This is a simplified Android fragment loader that helps cut down on boilerplate in your apps.

FragmentLoader.java

package com.buenocodigo.utilities;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.os.Bundle;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

/**
 * Have fun using this, attribution is not necessary and I'm obviously not
 * taking responsibility if this is used in a device to take over the world.
 * 
 * example usage - serviceFragment = (serviceFragment) 
 *                      FragmentLoader.addFragment(ServiceFragment.class, this);
 * Created by jbueno on 9/8/2015.
 */
public class FragmentLoader {

    public static Fragment addFragment(Class fragmentType, Activity activity) {
        return addFragment(fragmentType, activity, fragmentType.getName());
    }

    public static Fragment addFragment(Class fragmentType, Activity context, String tag){
        return addFragment(fragmentType, context, tag, null);
    }

    public static Fragment addFragment(Class fragmentType, Activity context, Bundle args){
        return addFragment(fragmentType, context, fragmentType.getName(), args);
    }

    public static Fragment addFragment(Class fragmentType, Activity context, String tag, Bundle args) {
        FragmentManager fm = context.getFragmentManager();

        Fragment fragment = fm.findFragmentByTag(tag);
        if (fragment == null){
            try{
                Constructor<?> ctor = Class.forName(fragmentType.getName()).getConstructor();
                fragment = (Fragment) ctor.newInstance();
                if (args != null){
                    fragment.setArguments(args);
                }
                fm.beginTransaction().add(fragment, tag).commit();
            // can't collapse if statements prior to API 17
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            }
        }
        return fragment;
    }
}