我正在尝试制作日历,我想向用户显示有关在特定日期存储什么事件的某种信息。我当时正在考虑使用带有小点的颜色为其活动选择颜色,但我似乎并没有找到办法,即使有可能... 我有这个: 我想要这样的东西:
有人可以帮助我,或给我一些提示吗?
答案 0 :(得分:1)
您可以尝试使用第三方库material-calendarview来实现此功能,它提供了DayViewDecorators类来自定义个别日子:
DotSpan
,它将在文本下方居中绘制一个点由于您正在使用Xamarin.Android
,因此可以通过Binding a Java Library在Xamarin.Android
项目中使用此Java库。
顺便说一下,其他人为您完成了这项工作:https://github.com/NAXAM/materialcalendarview-xamarin-android-binding,您可以直接将其安装在nuget package中。
在XAML
中使用它:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.prolificinteractive.materialcalendarview.MaterialCalendarView
android:id="@+id/calendar_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:background="@drawable/bg_custom_date_picker"
app:mcv_selectionColor="@color/colorAccent"
app:mcv_showOtherDates="other_months"
android:layout_marginBottom="16dp"/>
</LinearLayout>
在您的代码中:
public class CalendarActivity : AppCompatActivity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_calendar);
MaterialCalendarView calendar = FindViewById<MaterialCalendarView>(Resource.Id.calendar_view);
calendar.SetSelectedDate(Java.Util.Calendar.GetInstance(Java.Util.Locale.English));
List<CalendarDay> dates = new List<CalendarDay>();
CalendarDay a = CalendarDay.From(2018, 11, 10);
CalendarDay b = CalendarDay.From(2018, 11, 15);
CalendarDay c = CalendarDay.From(2018, 11, 9);
CalendarDay d = CalendarDay.From(2018, 11, 1);
dates.Add(a);
dates.Add(b);
dates.Add(c);
dates.Add(d);
calendar.AddDecorators(new EventDecorator(this, Color.Red, dates));
}
class EventDecorator : Java.Lang.Object, IDayViewDecorator
{
private int color;
private List<CalendarDay> dates;
public EventDecorator(CalendarActivity calendarActivity, int color, List<CalendarDay> dates)
{
this.color = color;
this.dates = dates;
}
public void Decorate(DayViewFacade view)
{
view.AddSpan(new DotSpan(15, color));
}
public bool ShouldDecorate(CalendarDay day)
{
//return dates.Contains(day);
//Has issue when using the above code: https://stackoverflow.com/questions/45193268/adding-decorations-using-materialcalendarview-binding-library-in-xamarin-android/45207338#45207338
if (dates[0].ToString() == day.ToString() || dates[1].ToString() == day.ToString() || dates[2].ToString() == day.ToString() || dates[3].ToString() == day.ToString())
{
return true;
}
else
{
return false;
}
}
}
}