Error adding Pageviewadapter to Google Maps Android API

Question

It has three (3) buttons and a (1) tab with two (2) buttons on the map, like this that I add the code to create the Pageadapters I get error and I don’t know how to solve.

ERROR:

03-15 03:50:23.990 3051-3051/with.thiagosaadcorporation.servicescretin E/Androidruntime: FATAL EXCEPTION: main Process: with.thiagosaadcorporation.servicesecretaria, PID: 3051 java.lang.Runtimeexception: Unable to start Activity ComponentInfo{com.thiagosaadcorporation.atendimentosecretaria/com.thiagosaadcorporation.atendimentosecretaria.API.google.googleMaps.GoogleMapsActivity}: java.lang.Nullpointerexception at android.app.Activitythread.performLaunchActivity(Activitythread.java:2195) at android.app.Activitythread.handleLaunchActivity(Activitythread.java:2245) at android.app.Activitythread.access$800(Activitythread.java:135) at android.app.Activitythread$H.handleMessage(Activitythread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.Activitythread.main(Activitythread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.Internal.os.Zygoteinit$Methodandargscaller.run(Zygoteinit.java:779) at com.android.Internal.os.Zygoteinit.main(Zygoteinit.java:595) at Dalvik.system.Nativestart.main(Native Method) Caused by: java.lang.Nullpointerexception at com.thiagosaadcorporation.servicescretaria.API.google.googleMaps.Googlemapsactivity.setupViewPager(Googlemapsactivity.java:75) at com.thiagosaadcorporation.servicescretaria.API.google.googleMaps.Googlemapsactivity.onCreate(Googlemapsactivity.java:45) at android.app.Activity.performCreate(Activity.java:5231) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.Activitythread.performLaunchActivity(Activitythread.java:2159) at android.app.Activitythread.handleLaunchActivity(Activitythread.java:2245)  at android.app.Activitythread.access$800(Activitythread.java:135)  at android.app.Activitythread$H.handleMessage(Activitythread.java:1196)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:136)  at android.app.Activitythread.main(Activitythread.java:5017)  at java.lang.reflect.Method.invokeNative(Native Method)  at java.lang.reflect.Method.invoke(Method.java:515)  at com.android.Internal.os.Zygoteinit$Methodandargscaller.run(Zygoteinit.java:779)  at com.android.Internal.os.Zygoteinit.main(Zygoteinit.java:595)  at Dalvik.system.Nativestart.main(Native Method)

Googlemapsacitivity.java

package com.thiagosaadcorporation.atendimentosecretaria.API.google.googleMaps;

import android.support.design.widget.TabLayout;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Button;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.thiagosaadcorporation.atendimentosecretaria.API.fragments.SectionsPageAdapter;
import com.thiagosaadcorporation.atendimentosecretaria.API.fragments.tabs.MapInformationsFragment;
import com.thiagosaadcorporation.atendimentosecretaria.API.fragments.tabs.UserAccountFragment;
import com.thiagosaadcorporation.atendimentosecretaria.R;

public class GoogleMapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
    private static final String TAG = "GoogleMapsActivity";

    private SectionsPageAdapter mSectionsPageAdapter;
    private ViewPager mViewPager;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_google_maps);
        Log.d(TAG, "onCreate: STARTING..");

        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

        mSectionsPageAdapter = new SectionsPageAdapter(getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.container);
        setupViewPager(mViewPager);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
        tabLayout.setupWithViewPager(mViewPager);
    }


    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        // Add a marker in Sydney and move the camera
        LatLng sydney = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }

    private void setupViewPager(ViewPager viewPager) {
        SectionsPageAdapter adapter = new SectionsPageAdapter(getSupportFragmentManager());
        adapter.addFragment(new UserAccountFragment(), "TAB1");
        adapter.addFragment(new MapInformationsFragment(), "TAB2");
        viewPager.setAdapter(adapter);
    }
}

Sectionspageadapter.java

package com.thiagosaadcorporation.atendimentosecretaria.API.fragments;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by saadt on 15/03/2018.
 */

public class SectionsPageAdapter extends FragmentPagerAdapter {

    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public void addFragment(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    public SectionsPageAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

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