是否可以为整个应用程序设置自定义字体?

发布于 2024-08-30 14:54:49 字数 97 浏览 13 评论 0 原文

我需要在整个应用程序中使用某种字体。我有相同的 .ttf 文件。 是否可以在应用程序启动时将其设置为默认字体,然后在应用程序的其他地方使用它?设置后,如何在布局 XML 中使用它?

I need to use certain font for my entire application. I have .ttf file for the same.
Is it possible to set this as default font, at application start up and then use it elsewhere in the application? When set, how do I use it in my layout XMLs?

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傲娇萝莉攻 2024-09-06 14:54:49

是的,有反思。这是可行的(基于此答案):(

注意:这是一种解决方法,因为缺乏对自定义字体的支持,因此如果您想改变这种情况,请给 android 问题在这里)。 注意:不要在该问题上留下“我也是”评论,当您这样做时,每个关注该问题的人都会收到一封电子邮件。所以请给它“加注星标”。

import java.lang.reflect.Field;
import android.content.Context;
import android.graphics.Typeface;

public final class FontsOverride {

    public static void setDefaultFont(Context context,
            String staticTypefaceFieldName, String fontAssetName) {
        final Typeface regular = Typeface.createFromAsset(context.getAssets(),
                fontAssetName);
        replaceFont(staticTypefaceFieldName, regular);
    }

    protected static void replaceFont(String staticTypefaceFieldName,
            final Typeface newTypeface) {
        try {
            final Field staticField = Typeface.class
                    .getDeclaredField(staticTypefaceFieldName);
            staticField.setAccessible(true);
            staticField.set(null, newTypeface);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

然后,您需要重载一些默认字体,例如在 应用程序 中class:

public final class Application extends android.app.Application {
    @Override
    public void onCreate() {
        super.onCreate();
        FontsOverride.setDefaultFont(this, "DEFAULT", "MyFontAsset.ttf");
        FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf");
        FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf");
        FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf");
    }
}

或者当然,如果您使用相同的字体文件,您可以对此进行改进以仅加载一次。

然而,我倾向于只覆盖一个,比如“MONOSPACE”,然后设置一种样式来强制该字体应用程序广泛使用:

<resources>
    <style name="AppBaseTheme" parent="android:Theme.Light">
    </style>

    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme">
        <item name="android:typeface">monospace</item>
    </style>
</resources>

API 21 Android 5.0

我已经调查了评论中的报告,它没有不起作用,并且它似乎与主题 android:Theme.Material.Light 不兼容。

如果该主题对您不重要,请使用较旧的主题,例如:

<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
    <item name="android:typeface">monospace</item>
</style>

Yes with reflection. This works (based on this answer):

(Note: this is a workaround due to lack of support for custom fonts, so if you want to change this situation please do star to up-vote the android issue here). Note: Do not leave "me too" comments on that issue, everyone who has stared it gets an email when you do that. So just "star" it please.

import java.lang.reflect.Field;
import android.content.Context;
import android.graphics.Typeface;

public final class FontsOverride {

    public static void setDefaultFont(Context context,
            String staticTypefaceFieldName, String fontAssetName) {
        final Typeface regular = Typeface.createFromAsset(context.getAssets(),
                fontAssetName);
        replaceFont(staticTypefaceFieldName, regular);
    }

    protected static void replaceFont(String staticTypefaceFieldName,
            final Typeface newTypeface) {
        try {
            final Field staticField = Typeface.class
                    .getDeclaredField(staticTypefaceFieldName);
            staticField.setAccessible(true);
            staticField.set(null, newTypeface);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

You then need to overload the few default fonts, for example in an application class:

public final class Application extends android.app.Application {
    @Override
    public void onCreate() {
        super.onCreate();
        FontsOverride.setDefaultFont(this, "DEFAULT", "MyFontAsset.ttf");
        FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf");
        FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf");
        FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf");
    }
}

Or course if you are using the same font file, you can improve on this to load it just once.

However I tend to just override one, say "MONOSPACE", then set up a style to force that font typeface application wide:

<resources>
    <style name="AppBaseTheme" parent="android:Theme.Light">
    </style>

    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme">
        <item name="android:typeface">monospace</item>
    </style>
</resources>

API 21 Android 5.0

I've investigated the reports in the comments that it doesn't work and it appears to be incompatible with the theme android:Theme.Material.Light.

If that theme is not important to you, use an older theme, e.g.:

<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
    <item name="android:typeface">monospace</item>
</style>
淑女气质 2024-09-06 14:54:49

android 中有一个很棒的自定义字体库:Calligraphy

这里是如何使用它的示例。

在 Gradle 中,您需要将此行放入应用程序的 build.gradle 文件中:

dependencies {
    compile 'uk.co.chrisjenx:calligraphy:2.2.0'
}

然后创建一个扩展 Application 的类并编写此代码:

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();

        CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
                        .setDefaultFontPath("your font path")
                        .setFontAttrId(R.attr.fontPath)
                        .build()
        );
    }
} 

并在 Activity 类中将此方法放在 onCreate:

@Override
protected void attachBaseContext(Context newBase) {
    super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
}

和最后一个之前你的清单文件应该看起来像这样:

<application
   .
   .
   .
   android:name=".App">

它会将整个活动更改为你的字体!简单又干净!

There is a great library for custom fonts in android:Calligraphy

here is a sample how to use it.

in Gradle you need to put this line into your app's build.gradle file:

dependencies {
    compile 'uk.co.chrisjenx:calligraphy:2.2.0'
}

and then make a class that extends Application and write this code:

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();

        CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
                        .setDefaultFontPath("your font path")
                        .setFontAttrId(R.attr.fontPath)
                        .build()
        );
    }
} 

and in the activity class put this method before onCreate:

@Override
protected void attachBaseContext(Context newBase) {
    super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
}

and the last thing your manifest file should look like this:

<application
   .
   .
   .
   android:name=".App">

and it will change the whole activity to your font! it's simple and clean!

触ぅ动初心 2024-09-06 14:54:49

虽然这不适用于整个应用程序,但它适用于活动,并且可以重新用于任何其他活动。感谢@FR073N,我更新了我的代码以支持其他视图。我不确定 ButtonsRadioGroups 等的问题,因为这些类都扩展了 TextView,所以它们应该可以正常工作。我添加了一个布尔条件来使用反射,因为它看起来非常h​​ackish并且可能会显着影响性能。

注意:正如所指出的,这不适用于动态内容!为此,可以使用 onCreateViewgetView 方法调用此方法,但需要额外的工作。

/**
 * Recursively sets a {@link Typeface} to all
 * {@link TextView}s in a {@link ViewGroup}.
 */
public static final void setAppFont(ViewGroup mContainer, Typeface mFont, boolean reflect)
{
    if (mContainer == null || mFont == null) return;

    final int mCount = mContainer.getChildCount();

    // Loop through all of the children.
    for (int i = 0; i < mCount; ++i)
    {
        final View mChild = mContainer.getChildAt(i);
        if (mChild instanceof TextView)
        {
            // Set the font if it is a TextView.
            ((TextView) mChild).setTypeface(mFont);
        }
        else if (mChild instanceof ViewGroup)
        {
            // Recursively attempt another ViewGroup.
            setAppFont((ViewGroup) mChild, mFont);
        }
        else if (reflect)
        {
            try {
                Method mSetTypeface = mChild.getClass().getMethod("setTypeface", Typeface.class);
                mSetTypeface.invoke(mChild, mFont); 
            } catch (Exception e) { /* Do something... */ }
        }
    }
}

然后要使用它,你会做这样的事情:

final Typeface mFont = Typeface.createFromAsset(getAssets(),
"fonts/MyFont.ttf"); 
final ViewGroup mContainer = (ViewGroup) findViewById(
android.R.id.content).getRootView();
HomeActivity.setAppFont(mContainer, mFont);

希望有帮助。

While this would not work for an entire application, it would work for an Activity and could be re-used for any other Activity. I've updated my code thanks to @FR073N to support other Views. I'm not sure about issues with Buttons, RadioGroups, etc. because those classes all extend TextView so they should work just fine. I added a boolean conditional for using reflection because it seems very hackish and might notably compromise performance.

Note: as pointed out, this will not work for dynamic content! For that, it's possible to call this method with say an onCreateView or getView method, but requires additional effort.

/**
 * Recursively sets a {@link Typeface} to all
 * {@link TextView}s in a {@link ViewGroup}.
 */
public static final void setAppFont(ViewGroup mContainer, Typeface mFont, boolean reflect)
{
    if (mContainer == null || mFont == null) return;

    final int mCount = mContainer.getChildCount();

    // Loop through all of the children.
    for (int i = 0; i < mCount; ++i)
    {
        final View mChild = mContainer.getChildAt(i);
        if (mChild instanceof TextView)
        {
            // Set the font if it is a TextView.
            ((TextView) mChild).setTypeface(mFont);
        }
        else if (mChild instanceof ViewGroup)
        {
            // Recursively attempt another ViewGroup.
            setAppFont((ViewGroup) mChild, mFont);
        }
        else if (reflect)
        {
            try {
                Method mSetTypeface = mChild.getClass().getMethod("setTypeface", Typeface.class);
                mSetTypeface.invoke(mChild, mFont); 
            } catch (Exception e) { /* Do something... */ }
        }
    }
}

Then to use it you would do something like this:

final Typeface mFont = Typeface.createFromAsset(getAssets(),
"fonts/MyFont.ttf"); 
final ViewGroup mContainer = (ViewGroup) findViewById(
android.R.id.content).getRootView();
HomeActivity.setAppFont(mContainer, mFont);

Hope that helps.

愿与i 2024-09-06 14:54:49

总之:

选项#1:使用反射来应用字体(结合 westonRoger Huang 的答案):

import java.lang.reflect.Field;
import android.content.Context;
import android.graphics.Typeface;

public final class FontsOverride { 

    public static void setDefaultFont(Context context,
            String staticTypefaceFieldName, String fontAssetName) {
        final Typeface regular = Typeface.createFromAsset(context.getAssets(),
                fontAssetName);
        replaceFont(staticTypefaceFieldName, regular);
    } 

    protected static void replaceFont(String staticTypefaceFieldName,final Typeface newTypeface) {
        if (isVersionGreaterOrEqualToLollipop()) {
            Map<String, Typeface> newMap = new HashMap<String, Typeface>();
            newMap.put("sans-serif", newTypeface);
            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 staticField = Typeface.class.getDeclaredField(staticTypefaceFieldName);
                staticField.setAccessible(true);
                staticField.set(null, newTypeface);
            } catch (NoSuchFieldException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } 
        }
    }

} 

Application 类中的用法:

public final class Application extends android.app.Application {
    @Override 
    public void onCreate() { 
        super.onCreate(); 
        FontsOverride.setDefaultFont(this, "DEFAULT", "MyFontAsset.ttf");
        FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf");
        FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf");
        FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf");
    } 
} 

设置一种样式以强制该字体应用于整个应用程序(基于 lovefish):

Pre-Lollipop:

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

Lollipop (API 21):

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:textAppearance">@style/CustomTextAppearance</item>
   </style>

   <style name="CustomTextAppearance">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

Option2: 子类化每个视图,其中您需要自定义字体,即。 ListView、EditTextView、Button 等(Palani 的回答):

public class CustomFontView extends TextView {

public CustomFontView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(); 
} 

public CustomFontView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(); 
} 

public CustomFontView(Context context) {
    super(context);
    init(); 
} 

private void init() { 
    if (!isInEditMode()) {
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(), "Futura.ttf");
        setTypeface(tf);
    } 
} 

选项 3: 实施遍历当前屏幕的视图层次结构的视图爬行程序:

Variation#1(Tom 的回答):

public static final void setAppFont(ViewGroup mContainer, Typeface mFont, boolean reflect)
{ 
    if (mContainer == null || mFont == null) return;

    final int mCount = mContainer.getChildCount();

    // Loop through all of the children. 
    for (int i = 0; i < mCount; ++i)
    { 
        final View mChild = mContainer.getChildAt(i);
        if (mChild instanceof TextView)
        { 
            // Set the font if it is a TextView. 
            ((TextView) mChild).setTypeface(mFont);
        } 
        else if (mChild instanceof ViewGroup)
        { 
            // Recursively attempt another ViewGroup. 
            setAppFont((ViewGroup) mChild, mFont);
        } 
        else if (reflect)
        { 
            try { 
                Method mSetTypeface = mChild.getClass().getMethod("setTypeface", Typeface.class);
                mSetTypeface.invoke(mChild, mFont); 
            } catch (Exception e) { /* Do something... */ }
        } 
    } 
} 

用法:

final ViewGroup mContainer = (ViewGroup) findViewById(
android.R.id.content).getRootView();
HomeActivity.setAppFont(mContainer, Typeface.createFromAsset(getAssets(),
"fonts/MyFont.ttf"));

变体#2: https://coderwall.com/p/qxxmaa /android-use-a-custom-font-everywhere

选项 #4: 使用名为 Calligraphy 的 3rd 方库。

就我个人而言,我会推荐选项#4,因为它可以省去很多麻烦。

In summary:

Option#1: Use reflection to apply font (combining weston & Roger Huang's answer):

import java.lang.reflect.Field;
import android.content.Context;
import android.graphics.Typeface;

public final class FontsOverride { 

    public static void setDefaultFont(Context context,
            String staticTypefaceFieldName, String fontAssetName) {
        final Typeface regular = Typeface.createFromAsset(context.getAssets(),
                fontAssetName);
        replaceFont(staticTypefaceFieldName, regular);
    } 

    protected static void replaceFont(String staticTypefaceFieldName,final Typeface newTypeface) {
        if (isVersionGreaterOrEqualToLollipop()) {
            Map<String, Typeface> newMap = new HashMap<String, Typeface>();
            newMap.put("sans-serif", newTypeface);
            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 staticField = Typeface.class.getDeclaredField(staticTypefaceFieldName);
                staticField.setAccessible(true);
                staticField.set(null, newTypeface);
            } catch (NoSuchFieldException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } 
        }
    }

} 

Usage in Application class:

public final class Application extends android.app.Application {
    @Override 
    public void onCreate() { 
        super.onCreate(); 
        FontsOverride.setDefaultFont(this, "DEFAULT", "MyFontAsset.ttf");
        FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf");
        FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf");
        FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf");
    } 
} 

set up a style to force that font typeface application wide (based on lovefish):

Pre-Lollipop:

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

Lollipop (API 21):

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:textAppearance">@style/CustomTextAppearance</item>
   </style>

   <style name="CustomTextAppearance">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

Option2: Subclass each and every View where you need to customize font, ie. ListView, EditTextView, Button, etc. (Palani's answer):

public class CustomFontView extends TextView {

public CustomFontView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(); 
} 

public CustomFontView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(); 
} 

public CustomFontView(Context context) {
    super(context);
    init(); 
} 

private void init() { 
    if (!isInEditMode()) {
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(), "Futura.ttf");
        setTypeface(tf);
    } 
} 

Option 3: Implement a View Crawler that traverses through the view hierarchy of your current screen:

Variation#1 (Tom's answer):

public static final void setAppFont(ViewGroup mContainer, Typeface mFont, boolean reflect)
{ 
    if (mContainer == null || mFont == null) return;

    final int mCount = mContainer.getChildCount();

    // Loop through all of the children. 
    for (int i = 0; i < mCount; ++i)
    { 
        final View mChild = mContainer.getChildAt(i);
        if (mChild instanceof TextView)
        { 
            // Set the font if it is a TextView. 
            ((TextView) mChild).setTypeface(mFont);
        } 
        else if (mChild instanceof ViewGroup)
        { 
            // Recursively attempt another ViewGroup. 
            setAppFont((ViewGroup) mChild, mFont);
        } 
        else if (reflect)
        { 
            try { 
                Method mSetTypeface = mChild.getClass().getMethod("setTypeface", Typeface.class);
                mSetTypeface.invoke(mChild, mFont); 
            } catch (Exception e) { /* Do something... */ }
        } 
    } 
} 

Usage :

final ViewGroup mContainer = (ViewGroup) findViewById(
android.R.id.content).getRootView();
HomeActivity.setAppFont(mContainer, Typeface.createFromAsset(getAssets(),
"fonts/MyFont.ttf"));

Variation#2: https://coderwall.com/p/qxxmaa/android-use-a-custom-font-everywhere.

Option #4: Use 3rd Party Lib called Calligraphy.

Personally, I would recommend Option#4, as it saves a lot of headaches.

萌酱 2024-09-06 14:54:49

我想改进 weston 对 API 21 Android 5.0 的回答。

原因

在 API 21 下,大多数文本样式都包含 fontFamily 设置,例如:

<style name="TextAppearance.Material">
     <item name="fontFamily">@string/font_family_body_1_material</item>
</style>

应用默认的 Roboto Regular 字体:

<string name="font_family_body_1_material">sans-serif</string>

原始答案无法应用等宽字体,因为 android:fontFamily 比 android:typeface 属性具有更高的优先级(参考)。
使用 Theme.Holo.* 是一个有效的解决方法,因为里面没有 android:fontFamily 设置。

解决方案

自 Android 5.0 将系统字体放入静态变量 Typeface.sSystemFontMap (参考),我们可以使用使用相同的反射技术来替换它:

protected static void replaceFont(String staticTypefaceFieldName,
        final Typeface newTypeface) {
    if (isVersionGreaterOrEqualToLollipop()) {
        Map<String, Typeface> newMap = new HashMap<String, Typeface>();
        newMap.put("sans-serif", newTypeface);
        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 staticField = Typeface.class
                    .getDeclaredField(staticTypefaceFieldName);
            staticField.setAccessible(true);
            staticField.set(null, newTypeface);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

I would like to improve weston's answer for API 21 Android 5.0.

Cause

Under API 21, most of the text styles include fontFamily setting, like:

<style name="TextAppearance.Material">
     <item name="fontFamily">@string/font_family_body_1_material</item>
</style>

Which applys the default Roboto Regular font:

<string name="font_family_body_1_material">sans-serif</string>

The original answer fails to apply monospace font, because android:fontFamily has greater priority to android:typeface attribute (reference).
Using Theme.Holo.* is a valid workaround, because there is no android:fontFamily settings inside.

Solution

Since Android 5.0 put system typeface in static variable Typeface.sSystemFontMap (reference), we can use the same reflection technique to replace it:

protected static void replaceFont(String staticTypefaceFieldName,
        final Typeface newTypeface) {
    if (isVersionGreaterOrEqualToLollipop()) {
        Map<String, Typeface> newMap = new HashMap<String, Typeface>();
        newMap.put("sans-serif", newTypeface);
        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 staticField = Typeface.class
                    .getDeclaredField(staticTypefaceFieldName);
            staticField.setAccessible(true);
            staticField.set(null, newTypeface);
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}
三人与歌 2024-09-06 14:54:49

它非常简单...
1.下载自定义字体并将其放入资产中。然后为文本视图编写一个单独的类,如下所示:这里我使用了futura字体

public class CusFntTextView extends TextView {

public CusFntTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}

public CusFntTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public CusFntTextView(Context context) {
    super(context);
    init();
}

private void init() {
    if (!isInEditMode()) {
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(), "Futura.ttf");
        setTypeface(tf);
    }
}

}

并在xml中执行以下操作:

 <com.packagename.CusFntTextView
        android:id="@+id/tvtitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"         
        android:text="Hi Android"           
        android:textAppearance="?android:attr/textAppearanceLarge"
      />

its very simple...
1.Download and put ur custom font in assets..then write one separate class for text view as follows: here i used futura font

public class CusFntTextView extends TextView {

public CusFntTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}

public CusFntTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public CusFntTextView(Context context) {
    super(context);
    init();
}

private void init() {
    if (!isInEditMode()) {
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(), "Futura.ttf");
        setTypeface(tf);
    }
}

}

and do the following in xml :

 <com.packagename.CusFntTextView
        android:id="@+id/tvtitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"         
        android:text="Hi Android"           
        android:textAppearance="?android:attr/textAppearanceLarge"
      />
飞烟轻若梦 2024-09-06 14:54:49

我还建议扩展 TextView 和其他控件,但我最好考虑在构造中设置字体。

public FontTextView(Context context) {
    super(context);
    init();
}

public FontTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public FontTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}

protected void init() {
    setTypeface(Typeface.createFromAsset(getContext().getAssets(), AppConst.FONT));
}

I would also suggest extending TextView and other controls, but it would be better I consider to set up font in constructs.

public FontTextView(Context context) {
    super(context);
    init();
}

public FontTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public FontTextView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init();
}

protected void init() {
    setTypeface(Typeface.createFromAsset(getContext().getAssets(), AppConst.FONT));
}
浅笑轻吟梦一曲 2024-09-06 14:54:49

可以在这里找到一个出色的解决方案:https://coderwall。 com/p/qxxmaa/android-use-a-custom-font-everywhere

只需从 BaseActivity 扩展活动并编写这些方法即可。此外,您应该更好地缓存字体,如下所述:https://stackoverflow.com/a/16902532/2914140


经过一番研究,我编写了适用于 Samsung Galaxy Tab A (Android 5.0) 的代码。使用了 weston 和 Roger Huang 的代码以及 https://stackoverflow.com/a/33236102/2914140。还在 Lenovo TAB 2 A10-70L 上进行了测试,但无法正常工作。
我在这里插入了“Comic Sans”字体以查看差异。

import android.content.Context;
import android.graphics.Typeface;
import android.os.Build;
import android.util.Log;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

public class FontsOverride {
    private static final int BOLD = 1;
    private static final int BOLD_ITALIC = 2;
    private static final int ITALIC = 3;
    private static final int LIGHT = 4;
    private static final int CONDENSED = 5;
    private static final int THIN = 6;
    private static final int MEDIUM = 7;
    private static final int REGULAR = 8;

    private Context context;

    public FontsOverride(Context context) {
        this.context = context;
    }

    public void loadFonts() {
        Map<String, Typeface> fontsMap = new HashMap<>();
        fontsMap.put("sans-serif", getTypeface("comic.ttf", REGULAR));
        fontsMap.put("sans-serif-bold", getTypeface("comic.ttf", BOLD));
        fontsMap.put("sans-serif-italic", getTypeface("comic.ttf", ITALIC));
        fontsMap.put("sans-serif-light", getTypeface("comic.ttf", LIGHT));
        fontsMap.put("sans-serif-condensed", getTypeface("comic.ttf", CONDENSED));
        fontsMap.put("sans-serif-thin", getTypeface("comic.ttf", THIN));
        fontsMap.put("sans-serif-medium", getTypeface("comic.ttf", MEDIUM));
        overrideFonts(fontsMap);
    }

    private void overrideFonts(Map<String, Typeface> typefaces) {
        if (Build.VERSION.SDK_INT == 21) {
            try {
                final Field field = Typeface.class.getDeclaredField("sSystemFontMap");
                field.setAccessible(true);
                Map<String, Typeface> oldFonts = (Map<String, Typeface>) field.get(null);
                if (oldFonts != null) {
                    oldFonts.putAll(typefaces);
                } else {
                    oldFonts = typefaces;
                }
                field.set(null, oldFonts);
                field.setAccessible(false);
            } catch (Exception e) {
                Log.e("TypefaceUtil", "Cannot set custom fonts");
            }
        } else {
            try {
                for (Map.Entry<String, Typeface> entry : typefaces.entrySet()) {
                    final Field staticField = Typeface.class.getDeclaredField(entry.getKey());
                    staticField.setAccessible(true);
                    staticField.set(null, entry.getValue());
                }
            } catch (NoSuchFieldException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }

    private Typeface getTypeface(String fontFileName, int fontType) {
        final Typeface tf = Typeface.createFromAsset(context.getAssets(), "fonts/" + fontFileName);
        return Typeface.create(tf, fontType);
    }
}

要在整个应用程序中运行代码,您应该在诸如应用程序之类的类中编写以下内容:

    new FontsOverride(this).loadFonts();

在“资产”内创建一个文件夹“字体”,并将所需的字体放在那里。可以在这里找到简单的说明:https://stackoverflow.com/a/31697103/2914140

Lenovo 设备还会错误地获取字体值。大多数时候它返回 Typeface.NORMAL,有时返回 null。即使 TextView 是粗体的(在 xml 文件布局中)。请参阅此处:TextView isBold 始终返回 NORMAL。这样,屏幕上的文本始终采用常规字体,而不是粗体或斜体。所以我认为这是制作人的错误。

A brilliant solution can be found here: https://coderwall.com/p/qxxmaa/android-use-a-custom-font-everywhere.

Simply extend activities from BaseActivity and write those methods. Also you should better cache fonts as described here: https://stackoverflow.com/a/16902532/2914140.


After some research I wrote code that works at Samsung Galaxy Tab A (Android 5.0). Used code of weston and Roger Huang as well as https://stackoverflow.com/a/33236102/2914140. Also tested on Lenovo TAB 2 A10-70L, where it doesn't work.
I inserted a font 'Comic Sans' here in order to see a difference.

import android.content.Context;
import android.graphics.Typeface;
import android.os.Build;
import android.util.Log;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

public class FontsOverride {
    private static final int BOLD = 1;
    private static final int BOLD_ITALIC = 2;
    private static final int ITALIC = 3;
    private static final int LIGHT = 4;
    private static final int CONDENSED = 5;
    private static final int THIN = 6;
    private static final int MEDIUM = 7;
    private static final int REGULAR = 8;

    private Context context;

    public FontsOverride(Context context) {
        this.context = context;
    }

    public void loadFonts() {
        Map<String, Typeface> fontsMap = new HashMap<>();
        fontsMap.put("sans-serif", getTypeface("comic.ttf", REGULAR));
        fontsMap.put("sans-serif-bold", getTypeface("comic.ttf", BOLD));
        fontsMap.put("sans-serif-italic", getTypeface("comic.ttf", ITALIC));
        fontsMap.put("sans-serif-light", getTypeface("comic.ttf", LIGHT));
        fontsMap.put("sans-serif-condensed", getTypeface("comic.ttf", CONDENSED));
        fontsMap.put("sans-serif-thin", getTypeface("comic.ttf", THIN));
        fontsMap.put("sans-serif-medium", getTypeface("comic.ttf", MEDIUM));
        overrideFonts(fontsMap);
    }

    private void overrideFonts(Map<String, Typeface> typefaces) {
        if (Build.VERSION.SDK_INT == 21) {
            try {
                final Field field = Typeface.class.getDeclaredField("sSystemFontMap");
                field.setAccessible(true);
                Map<String, Typeface> oldFonts = (Map<String, Typeface>) field.get(null);
                if (oldFonts != null) {
                    oldFonts.putAll(typefaces);
                } else {
                    oldFonts = typefaces;
                }
                field.set(null, oldFonts);
                field.setAccessible(false);
            } catch (Exception e) {
                Log.e("TypefaceUtil", "Cannot set custom fonts");
            }
        } else {
            try {
                for (Map.Entry<String, Typeface> entry : typefaces.entrySet()) {
                    final Field staticField = Typeface.class.getDeclaredField(entry.getKey());
                    staticField.setAccessible(true);
                    staticField.set(null, entry.getValue());
                }
            } catch (NoSuchFieldException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }

    private Typeface getTypeface(String fontFileName, int fontType) {
        final Typeface tf = Typeface.createFromAsset(context.getAssets(), "fonts/" + fontFileName);
        return Typeface.create(tf, fontType);
    }
}

To run the code in entire application you should write in some class like Application the following:

    new FontsOverride(this).loadFonts();

Create a folder 'fonts' inside 'assets' and put needed fonts there. A simple instruction may be found here: https://stackoverflow.com/a/31697103/2914140.

The Lenovo device also incorrectly gets a value of a typeface. In most times it returns Typeface.NORMAL, sometimes null. Even if a TextView is bold (in xml-file layout). See here: TextView isBold always returns NORMAL. This way a text on a screen is always in a regural font, not bold or italic. So I think it's a bug of a producer.

花桑 2024-09-06 14:54:49

我想改进 westonRoger Huang 针对主题为“Theme.AppCompat”的 API 21 Android 棒棒糖的回答。

Android 4.4

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

以上(等于)API 5.0

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:textAppearance">@style/CustomTextAppearance</item>
   </style>

   <style name="CustomTextAppearance">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

以下,FontsOverride util文件与weston 的回答。
我在这些手机中进行了测试:

Nexus 5(android 5.1 Primary Android System)

ZTE V5(android 5.1 CM12.1)

XIAOMI note(android 4.4 MIUI6)

HUAWEI C8850(android 2.3.5 UNKNOWN)

I would like to improve weston's and Roger Huang's answers for over API 21 Android lollipop with theme "Theme.AppCompat".

Below Android 4.4

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

Over(equal) API 5.0

<resources>
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
    </style>

   <!-- Application theme. -->
   <style name="AppTheme" parent="AppBaseTheme">
       <item name="android:textAppearance">@style/CustomTextAppearance</item>
   </style>

   <style name="CustomTextAppearance">
       <item name="android:typeface">monospace</item>
   </style>
</resources>

And the FontsOverride util file is same as what in weston's answer.
I have tested in these phones:

Nexus 5(android 5.1 Primary Android System)

ZTE V5(android 5.1 CM12.1)

XIAOMI note(android 4.4 MIUI6)

HUAWEI C8850(android 2.3.5 UNKNOWN)

望喜 2024-09-06 14:54:49

适用于 Xamarin.Android:

类:

public class FontsOverride
{
    public static void SetDefaultFont(Context context, string staticTypefaceFieldName, string fontAssetName)
    {
        Typeface regular = Typeface.CreateFromAsset(context.Assets, fontAssetName);
        ReplaceFont(staticTypefaceFieldName, regular);
    }

    protected static void ReplaceFont(string staticTypefaceFieldName, Typeface newTypeface)
    {
        try
        {
            Field staticField = ((Java.Lang.Object)(newTypeface)).Class.GetDeclaredField(staticTypefaceFieldName);
            staticField.Accessible = true;
            staticField.Set(null, newTypeface);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
}

应用程序实现:

namespace SomeAndroidApplication
{
    [Application]
    public class App : Application
    {
        public App()
        {

        }

        public App(IntPtr handle, JniHandleOwnership transfer)
            : base(handle, transfer)
        {

        }

        public override void OnCreate()
        {
            base.OnCreate();

            FontsOverride.SetDefaultFont(this, "MONOSPACE", "fonts/Roboto-Light.ttf");
        }
    }
}

样式:

<style name="Theme.Storehouse" parent="Theme.Sherlock">
    <item name="android:typeface">monospace</item>
</style>

Working for Xamarin.Android:

Class:

public class FontsOverride
{
    public static void SetDefaultFont(Context context, string staticTypefaceFieldName, string fontAssetName)
    {
        Typeface regular = Typeface.CreateFromAsset(context.Assets, fontAssetName);
        ReplaceFont(staticTypefaceFieldName, regular);
    }

    protected static void ReplaceFont(string staticTypefaceFieldName, Typeface newTypeface)
    {
        try
        {
            Field staticField = ((Java.Lang.Object)(newTypeface)).Class.GetDeclaredField(staticTypefaceFieldName);
            staticField.Accessible = true;
            staticField.Set(null, newTypeface);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
}

Application Implementation:

namespace SomeAndroidApplication
{
    [Application]
    public class App : Application
    {
        public App()
        {

        }

        public App(IntPtr handle, JniHandleOwnership transfer)
            : base(handle, transfer)
        {

        }

        public override void OnCreate()
        {
            base.OnCreate();

            FontsOverride.SetDefaultFont(this, "MONOSPACE", "fonts/Roboto-Light.ttf");
        }
    }
}

Style:

<style name="Theme.Storehouse" parent="Theme.Sherlock">
    <item name="android:typeface">monospace</item>
</style>
一个人的夜不怕黑 2024-09-06 14:54:49

从 Android O 开始,现在可以直接从 XML 定义,我的错误现已关闭!

请参阅此处了解详细信息

TL ;DR:

首先,您必须将字体添加到项目中

,然后添加字体系列,如下所示:

<?xml version="1.0" encoding="utf-8"?>
<font-family xmlns:android="http://schemas.android.com/apk/res/android">
    <font
        android:fontStyle="normal"
        android:fontWeight="400"
        android:font="@font/lobster_regular" />
    <font
        android:fontStyle="italic"
        android:fontWeight="400"
        android:font="@font/lobster_italic" />
</font-family>

最后,您可以在布局或样式中使用该字体:

<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/lobster"/>

<style name="customfontstyle" parent="@android:style/TextAppearance.Small">
    <item name="android:fontFamily">@font/lobster</item>
</style>

享受吧!

As of Android O this is now possible to define directly from the XML and my bug is now closed!

See here for details

TL;DR:

First you must add your fonts to the project

Second you add a font family, like so:

<?xml version="1.0" encoding="utf-8"?>
<font-family xmlns:android="http://schemas.android.com/apk/res/android">
    <font
        android:fontStyle="normal"
        android:fontWeight="400"
        android:font="@font/lobster_regular" />
    <font
        android:fontStyle="italic"
        android:fontWeight="400"
        android:font="@font/lobster_italic" />
</font-family>

Finally, you can use the font in a layout or style:

<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/lobster"/>

<style name="customfontstyle" parent="@android:style/TextAppearance.Small">
    <item name="android:fontFamily">@font/lobster</item>
</style>

Enjoy!

缘字诀 2024-09-06 14:54:49

您可以为每个布局一一设置自定义字体,只需通过传递其根视图从每个布局调用一个函数。首先,创建一个单独的方法来访问像这样的字体对象

 public class Font {
    private static Font font;
    public Typeface ROBO_LIGHT;

    private Font() {

    }

    public static Font getInstance(Context context) {
        if (font == null) {
            font = new Font();
            font.init(context);
        }
        return font;

    }

    public void init(Context context) {

        ROBO_LIGHT = Typeface.createFromAsset(context.getAssets(),
                "Roboto-Light.ttf");
    }

}

您可以在上面的类中定义不同的字体,现在定义一个将应用字体的 font Helper 类:

   public class FontHelper {

    private static Font font;

    public static void applyFont(View parentView, Context context) {

        font = Font.getInstance(context);

        apply((ViewGroup)parentView);

    }

    private static void apply(ViewGroup parentView) {
        for (int i = 0; i < parentView.getChildCount(); i++) {

            View view = parentView.getChildAt(i);

//You can add any view element here on which you want to apply font 

            if (view instanceof EditText) {

                ((EditText) view).setTypeface(font.ROBO_LIGHT);

            }
            if (view instanceof TextView) {

                ((TextView) view).setTypeface(font.ROBO_LIGHT);

            }

            else if (view instanceof ViewGroup
                    && ((ViewGroup) view).getChildCount() > 0) {
                apply((ViewGroup) view);
            }

        }

    }

}

在上面的代码中,我仅在 textView 和 EditText 上应用字体,您也可以类似地在其他视图元素上应用字体。您只需将根视图组的 id 传递给上面的应用字体方法。例如,您的布局是:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/mainParent"
    tools:context="${relativePackage}.${activityClass}" >

    <RelativeLayout
        android:id="@+id/mainContainer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/homeFooter"
        android:layout_below="@+id/edit" >

        <ImageView
            android:id="@+id/PreviewImg"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/abc_list_longpressed_holo"
            android:visibility="gone" />

        <RelativeLayout
            android:id="@+id/visibilityLayer"
            android:layout_width="match_parent"
            android:layout_height="fill_parent" >

            <ImageView
                android:id="@+id/UseCamera"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentTop="true"
                android:layout_centerHorizontal="true"
                android:src="@drawable/camera" />

            <TextView
                android:id="@+id/tvOR"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/UseCamera"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="20dp"
                android:text="OR"
                android:textSize="30dp" />

            <TextView
                android:id="@+id/tvAND"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="20dp"
                android:text="OR"
                android:textSize="30dp" />

</RelativeLayout>

在上面的布局中,根父 ID 是“Main Parent”,现在让我们应用字体

public class MainActivity extends BaseFragmentActivity {

    private EditText etName;
    private EditText etPassword;
    private TextView tvTitle;
    public static boolean isHome = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       Font font=Font.getInstance(getApplicationContext());
        FontHelper.applyFont(findViewById(R.id.mainParent),          getApplicationContext());
   }    
}

Cheers :)

You can set custom fonts for every layout one by one ,with just one function call from every layout by passing its root View.First ,create a singelton approach for accessing font object like this

 public class Font {
    private static Font font;
    public Typeface ROBO_LIGHT;

    private Font() {

    }

    public static Font getInstance(Context context) {
        if (font == null) {
            font = new Font();
            font.init(context);
        }
        return font;

    }

    public void init(Context context) {

        ROBO_LIGHT = Typeface.createFromAsset(context.getAssets(),
                "Roboto-Light.ttf");
    }

}

You can define different fonts in above class, Now Define a font Helper class that will apply fonts :

   public class FontHelper {

    private static Font font;

    public static void applyFont(View parentView, Context context) {

        font = Font.getInstance(context);

        apply((ViewGroup)parentView);

    }

    private static void apply(ViewGroup parentView) {
        for (int i = 0; i < parentView.getChildCount(); i++) {

            View view = parentView.getChildAt(i);

//You can add any view element here on which you want to apply font 

            if (view instanceof EditText) {

                ((EditText) view).setTypeface(font.ROBO_LIGHT);

            }
            if (view instanceof TextView) {

                ((TextView) view).setTypeface(font.ROBO_LIGHT);

            }

            else if (view instanceof ViewGroup
                    && ((ViewGroup) view).getChildCount() > 0) {
                apply((ViewGroup) view);
            }

        }

    }

}

In the above code, I am applying fonts on textView and EditText only , you can apply fonts on other view elements as well similarly.You just need to pass the id of your root View group to the above apply font method. for example your layout is :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/mainParent"
    tools:context="${relativePackage}.${activityClass}" >

    <RelativeLayout
        android:id="@+id/mainContainer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/homeFooter"
        android:layout_below="@+id/edit" >

        <ImageView
            android:id="@+id/PreviewImg"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/abc_list_longpressed_holo"
            android:visibility="gone" />

        <RelativeLayout
            android:id="@+id/visibilityLayer"
            android:layout_width="match_parent"
            android:layout_height="fill_parent" >

            <ImageView
                android:id="@+id/UseCamera"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentTop="true"
                android:layout_centerHorizontal="true"
                android:src="@drawable/camera" />

            <TextView
                android:id="@+id/tvOR"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/UseCamera"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="20dp"
                android:text="OR"
                android:textSize="30dp" />

            <TextView
                android:id="@+id/tvAND"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_marginTop="20dp"
                android:text="OR"
                android:textSize="30dp" />

</RelativeLayout>

In the Above Layout the root parent id is "Main Parent " now lets apply font

public class MainActivity extends BaseFragmentActivity {

    private EditText etName;
    private EditText etPassword;
    private TextView tvTitle;
    public static boolean isHome = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       Font font=Font.getInstance(getApplicationContext());
        FontHelper.applyFont(findViewById(R.id.mainParent),          getApplicationContext());
   }    
}

Cheers :)

不必了 2024-09-06 14:54:49

我建议扩展 TextView,并始终在 XML 布局中或任何需要 TextView 的地方使用自定义 TextView。在您的自定义 TextView 中,覆盖 setTypeface

@Override
public void setTypeface(Typeface tf, int style) {
    //to handle bold, you could also handle italic or other styles here as well
    if (style == 1){
        tf = Typeface.createFromAsset(getContext().getApplicationContext().getAssets(), "MuseoSans700.otf");
    }else{
        tf = Typeface.createFromAsset(getContext().getApplicationContext().getAssets(), "MuseoSans500.otf");
    }
    super.setTypeface(tf, 0);
}

I would suggest extending TextView, and always using your custom TextView within your XML layouts or wherever you need a TextView. In your custom TextView, override setTypeface

@Override
public void setTypeface(Typeface tf, int style) {
    //to handle bold, you could also handle italic or other styles here as well
    if (style == 1){
        tf = Typeface.createFromAsset(getContext().getApplicationContext().getAssets(), "MuseoSans700.otf");
    }else{
        tf = Typeface.createFromAsset(getContext().getApplicationContext().getAssets(), "MuseoSans500.otf");
    }
    super.setTypeface(tf, 0);
}
何以畏孤独 2024-09-06 14:54:49

Tom 的解决方案效果很好,但仅适用于 TextView 和 EditText。

如果您想覆盖大多数视图(RadioGroup、TextView、Checkbox...),我创建了一个方法来执行此操作:

protected void changeChildrenFont(ViewGroup v, Typeface font){
    for(int i = 0; i < v.getChildCount(); i++){

        // For the ViewGroup, we'll have to use recursivity
        if(v.getChildAt(i) instanceof ViewGroup){
            changeChildrenFont((ViewGroup) v.getChildAt(i), font);
        }
        else{
            try {
                Object[] nullArgs = null;
                //Test wether setTypeface and getTypeface methods exists
                Method methodTypeFace = v.getChildAt(i).getClass().getMethod("setTypeface", new Class[] {Typeface.class, Integer.TYPE});
                //With getTypefaca we'll get back the style (Bold, Italic...) set in XML
                Method methodGetTypeFace = v.getChildAt(i).getClass().getMethod("getTypeface", new Class[] {});
                Typeface typeFace = ((Typeface)methodGetTypeFace.invoke(v.getChildAt(i), nullArgs));
                //Invoke the method and apply the new font with the defined style to the view if the method exists (textview,...)
                methodTypeFace.invoke(v.getChildAt(i), new Object[] {font, typeFace == null ? 0 : typeFace.getStyle()});
            }
            //Will catch the view with no such methods (listview...)
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

此方法将返回 XML 中设置的视图样式(粗体、斜体...)并应用如果它们存在的话。

对于 ListView,我总是创建一个适配器,并在 getView 中设置字体。

Tom's solution works great, but only works with TextView and EditText.

If you want to cover most of the views (RadioGroup, TextView, Checkbox...), I created a method doing that :

protected void changeChildrenFont(ViewGroup v, Typeface font){
    for(int i = 0; i < v.getChildCount(); i++){

        // For the ViewGroup, we'll have to use recursivity
        if(v.getChildAt(i) instanceof ViewGroup){
            changeChildrenFont((ViewGroup) v.getChildAt(i), font);
        }
        else{
            try {
                Object[] nullArgs = null;
                //Test wether setTypeface and getTypeface methods exists
                Method methodTypeFace = v.getChildAt(i).getClass().getMethod("setTypeface", new Class[] {Typeface.class, Integer.TYPE});
                //With getTypefaca we'll get back the style (Bold, Italic...) set in XML
                Method methodGetTypeFace = v.getChildAt(i).getClass().getMethod("getTypeface", new Class[] {});
                Typeface typeFace = ((Typeface)methodGetTypeFace.invoke(v.getChildAt(i), nullArgs));
                //Invoke the method and apply the new font with the defined style to the view if the method exists (textview,...)
                methodTypeFace.invoke(v.getChildAt(i), new Object[] {font, typeFace == null ? 0 : typeFace.getStyle()});
            }
            //Will catch the view with no such methods (listview...)
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

This method will get back the style of the view set in XML (bold, italic...) and apply them if they exists.

For the ListView, I always create an adapter, and I set the font inside getView.

饮湿 2024-09-06 14:54:49

我编写了一个类,将字体分配给当前视图层次结构中的视图,并基于操作系统当前的字体属性(粗体、正常,如果需要,您可以添加其他样式):

public final class TypefaceAssigner {

public final Typeface DEFAULT;
public final Typeface DEFAULT_BOLD;

@Inject
public TypefaceAssigner(AssetManager assetManager) {
    DEFAULT = Typeface.createFromAsset(assetManager, "TradeGothicLTCom.ttf");
    DEFAULT_BOLD = Typeface.createFromAsset(assetManager, "TradeGothicLTCom-Bd2.ttf");
}

public void assignTypeface(View v) {
    if (v instanceof ViewGroup) {
        for (int i = 0; i < ((ViewGroup) v).getChildCount(); i++) {
            View view = ((ViewGroup) v).getChildAt(i);
            if (view instanceof ViewGroup) {
                setTypeface(view);
            } else {
                setTypeface(view);
            }
        }
    } else {
        setTypeface(v);
    }
}

private void setTypeface(View view) {
    if (view instanceof TextView) {
        TextView textView = (TextView) view;
        Typeface typeface = textView.getTypeface();
        if (typeface != null && typeface.isBold()) {
            textView.setTypeface(DEFAULT_BOLD);
        } else {
            textView.setTypeface(DEFAULT);
        }
    }
}
}

现在在 onViewCreated 或 onCreateView 中的所有片段中,在 onCreate 中的所有活动中并且在 getView 或 newView 中的所有视图适配器中只需调用:

typefaceAssigner.assignTypeface(view);

I wrote a class assigning typeface to the views in the current view hierarchy and based os the current typeface properties (bold, normal, you can add other styles if you want):

public final class TypefaceAssigner {

public final Typeface DEFAULT;
public final Typeface DEFAULT_BOLD;

@Inject
public TypefaceAssigner(AssetManager assetManager) {
    DEFAULT = Typeface.createFromAsset(assetManager, "TradeGothicLTCom.ttf");
    DEFAULT_BOLD = Typeface.createFromAsset(assetManager, "TradeGothicLTCom-Bd2.ttf");
}

public void assignTypeface(View v) {
    if (v instanceof ViewGroup) {
        for (int i = 0; i < ((ViewGroup) v).getChildCount(); i++) {
            View view = ((ViewGroup) v).getChildAt(i);
            if (view instanceof ViewGroup) {
                setTypeface(view);
            } else {
                setTypeface(view);
            }
        }
    } else {
        setTypeface(v);
    }
}

private void setTypeface(View view) {
    if (view instanceof TextView) {
        TextView textView = (TextView) view;
        Typeface typeface = textView.getTypeface();
        if (typeface != null && typeface.isBold()) {
            textView.setTypeface(DEFAULT_BOLD);
        } else {
            textView.setTypeface(DEFAULT);
        }
    }
}
}

Now in all fragments in onViewCreated or onCreateView, in all activities in onCreate and in all view adapters in getView or newView just invoke:

typefaceAssigner.assignTypeface(view);
热情消退 2024-09-06 14:54:49

在 api 26 中,使用 build.gradle 3.0.0 及更高版本,您可以在 res 中创建一个字体目录
并在您的样式中使用此行

<item name="android:fontFamily">@font/your_font</item>

进行更改 build.gradle 在您的 build.gradle 依赖项中使用此行

classpath 'com.android.tools.build:gradle:3.0.0'

in api 26 with build.gradle 3.0.0 and higher you can create a font directory in res
and use this line in your style

<item name="android:fontFamily">@font/your_font</item>

for change build.gradle use this in your build.gradle dependecies

classpath 'com.android.tools.build:gradle:3.0.0'
看轻我的陪伴 2024-09-06 14:54:49

最后,Google 意识到这个问题的严重性(将自定义字体应用于 UI 组件),并为此设计了一个干净的解决方案。

首先,你需要更新支持库26+(你可能还需要更新你的gradle{4.0+}、android studio),然后你可以创建一个名为font的新资源文件夹。在此文件夹中,您可以放置​​字体资源(.tff,...)。
然后您需要覆盖默认应用程序并强制将您的自定义字体放入其中:)

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

注意:如果您想支持 API 版本低于 16 的设备,则必须使用应用程序命名空间而不是 android!

Finally, Google realized the severity of this problem (applying custom font to UI components) and they devised a clean solution for it.

First, you need to update to support library 26+ (you may also need to update your gradle{4.0+}, android studio), then you can create a new resource folder called font. In this folder, you can put your font resources (.tff,...).
Then you need to override the default app them and force your custom font into it :)

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

Note: if you want to support devices with older API than 16, you have to use app namespace instead of android!

韵柒 2024-09-06 14:54:49

我还想改进韦斯顿对 API 21 Android 5.0 的回答。

当我使用 DEFAULT 字体时,我在 Samsung s5 上也遇到了同样的问题。 (与其他字体一起工作正常)

我设法通过在 XML 文件中为每个 Textview 或 Button

<TextView
android:layout_width="match_parent"
android:layout_height="39dp"
android:textColor="@color/abs__background_holo_light"
android:textSize="12sp"
android:gravity="bottom|center"
android:typeface="sans" />

以及 MyApplication 类设置字体(例如“sans”)来使其工作:

public class MyApplication extends Application {
    @Override
    public void onCreate() {
    TypefaceUtil.overrideFont(getApplicationContext(), "SANS_SERIF",
    "fonts/my_font.ttf");
    }
}

希望它有帮助。

I would also like to improve weston's answer for API 21 Android 5.0.

I had the same issue on my Samsung s5, when using DEFAULT font. (with the others fonts it's working fine)

I managed to make it working by setting the typeface ("sans" for example) in XML files, for each Textview or Button

<TextView
android:layout_width="match_parent"
android:layout_height="39dp"
android:textColor="@color/abs__background_holo_light"
android:textSize="12sp"
android:gravity="bottom|center"
android:typeface="sans" />

and in MyApplication Class :

public class MyApplication extends Application {
    @Override
    public void onCreate() {
    TypefaceUtil.overrideFont(getApplicationContext(), "SANS_SERIF",
    "fonts/my_font.ttf");
    }
}

Hope it helps.

秉烛思 2024-09-06 14:54:49

此解决方案在某些情况下无法正常工作。
所以我扩展了它:

FontsReplacer.java

public class MyApplication extends Application {

    @Override
    public void onCreate() {
        FontsReplacer.replaceFonts(this);
        super.onCreate();
    }

}

https://gist.github.com/orwir/6df839e3527647adc2d56bfadfaad805

This solution does not work correctly in some situations.
So I extend it:

FontsReplacer.java

public class MyApplication extends Application {

    @Override
    public void onCreate() {
        FontsReplacer.replaceFonts(this);
        super.onCreate();
    }

}

https://gist.github.com/orwir/6df839e3527647adc2d56bfadfaad805

肤浅与狂妄 2024-09-06 14:54:49

Calligraphy 效果很好,但它不适合我,因为它不支持不同的粗细(粗体、斜体等)用于字体系列。

所以我尝试了 Fontain,它允许您定义自定义视图并应用它们自定义字体系列。

为了使用 Fontain,您应该将以下内容添加到您的应用程序模块 build.gradle:

compile 'com.scopely:fontain:1.0.0'

然后,您应该使用 FontTextView,而不是使用常规 TextView,

其中包含大写和粗体内容的 FontTextView 示例:

 <com.scopely.fontain.views.FontTextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/black"
            android:textColor="@android:color/white"
            android:textSize="11dp"
            android:gravity="center"
            android:id="@+id/tv1"
            app:font_family="myCustomFont"
            app:caps_mode="characters"
            app:font_weight="BOLD"/>

Calligraphy works pretty well, but it is not suitable for me, since it does not support different weights (bold, italic, etc) for a font-family.

So I tried Fontain, which allows you to define custom Views and apply them custom font families.

in order to use Fontain, you should add the following to your app module build.gradle:

compile 'com.scopely:fontain:1.0.0'

Then, instead of using regular TextView, you should use FontTextView

Example of FontTextView with uppercase and bold content:

 <com.scopely.fontain.views.FontTextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/black"
            android:textColor="@android:color/white"
            android:textSize="11dp"
            android:gravity="center"
            android:id="@+id/tv1"
            app:font_family="myCustomFont"
            app:caps_mode="characters"
            app:font_weight="BOLD"/>
凉世弥音 2024-09-06 14:54:49
package com.theeasylearn.demo.designdemo;
import android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.widget.TextView;

public class MyButton extends TextView {

    public MyButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public MyButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public MyButton(Context context) {
        super(context);
        init();
    }

    private void init() {

            Typeface tf =
                    Typeface.createFromAsset(
                            getContext().getAssets(), "angelina.TTF");
            setTypeface(tf);

    }

}
package com.theeasylearn.demo.designdemo;
import android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.widget.TextView;

public class MyButton extends TextView {

    public MyButton(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public MyButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public MyButton(Context context) {
        super(context);
        init();
    }

    private void init() {

            Typeface tf =
                    Typeface.createFromAsset(
                            getContext().getAssets(), "angelina.TTF");
            setTypeface(tf);

    }

}
时光沙漏 2024-09-06 14:54:49

要更改 TextView 的默认字体系列,请覆盖应用主题中的 textViewStyle。

要在 fontFamily 中使用自定义字体,请使用支持库中的字体资源。

该功能已在 Android 26 中添加,但通过 supportlib 向后移植到旧版本。

https://developer.android.com/guide/topics/resources/字体资源.html
https: //developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html#using-support-lib

For changing default font family of the TextViews, override textViewStyle in your app theme.

For using custom font in fontFamily, use font resources which is in support library.

The feature was added in Android 26 but backported to older versions via supportlib.

https://developer.android.com/guide/topics/resources/font-resource.html
https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html#using-support-lib

伤痕我心 2024-09-06 14:54:49

自从 Android Oreo 及其支持库 (26.0.0) 发布以来,您可以轻松地做到这一点。请参阅此答案在另一个问题中。

基本上你的最终风格将如下所示:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
   <item name="fontFamily">@font/your_font</item> <!-- target android sdk versions < 26 and > 14 -->
</style>

Since the release of Android Oreo and its support library (26.0.0) you can do this easily. Refer to this answer in another question.

Basically your final style will look like this:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
   <item name="fontFamily">@font/your_font</item> <!-- target android sdk versions < 26 and > 14 -->
</style>
魔法少女 2024-09-06 14:54:49

我发现了 calligraphy 3 库coderwall 的帖子 作为我的最终结果。

I found the mixture of calligraphy 3 library and coderwall's post as my ultimate result.

痴梦一场 2024-09-06 14:54:49

是的,可以为整个应用程序设置字体。

实现此目的的最简单方法是将所需的字体与您的应用程序打包在一起。

为此,只需在项目根目录中创建一个 assets/ 文件夹,然后将您的字体(在
资产中的 TrueType(或 TTF 形式)。

例如,您可以创建 assets/fonts/ 并将 TTF 文件放入其中。

public class FontSampler extends Activity {
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
TextView tv=(TextView)findViewById(R.id.custom);

Typeface face=Typeface.createFromAsset(getAssets(), "fonts/HandmadeTypewriter.ttf");
tv.setTypeface(face);
}
}

Yes, its possible to set the font to the entire application.

The easiest way to accomplish this is to package the desired font(s) with your application.

To do this, simply create an assets/ folder in the project root, and put your fonts (in
TrueType, or TTF, form) in the assets.

You might, for example, create assets/fonts/ and put your TTF files in there.

public class FontSampler extends Activity {
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
TextView tv=(TextView)findViewById(R.id.custom);

Typeface face=Typeface.createFromAsset(getAssets(), "fonts/HandmadeTypewriter.ttf");
tv.setTypeface(face);
}
}
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