Что означает ошибка «uses unchecked or unsafe operations. Recompile with -Xlint:unchecked for details.»?

Вот мой код

import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;

import com.example.social.R;
import com.example.social.Utils.SectionsStatePagerAdapter;

import java.util.ArrayList;

public class AccountSettingsActivity extends AppCompatActivity {

private static final String TAG = "AccountSettingsActivity";

private Context mContext;

private SectionsStatePagerAdapter pagerAdapter;
private ViewPager mViewPager;
private RelativeLayout mRelativeLayout;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_accountsettings);
mContext = AccountSettingsActivity.this;
Log.d(TAG, "onCreate: started.");
mViewPager = (ViewPager) findViewById(R.id.container);
mRelativeLayout = (RelativeLayout) findViewById(R.id.relLayout1);

setupSettingsList();
setupFragments();

//setup the backarrow fornavigating back to "ProfileActivity"
ImageView backArrow = (ImageView) findViewById(R.id.backArrow);
backArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "onClick: navigating back to 'ProfileActivity'");
finish();
}
});
}

private void setupFragments(){
pagerAdapter = new SectionsStatePagerAdapter(getSupportFragmentManager());
pagerAdapter.addFragment(new EditProfileFragment(), getString(R.string.edit_profile_fragment));
pagerAdapter.addFragment(new SignOutFragment(), getString(R.string.sign_out_fragment));
}

private void setViewPager(int fragmentNumber){
mRelativeLayout.setVisibility(View.GONE);
Log.d(TAG, "setViewPager: navigating to fragment #: " + fragmentNumber);
mViewPager.setAdapter(pagerAdapter);
mViewPager.setCurrentItem(fragmentNumber);
}

private void setupSettingsList(){
Log.d(TAG, "setupSettingsList: initializing 'Account Settings' list.");
ListView listView = (ListView) findViewById(R.id.lvAccountSettings);

ArrayList options = new ArrayList<>();
options.add(getString(R.string.edit_profile_fragment));
options.add(getString(R.string.sign_out_fragment));

ArrayAdapter adapter = new ArrayAdapter(mContext, android.R.layout.simple_list_item_1, options);
listView.setAdapter(adapter);

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.d(TAG, "onItemClick: navigating to fragment#:" + position);
setViewPager(position);
}
});
}
}