MainActivity.java

package com.joanzapata.iconify.sample;

import android.os.Bundle;
import com.google.android.material.tabs.TabLayout;
import androidx.viewpager.widget.ViewPager;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;

import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.tabs)
    TabLayout tabLayout;
    @BindView(R.id.toolbar)
    Toolbar toolbar;
    @BindView(R.id.viewPager)
    ViewPager viewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);

        // Setup toolbar
        setSupportActionBar(toolbar);

        // Fill view pager
        viewPager.setAdapter(new FontIconsViewPagerAdapter(Font.values()));
        tabLayout.setupWithViewPager(viewPager);
    }
}