from database is working in emulator but Application crashing on Android device. 

issuecalendar.txt

I have added a calendar to my XAML code (Xamarin.Forms on Android project), and in the constructor for the page I add several SpecialDates to the list. I have also tried to add them in the OnAppearing function with the same effect.

When the calendar is initially drawn the dates are not highlighted.

BUT, if I click to another month and back again they are shown highlighted correctly.
Also if I click on a date that I know it in the list it is highlighted correctly.

Any ideas?

Edit: Using the NuGet package v1.0.5

Is it possible at the moment to have multi language for the calendar?

Hi, thank you for great calendar!
I am trying to create something like "Today" Button. Everything works fine, if actual date is loaded on screen, means I am on actual month, or on previous/next month and actual day is still visible (is part last/first week of month).
Is there any chance to create some method, which will switch month to actual month, and Select today date?

If this functionality is already in your package and I am just only blind, let me know, how to achieve this behavior.

Thanks a lot

jslady

Hello, I need to change textlabel.
It is possible to change "May 2017" by May? thank you very much

Hi,
Is it possible to change the calendar header style. We tried, but couldn't change only the header style, rest all other background, textcolor etc.. can be changed.

Hi,

I installed the component (v.1.0.3) with NuGet from Visual Studio 2015 Update 3, adding it to all projects in a Xamarin Forms (v.2.3.0.107) solution, but there are some issues:

• when running on Windows 10 either the UWP or Win8.1 projects, I get the following error: WinRT information: Cannot locate resource from ‘ms-appx:///XamForms.Controls.Calendar.UWP/Resources.xaml’.
• the XamForms.Controls.Calendar.iOS isn't added to the iOS project. I had to add it manually to the references. I don't have a MAC at hand at the moment, so not sure if it's due to that.

I downloaded the code, updated to Xamarin Forms 2.3.0.107, and ran the sample and it works fine on Windows 10. Droid version also runs fine on Android device.

P.S. Also a note on the XAML sample in readme: shouldn't it say "<controls:Calendar Padding=..." instead of "<controls:CalendarControl Padding=" ?

I know it's possible to totally wipe out the MonthNavigationLayout but all I want to do is turn off the bolding of the month, so it seems like overkill to do that.

It would be nice if we could select multiple dates (drag select).
Is there anything planned in this concern?

Hi.
Firstly thanks for developing this lib which is useful for my application.

I wonder if it is possible to change the color of the arrows that change the calendar months, is currently red.