Android TextView with Custom Fonts

In android, you can define your own custom fonts for the TextView in your application. You just need to download the required font from the internet, and then place it in assets/fonts folder. After putting fonts in the assets folder under fonts folder, you can access it in your java code through Typeface class. In this example, we are going to make a custom Android TextView that can change its font, by customizing its attributes from the XML.

Create an Android Studio Project

1. Open Android Studio and choose “Start a new Android Studio Project” in the welcome screen. Go to Chapter 1 – Getting Started with Android Programming for creating new Android Studio project.
2. Create a new folder named assets inside src/main/ folder. Then add a new folder named fonts inside src/main/assets folder. Now we are going to add some .ttf font file inside.
3. Create a new XML file inside /values/ folder, with the name attrs.xml. We should have the /values/attrs.xml file and paste the code below.

   <?xml version="1.0" encoding="utf-8"?>
   <resources>
       <declare-styleable name="MyTextView">
           <attr name="font" format="string" />
       </declare-styleable>
   </resources>

4. Create a new Java class file named MyTextView and paste the code below.

   package org.snowcorp.textview;
   import android.content.Context;
   import android.content.res.TypedArray;
   import android.graphics.Typeface;
   import android.util.AttributeSet;
   /**
    * Created by Akshay Raj on 28-04-2017.
    * akshay@snowcorp.org
    * www.snowcorp.org
    */
   public class MyTextView extends android.support.v7.widget.AppCompatTextView {
       public MyTextView(Context context, AttributeSet attrs, int defStyle) {
           super(context, attrs, defStyle);
           init(attrs);
       }
       public MyTextView(Context context, AttributeSet attrs) {
           super(context, attrs);
           init(attrs);
       }
       public MyTextView(Context context) {
           super(context);
           init(null);
       }
       private void init(AttributeSet attrs) {
           if (attrs != null) {
               TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MyTextView);
               String fontName = a.getString(R.styleable.MyTextView_font);
               try {
                   if (fontName != null) {
                       Typeface myTypeface = FontCache.get("fonts/" + fontName, getContext());
                       setTypeface(myTypeface);
                   }
               } catch (Exception e) {
                   e.printStackTrace();
               }
               a.recycle();
           }
       }
   }

5. Create another file named FontCache and copy below codes.

   package org.snowcorp.textview;
   import android.content.Context;
   import android.graphics.Typeface;
   import java.util.Hashtable;
   /**
    * Created by Akshay Raj on 28-04-2017.
    * akshay@snowcorp.org
    * www.snowcorp.org
    */
   class FontCache {
       private static Hashtable<String, Typeface> fontCache = new Hashtable<>();
       static Typeface get(String name, Context context) {
           Typeface tf = fontCache.get(name);
           if(tf == null) {
               try {
                   tf = Typeface.createFromAsset(context.getAssets(), name);
               }
               catch (Exception e) {
                   return null;
               }
               fontCache.put(name, tf);
           }
           return tf;
       }
   }

6. Add your Custom Text View in activity_main.xml file.

   <org.snowcorp.textview.MyTextView
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="Hello World!"
       android:textSize="30sp"
       android:padding="5dp"
       app:font="madariaga.ttf"/>

   If you want to change your TextView font then set your font in app:font="YOUR_FONT.ttf"
7. Now run your project.

Complete Source Code