使用Xamarin Android（7.0）c＃创建日历事件创建事件时出错

Question

Hi I am trying to debug a problem here and really struggling.

ContentValues eventValues = new ContentValues();
        eventValues.Put(CalendarContract.Events.InterfaceConsts.CalendarId, -1);
        eventValues.Put(CalendarContract.Events.InterfaceConsts.Title, title);
        eventValues.Put(CalendarContract.Events.InterfaceConsts.Description, desc);
        eventValues.Put(CalendarContract.Events.InterfaceConsts.Dtstart, GetDateTimeMS(year, month, day, starthr, startmin));
        eventValues.Put(CalendarContract.Events.InterfaceConsts.Dtend, GetDateTimeMS(year, month, day, stophr, stopmin));
        eventValues.Put(CalendarContract.Events.InterfaceConsts.HasAlarm, true);
        eventValues.Put(CalendarContract.Events.InterfaceConsts.EventTimezone, "Local");
        eventValues.Put(CalendarContract.Events.InterfaceConsts.EventEndTimezone, "Local");
        //  eventValues.Put(CalendarContract.Events.InterfaceConsts.AllowedReminders, true);
        var eventUri = ContentResolver.Insert(CalendarContract.Events.ContentUri, eventValues);
        long eventID = long.Parse(eventUri.LastPathSegment);
        ContentValues reminderValues = new ContentValues();
        reminderValues.Put(CalendarContract.Reminders.InterfaceConsts.CalendarId, -1);
        reminderValues.Put(CalendarContract.Reminders.InterfaceConsts.EventId, eventID);
        reminderValues.Put(
              CalendarContract.Reminders.InterfaceConsts.Method,
              (int)RemindersMethod.Alert
            );
        reminderValues.Put(CalendarContract.Reminders.InterfaceConsts.Minutes, 5);

It crashes out at this line: var eventUri = ContentResolver.Insert(CalendarContract.Events.ContentUri, eventValues);

with the error : Java.Lang.IllegalArgumentException: Unknown URL content://com.android.calendar/calendars/-1

Im testing on a Samsung Galaxy Edge G925F

Answer 1

Ok the answer was pritty simple.

1. I had not specified a sensible CalendarId the default for most androids is 1 or 3. I would use 3 because on some models 1 is reserved for birthday events. (unless its a birthday you want..)

2. The date formatter has been doing things a little wrong. Instead of specifiying a month, the JSON pull event was removing leading 0's hence making 09 just 9. This was causing issues so just went ahead and put a if statement and specified the month explicitly.

    long GetDateTimeMS(int yr, int month, int day, int hr, int min) { Java.Util.Calendar c = Java.Util.Calendar.GetInstance(Java.Util.TimeZone.Default); c.Set(Java.Util.Calendar.DayOfMonth,day); c.Set(Java.Util.Calendar.HourOfDay, hr); c.Set(Java.Util.Calendar.Minute, min); if (month == 1) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.January); } else if (month == 2) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.February); } else if (month == 3) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.March); } else if (month == 4) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.April); } else if (month == 5) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.May); } else if (month == 6) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.June); } else if (month == 7) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.July); } else if (month == 8) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.August); } else if (month == 9) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.September); } else if (month == 10) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.October); } else if (month == 11) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.November); } else if (month == 12) { c.Set(Java.Util.Calendar.Month, Java.Util.Calendar.December); } c.Set(Java.Util.Calendar.Year,yr); return c.TimeInMillis; } 

I hope that helps others out of a jam.