在MainActivity.java文件中，在调用其他活动时添加以下代码：

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    if (id == android.R.id.home) {
        onBackPressed();
        return true;
    }
    return super.onOptionsItemSelected(item);
}

在xml文件中将导航布局（nav_header.xml）添加到其他活动的布局文件中。在其他活动中，将以下代码添加到onCreate方法中：

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setHomeAsUpIndicator(R.drawable.ic_menu);
actionBar.setDisplayHomeAsUpEnabled(true);

NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
    @Override
    public boolean onNavigationItemSelected(MenuItem menuItem) {
        switch (menuItem.getItemId()) {
            case R.id.nav_item_home:
                Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                startActivity(intent);
                finish();
                break;
            case R.id.nav_item_profile:
                Intent intent_profile = new Intent(getApplicationContext(), ProfileActivity.class);
                startActivity(intent_profile);
                finish();
                break;
            case R.id.nav_item_settings:
                Intent intent_settings = new Intent(getApplicationContext(), SettingsActivity.class);
                startActivity(intent_settings);
                finish();

        }
        drawerLayout.closeDrawers();
        return true;
    }
});

DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.openDrawer, R.string.closeDrawer) {
    @Override
    public void onDrawerClosed(View drawerView) {
        super.onDrawerClosed(drawerView);
    }

    @Override
    public void onDrawerOpened(View drawerView) {
        super.onDrawerOpened(drawerView);
    }
};
drawerLayout.setDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();