Android Custom Textview

attrs.xml

<declare-styleable name="CustomTextView">
        <attr name="fontName" format="string" />
    </declare-styleable>

CustomTextView.java

public class CustomTextView extends TextView {

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

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

    }

    public CustomTextView(Context context) {
        super(context);
        init(null);
    }

    private void init(AttributeSet attrs) {
        if (attrs!=null) {
             TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.CustomTextView);
             String fontName = a.getString(R.styleable.CustomTextView_fontName);
             if (fontName!=null) {
                 Typeface myTypeface = Typeface.createFromAsset(getContext().getAssets(), "fonts/"+fontName);
                 setTypeface(myTypeface);
             }
             a.recycle();
        }
    }

}

someActivity.xml

<com.abc.someclass.CustomTextView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" 
    app:fontName="/*name of your font from assets/font folder*/"/>

1. Create asset resource
2. Copy Pasta your custom font file into the asset
3. Create the Java class handler for custom text view
4. Declare in the attrs.xml
5. Use the custom in activity xml