public class TextViewFont extends TextView {

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

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

    }

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

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

<com.eugene.fithealthmaingit.Custom.TextViewFont
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_weight="1"
            android:text="@string/dinner"
            android:textColor="@color/text_color"
            android:textSize="16sp"
            app:fontName="Roboto-Regular.ttf"/>