How to create a class with a Navigationdrawer to use in multiple Activities?

Question

I started studying Android development a little while ago, I saw that to use a Navigationdrawer the recommended is to use fragments to change a Framelayout in the main Activity, but in the new activities that create, did not want to have to put all the code of the Navigationdrawer again, wanted to know how to create a menu to use in any one.

Does anyone have any tips for me?

EDIT:

Mainactivity.java

public class MainActivity extends GenericActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setUpDrawerLayout();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

Genericactivity.java

public class GenericActivity extends AppCompatActivity {

    protected DrawerLayout drawerLayout;
    protected Toolbar toolbar;
    protected boolean drawerLayoutEnable;
    protected NavigationView navigationView;
    protected ActionBarDrawerToggle toggle;

    protected void setUpDrawerLayout(){
        this.drawerLayoutEnable = true;

        toolbar = (Toolbar)findViewById(R.id.toolbar);
        if(toolbar !=null){
            setSupportActionBar(toolbar);
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
            getSupportActionBar().setHomeButtonEnabled(true);

            drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
            setUpDrawerToggle();
            setUpNavigationView();
        }
    }

    private void setUpNavigationView() {
        navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener((NavigationView.OnNavigationItemSelectedListener) this);
    }

    private void setUpDrawerToggle(){
        toggle = new ActionBarDrawerToggle(
                this, 
                drawerLayout, 
                toolbar, 
                R.string.navigation_drawer_open, 
                R.string.navigation_drawer_close);
        drawerLayout.setDrawerListener(toggle);
        toggle.syncState();
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
            drawerLayout.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }
}

activity_generic.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_base"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.example.rafael.elite.BaseActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout" //Seria este o drawer_layout que eu tenho que referenciar?
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="?attr/actionBarSize"
        android:fitsSystemWindows="true"
        tools:openDrawer="start">

        <android.support.design.widget.NavigationView
            android:id="@+id/nav_view"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:paddingTop="24dp"
            app:headerLayout="@layout/nav_drawer_header"
            app:menu="@menu/menu_generic_activity" />

</android.support.v4.widget.DrawerLayout>

Answer 1

Well, that was a question that I faced when I decided to implement Navigationdrawer in my app as well, mainly because I would like to have activities in which I use it and other activities that I don’t use it. And mainly, I did not want to duplicate code by the classes, so after researching in several tutorials I adapted and arrived at this result below, in summary but you will understand the concept.

I created a Genericactivity where all other activities of my application will extend it:

public abstract class GenericActivity extends AppCompatActivity {
    protected DrawerLayout drawerLayout;
    protected ActionBarDrawerToggle drawerToggle;
    protected NavigationView navigationView;
    protected NavigationViewMenuHandler navigationMenuHandler;
    //Com essa variável eu valido se a activity possui o NavigationDrawer
    //para realizar determinadas ações, ou não.
    protected boolean drawerLayoutEnable;

    //esse método é chamado pelas activities que extendem esta classe
    //e desejam ter um NavigationDrawer.
    protected void setUpDrawerLayout() {
        this.drawerLayoutEnable = true;

        //Toda a lógica de criação do NavigationDrawer vai neste método
        //Atualize com suas regras caso necessário
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_black_36dp);
            actionBar.setDisplayHomeAsUpEnabled(true);

            drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
            setUpDrawerToggle(); //configura o DrawerToggle
            setUpNavigationView(); //configura a NavigationView
        }
    }

    //Métodos private setUpDrawerToggle() e setUpNavigationView()
}

Now all activities of my application that wish to have the same Navigationdrawer configured extend Genericactivity and just call the method setUpDrawerLayout() in the onCreate().

For example:

public class AppFootActivity extends GenericActivity {

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.app_activity);
        //Chamo a configuração do NavigationDrawer. Caso eu não queira que
        //minha activity tenha um, basta não chamá-lo.
        setUpDrawerLayout();

        //Demais códigos da activity
    }

}

This same logic can be applied to other components like Toolbar.

I took into consideration that you already know how to implement the Navigationdrawer and have only the doubt of how to do it in various activities.

Hug.