Cannot reset or replace default font in the Android application -

i set default font on application, , don't think fits on ui, wanted reset it. don't know how reset it.

here codes, , solutions problem appreciated.

(1) first created fontoverride class replace default font new one.

public 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();     } } } 

(2) , created class named appconfig controls overall configuration of application.

    public class appconfig extends android.app.application {      public static string url_login = "http://marshall.hostzi.com/gruppo/";     public static string url_register = "http://marshall.hostzi.com/gruppo/";      @override     public void oncreate() {         super.oncreate();         fontsoverride.setdefaultfont(this, "monospace", "fonts/galderglynn.ttf");     } } 

(3) , here's style.xml file. there 1 item named monospace monospace replaced ganderglynn.ttf programatically.

<resources>  <!-- base application theme. --> <style name="apptheme" parent="theme.appcompat.light.darkactionbar">     <item name="android:typeface">monospace</item> </style> 

i tried switching galderglynn.ttf file one, wouldn't work, , fonts still in galderglynn font.

edit here's part of androidmanifest.xml file.

<application     android:name="com.marshall.gruppo.app.appcontroller"     android:allowbackup="true"     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme" > 

i think need add font in yourapp/src/main/assets/fonts/ this:(sorry, can't post image now)

and next steps, change fontpath in config

public class appconfig extends android.app.application {      public static string url_login = "http://marshall.hostzi.com/gruppo/";     public static string url_register = "http://marshall.hostzi.com/gruppo/";      @override     public void oncreate() {         super.oncreate();         fontsoverride.setdefaultfont(this, "monospace", "fonts/helveticaneue.ttf");     } } 

finally, recommend awesome libs change default font calligraphy: https://github.com/chrisjenx/calligraphy