Xamarin.Android-android:fontFamily不起作用 [英] Xamarin.Android - android:fontFamily doesn't work

问题描述

我需要使用android:fontFamily更改textView字体. 问题是它给了我错误，我不知道为什么

I need to change textView font using android:fontFamily. The problem is that it gives me errors and I have no idea why

我的代码:

  <TextView
                android:text="Arial font"
                android:textSize="8pt"
                android:fontFamily="@font/arial"
                android:layout_marginTop="4pt"/>

我实际上尝试了所有操作:在Assets文件夹中添加Arial.ttf，在Assets中创建了字体文件夹，尝试更改属性，尝试在android:fontFamily中使用"arial.ttf"而不是"arial"，但没有任何效果

I tried literally everything: added Arial.ttf on Assets folder, created a font folder in Assets, tried to change properties, tried to use "arial.ttf" instead of "arial" in android:fontFamily, but nothing has worked.

推荐答案

仅API-26和更高版本提供支持:

• 将字体文件添加到Resources/font目录

  对于 API-26 + ，仅支持使用android:fontFamily很好:

  For API-26+ only support using android:fontFamily is fine:

  android:fontFamily="@font/tastysushi"

  • 添加Xamarin.Android.Support.Compat程序包(v26或更高版本)

  • Add the Xamarin.Android.Support.Compat package (v26 or higher)

  如果在AXML布局中使用fontFamily，则添加Xamarin.Android.Support.v7.AppCompat包(v26 +)(否则，您可以以编程方式分配字体系列并使用Activity子类)

  Add the Xamarin.Android.Support.v7.AppCompat package (v26+) if you are using fontFamily in your AXML layouts (otherwise you can programmatically assign the font family and use Activity subclasses)

  您的活动必须是AppCompatActivity的子类，才能使基于layout/AXML的app:fontFamily属性起作用

  Your activity must be a subclass of AppCompatActivity in order for the layout/AXML-based app:fontFamily attribute to work

  在Resources/font目录中添加字体文件

   |-Resources
   |  |-font
   |  |  |-tastysushi.ttf
  

• 可选，但很方便，可以在Resources/font目录中创建字体系列xml文件(必须定义android和app命名空间)

• Optional, but handy, create a font family xml file in Resources/font directory (both android and app namespaces must be defined)

  <!-- Resource/font/sushi.xml -->    
  <?xml version="1.0" encoding="UTF-8" ?>
  <font-family 
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto">
  <font
      android:fontStyle="normal"
      android:fontWeight="400"
      android:font="@font/tastysushi"
  
      app:fontStyle="normal"
      app:fontWeight="400"
      app:font="@font/tastysushi"
  />
  

  注意:您还可以在字体系列中添加粗体和斜体font元素...，并为每个字体分配与相同字体系列不同的字体文件...

  Note: You can add bold and italic font elements also to the font family... and assign each one a different font file from the same family of fonts...

  在布局文件的顶部元素中添加app:命名空间:

  In top element of your layout file add the app: namespace:

  xmlns:app="http://schemas.android.com/apk/res-auto"

  现在fontFamily属性必须用于使用app:命名空间

  Now the fontFamily attribute must use to use the app: namespace

  app:fontFamily="@font/sushi"

  注意:@font/可以引用实际的字体文件或基于xml的字体系列文件

  Note: The @font/ can either reference the actual font file or the xml-based font family file

  注意:您还可以将字体嵌入样式中，因此不必用字体系列填充每个AXML元素...

  Note: You can also embed the fonts in styles so you do not have to populate each AXML element with the font family...

  这篇关于Xamarin.Android-android:fontFamily不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！