Android 自定义字体

1 全局定义字体

1.准备好字体包 .ttf
2.main文件夹下新建,assets/fonts,将字体包复制到文件夹下
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3.封装一个字体类，拿一个大佬写的

import android.app.Activity;import android.content.Context;import android.graphics.Typeface;import android.support.annotation.NonNull;import android.text.TextUtils;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import java.lang.reflect.Field;public class TypefaceUtil {   /**    * 为给定的字符串添加HTML红色标记，当使用Html.fromHtml()方式显示到TextView 的时候其将是红色的    *    * @param string 给定的字符串    * @return    */   public static String addHtmlRedFlag(String string) {       return "" + string + "";   }   /**    * 将给定的字符串中所有给定的关键字标红    *    * @param sourceString 给定的字符串    * @param keyword      给定的关键字    * @return 返回的是带Html标签的字符串，在使用时要通过Html.fromHtml()转换为Spanned对象再传递给TextView对象    */   public static String keywordMadeRed(String sourceString, String keyword) {       String result = "";       if (sourceString != null && !"".equals(sourceString.trim())) {           if (keyword != null && !"".equals(keyword.trim())) {               result = sourceString.replaceAll(keyword, "" + keyword + "");           } else {               result = sourceString;           }       }       return result;   }   /**    * Replace the font of specified view and it's children
    * @param root The root view.    * @param fontPath font file path relative to 'assets' directory.    */   public static void replaceFont(@NonNull View root, String fontPath) {       if (root == null || TextUtils.isEmpty(fontPath)) {           return;       }       if (root instanceof TextView) { // If view is TextView or it's subclass, replace it's font           TextView textView = (TextView)root;           int style = Typeface.NORMAL;           if (textView.getTypeface() != null) {               style = textView.getTypeface().getStyle();           }           textView.setTypeface(createTypeface(root.getContext(), fontPath), style);       } else if (root instanceof ViewGroup) { // If view is ViewGroup, apply this method on it's child views           ViewGroup viewGroup = (ViewGroup) root;           for (int i = 0; i < viewGroup.getChildCount(); ++i) {               replaceFont(viewGroup.getChildAt(i), fontPath);           }       }   }   /**    * Replace the font of specified view and it's children
    * 通过递归批量替换某个View及其子View的字体改变Activity内部控件的字体(TextView,Button,EditText,CheckBox,RadioButton等)    * @param context The view corresponding to the activity.    * @param fontPath font file path relative to 'assets' directory.    */   public static void replaceFont(@NonNull Activity context, String fontPath) {       replaceFont(getRootView(context),fontPath);   }   /*    * Create a Typeface instance with your font file    */   public static Typeface createTypeface(Context context, String fontPath) {       return Typeface.createFromAsset(context.getAssets(), fontPath);   }   /**    * 从Activity 获取 rootView 根节点    * @param context    * @return 当前activity布局的根节点    */   public static View getRootView(Activity context)   {       return ((ViewGroup)context.findViewById(android.R.id.content)).getChildAt(0);   }   /**    * 通过改变App的系统字体替换App内部所有控件的字体(TextView,Button,EditText,CheckBox,RadioButton等)    * @param context    * @param fontPath    * 需要修改style样式为monospace：    *///       public static void replaceSystemDefaultFont(@NonNull Context context, @NonNull String fontPath) {       replaceTypefaceField("MONOSPACE", createTypeface(context, fontPath));   }   /**    * Replace field in class Typeface with reflection.
    */   private static void replaceTypefaceField(String fieldName, Object value) {       try {           Field defaultField = Typeface.class.getDeclaredField(fieldName);           defaultField.setAccessible(true);           defaultField.set(null, value);       } catch (NoSuchFieldException e) {           e.printStackTrace();       } catch (IllegalAccessException e) {           e.printStackTrace();       }   }}

4.在appTheme 中设置一下

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

5.在 Application 中调用封装好的 TypeFaceUtil类

public class MyApplication extends Application {            @Override            public void onCreate() {                super.onCreate();                TypefaceUtil.replaceSystemDefaultFont(this,"fonts/my_font.ttf");            }}

运行！！！
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2 改变单个或某一类控件

写一个类继承 TextView ，重写 setTypeface 方法

private Typeface createTypeface(Context context, String fontPath) {        return Typeface.createFromAsset(context.getAssets(), fontPath);    }    @Override    public void setTypeface(Typeface tf, int style) {        super.setTypeface(createTypeface(getContext(),"fonts/fzzy.ttf"), style);    }

在layout文件中使用重写的控件

<com.laundrylang.laundrylangpda.view.FontTextView      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="这是一个TextView"/>

给控件单独设置字体

Typeface typeface = Typeface.createFromAsset(getAssets(), "fonts/my_font.ttf");textView.setTypeface(typeface);

Android(安卓)自定义字体

Android 自定义字体

1 全局定义字体

2 改变单个或某一类控件

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