android - Font family resource file in support library

activity_main.xml

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="#d4d3ca"     android:padding="16dp"     android:orientation="vertical"     >     <TextView         android:id="@+id/text_view"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Regular font"         android:textSize="60sp"         android:textColor="#e92121"         android:fontFamily="@font/custom_font_family"         android:textStyle="normal"         />     <TextView         android:id="@+id/text_view2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Bold font"         android:textSize="60sp"         android:textColor="#1679ca"         android:fontFamily="@font/custom_font_family"         android:textStyle="bold"         />     <TextView         android:id="@+id/text_view3"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Italic font"         android:textSize="60sp"         android:textColor="#48792e"         android:fontFamily="@font/custom_font_family"         android:textStyle="italic"         />     <TextView         android:id="@+id/text_view4"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Bold italic font"         android:textSize="60sp"         android:textColor="#ab1ca3"         android:fontFamily="@font/custom_font_family"         android:textStyle="bold|italic"         /> </LinearLayout> 

MainActivity.java

 package com.cfsuman.me.androidcodesnippets;  import android.app.Activity; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {     private Context mContext;     private Activity mActivity;      private TextView mTextView;     private TextView mTextView2;     private TextView mTextView3;     private TextView mTextView4;      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the application context         mContext = getApplicationContext();         mActivity = MainActivity.this;          // Get the widget reference from xml layout         mTextView = (TextView) findViewById(R.id.text_view);         mTextView2 = (TextView) findViewById(R.id.text_view2);         mTextView3 = (TextView) findViewById(R.id.text_view3);         mTextView4 = (TextView) findViewById(R.id.text_view4);     } } 

res/font/custom_font_family.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:font="@font/ubuntu_mono_regular"         android:fontStyle="normal"         android:fontWeight="400"         app:font="@font/ubuntu_mono_regular"         app:fontStyle="normal"         app:fontWeight="400"         />     <font         android:font="@font/ubuntu_mono_bold"         android:fontStyle="normal"         android:fontWeight="700"         app:font="@font/ubuntu_mono_bold"         app:fontStyle="normal"         app:fontWeight="700"         />     <font         android:font="@font/ubuntu_mono_italic"         android:fontStyle="italic"         android:fontWeight="400"         app:font="@font/ubuntu_mono_italic"         app:fontStyle="italic"         app:fontWeight="400"         />     <font         android:font="@font/ubuntu_mono_bold_italic"         android:fontStyle="italic"         android:fontWeight="700"         app:font="@font/ubuntu_mono_bold_italic"         app:fontStyle="italic"         app:fontWeight="700"         /> </font-family>