导航抽屉未显示

Question

So literally I copied everything from sample android app for navigation drawer, in sample app it shows, in my it does not.

I'll paste the code below, you tell me if you need any more files!

Here's the code

public class NavigacijskiIzbornik extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_navigacijski_izbornik);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        FragmentManager fm = getSupportFragmentManager();
        fm.beginTransaction().replace(R.id.content_frame, new NavigacijaPrviFragment()).commit();
    }


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

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

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        FragmentManager fm = getSupportFragmentManager();
        int id = item.getItemId();

        if (id == R.id.nav_prviLayout) {
            fm.beginTransaction().replace(R.id.content_frame, new NavigacijaDrugiFragment()).commit();

        } else if (id == R.id.nav_drugiLayout) {


        } else if (id == R.id.nav_treciLayout) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

Activity of drawer

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item android:id="@+id/nav_prviLayout" android:icon="@android:drawable/ic_menu_camera"
            android:title="Import" />
        <item android:id="@+id/nav_drugiLayout" android:icon="@android:drawable/ic_menu_gallery"
            android:title="Gallery" />
        <item android:id="@+id/nav_treciLayout" android:icon="@android:drawable/ic_menu_slideshow"
            android:title="Slideshow" />
        <item android:id="@+id/nav_manage" android:icon="@android:drawable/ic_menu_manage"
            android:title="Tools" />
    </group>

    <item android:title="Communicate">
        <menu>
            <item android:id="@+id/nav_share" android:icon="@android:drawable/ic_menu_share"
                android:title="Share" />
            <item android:id="@+id/nav_send" android:icon="@android:drawable/ic_menu_send"
                android:title="Send" />
        </menu>
    </item>

</menu>

Activity navigacijski izbornik

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">



    <include
        layout="@layout/app_bar_navigacijski_izbornik"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />



    <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:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_navigacijski_izbornik"
        app:menu="@menu/activity_navigacijski_izbornik_drawer" />



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

Answer 1

do like bellow..

  <RelativeLayout
            android:id="@+id/drawer_container"
            android:layout_width="280dp"
            android:layout_height="match_parent"
            android:layout_gravity="left"
            android:background="@android:color/white"
            android:visibility="visible">

            <include
                android:id="@+id/rel_drawer_app"
                layout="@layout/home_drawer" />
        </RelativeLayout>