[英]How to create a custom font size in xaml using Xamarin, so that you can change font sizes depending on device?
Is there are way to create a custom fontsize that would work the same as Micro or Small or Title that are already built into Xamarin.有没有办法创建一个自定义字体大小,它的工作方式与 Xamarin 中已经内置的 Micro 或 Small 或 Title 相同。 I want to be able to use it like the following:我希望能够像下面这样使用它:
<Label Text="Test" FontSize="MyFontSize"/>
I think it would be implemented something like the following inside my resource dictionary but it isn't working:我认为它将在我的资源字典中实现如下内容,但它不起作用:
<FontSize x:Key="MyFontSize">
<OnPlatform x:TypeArguments="FontSize">
<On Platform="UWP">25</On>
<On Platform="iOS">12</On>
</OnPlatform>
</FontSize>
The error says:错误说:
"The type FontSize can not be found" “找不到类型 FontSize”
It's not a runtime error.这不是运行时错误。 It's just a green underline in the XAML editor.它只是 XAML 编辑器中的绿色下划线。
Can it be done?可以做到吗?
You need to use x:Double
instead:您需要使用x:Double
代替:
<OnPlatform x:Key="MyFontSize" x:TypeArguments="x:Double">
<On Platform="UWP">25</On>
<On Platform="iOS">12</On>
</OnPlatform>
And then reference the resource like this:然后像这样引用资源:
<Label Text="Test" FontSize="{StaticResource MyFontSize}"/>
Or you can specify it directly on the view:或者您可以直接在视图上指定它:
<Label Text="Test">
<Label.FontSize>
<OnPlatform x:TypeArguments="x:Double">
<On Platform="UWP">25</On>
<On Platform="iOS">12</On>
</OnPlatform>
</Label.FontSize>
</Label>
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