MainActivity.java

package com.aaronminijob.minijob;

import android.os.Bundle;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

import com.roughike.bottombar.BottomBar;
import com.roughike.bottombar.OnMenuTabSelectedListener;

public class MainActivity extends AppCompatActivity {
    private CoordinatorLayout coordinatorLayout;


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

        coordinatorLayout = (CoordinatorLayout) findViewById(R.id.three_buttons_activity);

        BottomBar bottomBar = BottomBar.attach(this, savedInstanceState);
        bottomBar.setItemsFromMenu(R.menu.three_buttons_menu, new OnMenuTabSelectedListener() {
            @Override
            public void onMenuItemSelected(int itemId) {
                switch (itemId) {
                    case R.id.hand:
                        Snackbar.make(coordinatorLayout, "Recent Item Selected", Snackbar.LENGTH_LONG).show();
                        break;
                    case R.id.stern:
                        Snackbar.make(coordinatorLayout, "Favorite Item Selected", Snackbar.LENGTH_LONG).show();
                        break;
                    case R.id.chat:
                        Snackbar.make(coordinatorLayout, "Location Item Selected", Snackbar.LENGTH_LONG).show();
                        break;
                    case R.id.einstellungen:
                        Snackbar.make(coordinatorLayout, "Location Item Selected", Snackbar.LENGTH_LONG).show();
                        break;
                }
            }
        });
        // Set the color for the active tab. Ignored on mobile when there are more than three tabs.
        bottomBar.setActiveTabColor("#C2185B");

// Use the dark theme. Ignored on mobile when there are more than three tabs.
        bottomBar.useDarkTheme(true);

// Use custom text appearance in tab titles.
        bottomBar.setTextAppearance(R.style.MyTextAppearance);

// Use custom typeface that's located at the "/src/main/assets" directory. If using with
// custom text appearance, set the text appearance first.
        bottomBar.setTypeFace("MyFont.ttf");
    }

}