如何在Android中为整个应用程序设置自定义字体?

问题描述：

是否可以在Android应用程序中设置自定义字体?

Is it possible to set a custom font in an Android application?

我尝试在此处上发布了什么内容，但我不知道我的extends Application类在哪里...

I tried what is posted here, but I don't know where my extends Application class is...

有帮助吗?

我尝试了以下操作:

添加资产文件夹并在其中插入字体，如下所示:

添加一个从Application

从我的AndroidManifest.xml调用此新课程.

我去了我的风格并将其添加.

I went to my style and added it.

MyApp.java:

public class MyApp extends Application {
  @Override
  public void onCreate() {
     super.onCreate();
    FontsOverride.setDefaultFont(this, "DEFAULT", "raleway_regular.ttf");
    //  This FontsOverride comes from the example I posted above
  }
  }

AndroidManifest.xml:

<application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:supportsRtl="true"
      android:name=".MyApp"
      android:theme="@style/AppTheme">
     ....

styles.xml:

 <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="android:fontFamily">default</item>
 </style>

但是我的字体仍然没有变化...知道吗?

But my font is still not changning... any idea?

然后调用MyApp类.但是对我的字体没有影响...

Then the MyApp class is called. But no effect on my fonts...

EDIT2 :我意识到在为按钮设置自定义样式后，按钮会应用自定义字体.这是我的自定义按钮样式:

I realized that my buttons apply the custom font after I set a custom style for my buttons. Here is my custom button style:

<style name="MyButtonStyle" parent="Widget.AppCompat.Button">
    <item name="textAllCaps">false</item>
    <item name="android:textAllCaps">false</item>
</style>

这是现在的样子:

所以:我的按钮正在应用样式，而不是TextView.为什么我的自定义字体不能应用于应用程序中的所有项目?

So: my button is applying the style, but not the TextView. Any idea on why my custom font is not being applied for all items in application?

答

写一个类

public class MyApp extends Application{
// Put the onCreate code as you obtained from the post link you reffered
}

现在，接下来是在AndroidManifest.xml中，应用程序标记为您的应用程序类提供名称.在这种情况下是MyApp

now next thing is in AndroidManifest.xml for the application tag give name for your application class. In this case it is MyApp

<application
android:name=".MyApp"
...
>
...
</application>

因此，每当打开App时，都会调用MyApp类的onCreate方法，并设置字体.

So whenever the App is opened , onCreate method of MyApp class would be invoked , and the font would be set.

更新将字体文件放在assets/fonts/your_font_file.ttf下

Update Put font file under assets/fonts/your_font_file.ttf

将此行放在您的应用程序类(MyApp)的onCreate方法下

Put this line under onCreate method of your application class(MyApp)

TypefaceUtil.overrideFont(getApplicationContext(), "SERIF", "fonts/your_font_file.ttf");

TypefaceUtil的源文件

Source File for TypefaceUtil

public class TypefaceUtil {

    /**
     * Using reflection to override default typeface
     * NOTICE: DO NOT FORGET TO SET TYPEFACE FOR APP THEME AS DEFAULT TYPEFACE WHICH WILL BE OVERRIDDEN
     *
     * @param context                    to work with assets
     * @param defaultFontNameToOverride  for example "monospace"
     * @param customFontFileNameInAssets file name of the font from assets
     */
    public static void overrideFont(Context context, String defaultFontNameToOverride, String customFontFileNameInAssets) {

        final Typeface customFontTypeface = Typeface.createFromAsset(context.getAssets(), customFontFileNameInAssets);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Map<String, Typeface> newMap = new HashMap<String, Typeface>();
            newMap.put("serif", customFontTypeface);
            try {
                final Field staticField = Typeface.class
                        .getDeclaredField("sSystemFontMap");
                staticField.setAccessible(true);
                staticField.set(null, newMap);
            } catch (NoSuchFieldException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        } else {
            try {
                final Field defaultFontTypefaceField = Typeface.class.getDeclaredField(defaultFontNameToOverride);
                defaultFontTypefaceField.setAccessible(true);
                defaultFontTypefaceField.set(null, customFontTypeface);
            } catch (Exception e) {
                Log.e(TypefaceUtil.class.getSimpleName(), "Can not set custom font " + customFontFileNameInAssets + " instead of " + defaultFontNameToOverride);
            }
        }
    }
}

现在更新您的style.xml文件

Now update your style.xml file

将下面的行设置为清单文件中用于您的活动的样式

put the below line your style which is included for your activity in manifest file

  <item name="android:typeface">serif</item>

希望这会有所帮助

如何在Android中为整个应用程序设置自定义字体?

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