This class is used to change spinner view properties (text color, font, size etc) easily without setting adapter programmatically.

layout_spinner.xml

<android.support.v7.widget.AppCompatSpinner xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/labelSurveyNumber"
            android:layout_marginLeft="@dimen/activity_horizontal_margin"
            android:layout_marginRight="@dimen/activity_horizontal_margin"
            android:entries="@array/label_form1_sno_array"
            android:paddingTop="@dimen/standard_margin"
            android:paddingBottom="@dimen/standard_margin"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

SpinnerViewHelper.java

package com.locopixel.agri.ui.helper;

import android.database.DataSetObserver;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;

/**
 * Created by Qamar4P on 10/18/2017.
 */

public class SpinnerViewHelper {
  
  /*
   use it like new SpinnerViewHelper((Spinner)view.findViewById(R.id.labelSurveyNumber),(parent, v, position, id) -> UrduFontHelper.set(v));
  */
  
    public SpinnerViewHelper(Spinner spinner, AdapterView.OnItemClickListener l) {
        final SpinnerAdapter adapter = spinner.getAdapter();
        spinner.setAdapter(new SpinnerAdapter() {
            @Override
            public View getDropDownView(int position, View convertView, ViewGroup parent) {
                View view = adapter.getDropDownView(position, convertView, parent);
                l.onItemClick(null,view,position,getItemId(position));
                return view;
            }

            @Override
            public void registerDataSetObserver(DataSetObserver observer) {
                adapter.registerDataSetObserver(observer);
            }

            @Override
            public void unregisterDataSetObserver(DataSetObserver observer) {
                adapter.unregisterDataSetObserver(observer);
            }

            @Override
            public int getCount() {
                return adapter.getCount();
            }

            @Override
            public Object getItem(int position) {
                return adapter.getItem(position);
            }

            @Override
            public long getItemId(int position) {
                return adapter.getItemId(position);
            }

            @Override
            public boolean hasStableIds() {
                return adapter.hasStableIds();
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                View view = adapter.getView(position, convertView, parent);
                l.onItemClick(null,view,position,getItemId(position));
                return view;
            }

            @Override
            public int getItemViewType(int position) {
                return adapter.getItemViewType(position);
            }

            @Override
            public int getViewTypeCount() {
                return adapter.getViewTypeCount();
            }

            @Override
            public boolean isEmpty() {
                return adapter.isEmpty();
            }
        });
    }
}

UrduFontHelper.java

package com.locopixel.agri.ui.helper;

import android.content.res.AssetManager;
import android.graphics.Typeface;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.locopixel.agri.App;

/**
 * Created by Qamar4P on 10/18/2017.
 */

public class UrduFontHelper {
    private static Typeface font;

    public static void set(View... views) {
        if(font == null)
            font = Typeface.createFromAsset(App.instance.getAssets(),"fonts/Jameel Noori Nastaleeq.ttf");

        for (View view : views) {
            if(view instanceof ViewGroup){
                ViewGroup viewGroup = (ViewGroup) view;
                if(viewGroup.getChildCount() > 0)
                    set(getChildViews(viewGroup));
            }else if(view instanceof TextView){
                ((TextView)view).setTypeface(font);
            }
        }
    }

    private static View[] getChildViews(ViewGroup viewGroup) {
        View[] views = new View[viewGroup.getChildCount()];
        for (int i = 0; i < viewGroup.getChildCount(); i++) {
            views[i] = viewGroup.getChildAt(i);
        }
        return views;
    }
}