如何在 Xamarin Forms 中的按钮上创建网格

debugcn 发表于 Dev

洛珀

所以我需要创建一个自定义按钮，在我必须创建的网格上，在这个网格上我需要创建几个带有特定信息的标签。这是我将子项添加到按钮的代码

    private void HighlightTodayDay()
    {
        Label label1 = new Label()
        {
            BackgroundColor = Color.DarkRed,
            Text = "lbl1"
        };

        Label label2 = new Label()
        {
            BackgroundColor = Color.Gold,
            Text = "lbl2"
        };

        if ((DateTime.Today.Year == actualVisibleMonth.Year) && (DateTime.Today.Month == actualVisibleMonth.Month))
        {
            foreach (var child in Children.Reverse())
            {
                if (child.ClassId.ToString() == ("actualDayButtonID" + DateTime.Today.Day.ToString()) && child.IsEnabled == true)
                {
                    DayButton todayDayButton = dayButtonsList[DateTime.Today.Day + shiftOfFirstDay];
                    todayDayButton.TextColor = Color.FromHex("#0f0");
                    //upto this line everything is working as it should
                    todayDayButton.insideGrid.Children.Add(label1, 0, 0);  //do nothing
                    todayDayButton.insideGrid.Children.Add(label2, 0, 1); //do nothing
                    return;
                }
            }
        }
    }

这是来自“自定义”按钮的代码

    class DayButton : Button
{
    public string EventDate;
    public string EventStartTime;
    public string EventEndTime;
    public string EventShift;
    public string EventName;
    public string EventDescription;
    public Grid insideGrid;

    public DayButton()
    {
        insideGrid = new Grid();
        insideGrid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(1, GridUnitType.Star) });
        insideGrid.RowDefinitions.Add(new RowDefinition { Height = new GridLength(3, GridUnitType.Star) });
        insideGrid.Parent = this;
    }
}

它应该是这样的点击查看图片

洛珀

我决定关闭按钮并将其更改为堆栈布局（生病了！），我正在为这个堆栈布局添加带有事件的新标签！soo 代码如下所示：

public partial class Calendar : Grid
{...

    public delegate void OnDayClickedDelegate(DateTime dateOfClickedDay);
    public event OnDayClickedDelegate OnDayClicked;
...
        private void DayClick(DateTime clickedDate)
    {
        OnDayClicked(clickedDate);
    }
...
private void SomeVoid()
{...
 DayLayout eventInDay = dayLayoutList[dayID];
                var eventLabel = new Label
                {
                    BackgroundColor = color,
                    Text = name.ToUpper(),
                    FontSize = Device.GetNamedSize(NamedSize.Small, typeof(Label)),
                    FontAttributes = FontAttributes.Bold
                };
                eventInDay.Children.Add(eventLabel);
...}

}

和日视图

        private class DayLayout : StackLayout
    {
        public delegate void OnClickedDelegate(DateTime dateOfClickedDay);
        public event OnClickedDelegate OnClicked;

        public Label DayNumber;

        public DayLayout(DateTime day)
        {
            GestureRecognizers.Add
            (
                new TapGestureRecognizer
                {
                    Command = new Command(() => OnClicked(day))
                }
            );

            var dayNumber = new Label
            {
                HorizontalTextAlignment = TextAlignment.End,
                VerticalTextAlignment = TextAlignment.Start,
                Text = day.ToString("dd"),
                FontSize = Device.GetNamedSize(NamedSize.Micro, typeof(Label)),
                FontAttributes = FontAttributes.Bold
            };

            DayNumber = dayNumber;
            this.Children.Add(DayNumber);
        }
    }

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