CODEWITHSUNDEEP
androidnavigation-drawerandroid-xmlandroidx
Sharp Sreejith
Sharp Sreejith

Reputation: 11

Why is the navigation drawer icon missing?

I need the Navigation drawer icon to be displayed in the top right corner of the activity. I have included the code which is not working properly. I am using android Studio 3.5.3, newest version

enter image description here

Java code:

  package com.example.myapplication;
  import android.os.Bundle;
  import com.google.android.material.floatingactionbutton.FloatingActionButton;
  import com.google.android.material.snackbar.Snackbar;
  import android.view.View;
  import androidx.navigation.NavController;
  import androidx.navigation.Navigation;
  import androidx.navigation.ui.AppBarConfiguration;
  import androidx.navigation.ui.NavigationUI;
  import com.google.android.material.navigation.NavigationView;
  import androidx.drawerlayout.widget.DrawerLayout;
  import androidx.appcompat.app.AppCompatActivity;
  import androidx.appcompat.widget.Toolbar;
  import android.view.Menu;

  public class MainActivity extends AppCompatActivity {

  private AppBarConfiguration mAppBarConfiguration;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    FloatingActionButton fab = findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
    DrawerLayout drawer = findViewById(R.id.drawer_layout);
    NavigationView navigationView = findViewById(R.id.nav_view);
    // Passing each menu ID as a set of Ids because each
    // menu should be considered as top level destinations.
    mAppBarConfiguration = new AppBarConfiguration.Builder(
            R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow,
            R.id.nav_tools, R.id.nav_share, R.id.nav_send)
            .setDrawerLayout(drawer)
            .build();

}

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

I have made some changes to Java and XML code. I am a beginner to Android Studio. Please help me to correct the mistake.

Here is the XML code

   <?xml version="1.0" encoding="utf-8"?>
   <RelativeLayout 
     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:layout_width="match_parent"
     android:layout_height="match_parent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior"
     tools:showIn="@layout/app_bar_main">
  </RelativeLayout>

Upvotes: 1

Views: 1861

Answers (1)

iiec
iiec

Reputation: 21

Try to add this:

supportActionBar?.setDisplayHomeAsUpEnabled(true)

in Android:

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

You may have a problem opening the menu. After that add this: (in kotlin)

override fun onOptionsItemSelected(item: MenuItem): Boolean {
    super.onOptionsItemSelected(item)
    return when (item.itemId) {
        android.R.id.home -> {
            drawer_layout.openDrawer(GravityCompat.START)
            true
        }
        else -> super.onOptionsItemSelected(item)
    }
}

Upvotes: 2

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