如何使Label显示带有不同颜色字母的FormattedString? [英] How to make a Label display a FormattedString with letters of different color?

问题描述

我正在使用FormattedString在Xamarin.Forms的Label上显示自定义文本.我试图实现的是更改一个或多个元素的颜色，例如: $$ $$.但是，即使我更改颜色，标签也只会显示所有具有相同颜色的美元符号:$$$$

I am using a FormattedString to Display a customized text on a Label on Xamarin.Forms. What I am trying to achieve is to change the color of one or more of the elements, for example: $$$$. But even though I am changing the color the Label just displays all the dollar symbols with the same color: $$$$

这是视图上的标签:

<Label Text="{Binding AveragePrice, StringFormat='{0}'}" HorizontalTextAlignment="Center" />

这是绑定到ViewModel上标签文本的属性的代码

And this is the code of the property bound to the label text on the ViewModel

public FormattedString AveragePrice
{
    get
    {
        return new FormattedString
        {
            Spans =
            {
                new Span { Text = "$", ForegroundColor=Color.Black },
                new Span { Text = "$", ForegroundColor=Color.Black },
                new Span { Text = "$", ForegroundColor=Color.Gray },
                new Span { Text = "$", ForegroundColor=Color.Gray }
            }
        };
    }
}

为什么此代码不会更改美元符号的颜色?我该如何实现?

Why this code doesn't change the color of the dollar symbols? How can I make it happen?

推荐答案

将AveragePrice绑定到FormattedText属性，然后删除StringFormat.

Bind AveragePrice to the FormattedText property, and remove the StringFormat.

<Label FormattedText="{Binding AveragePrice}" HorizontalTextAlignment="Center" />

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