Android Navigation drawer not displaying hamburger

Question

Why is my navigation drawer in android not displaying hamburger icon. I have done everything as it is supposed to be done by it is still not getting displayed?

            public class Main extends ActionBarActivity {

            private String[] mPlanetTitles;
            private DrawerLayout mDrawerLayout;
            private ListView mDrawerList;
            private CharSequence mTitle;
            private ActionBarDrawerToggle mDrawerToggle;

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

                mTitle = "test";

                ArrayList<Integer> draw=new ArrayList();
                draw.add(R.drawable.elec);draw.add(R.drawable.mob);draw.add(R.drawable.auto);draw.add(R.drawable.pet);draw.add(R.drawable.est);

                mPlanetTitles = new String[]{"Electronic ads", "Mobile ads", "Automobile ads","Pets ads","Real Estate ads"};
                mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
                mDrawerList = (ListView) findViewById(R.id.left_drawer);
                Adapt c=new Adapt(this,draw);
                mDrawerList.setAdapter(c);

                DisplayMetrics displayMetrics =getApplicationContext().getResources().getDisplayMetrics();
                int height=(int)((300 * displayMetrics.density) + 0.5);


                GridView g=(GridView)findViewById(R.id.gridview);


                ImageAdapter a=new ImageAdapter(this,draw);
                g.setAdapter(a);
                g.setOnItemClickListener(new AdapterView.OnItemClickListener() {


                     @Override
                    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                        startActivity(new Intent(Main.this, MainActivity.class));
                    }
                });


                // Set the adapter for the list view
            //    mDrawerList.setAdapter(new ArrayAdapter<String>(this,
                       // R.layout.drawer_list_item, mPlanetTitles));
                // Set the list's click listener
                mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                        mDrawerList.setItemChecked(i, true);
                        //setTitle(mPlanetTitles[position]);
                        mDrawerLayout.closeDrawer(mDrawerList);
                    }
                });

                mDrawerToggle = new ActionBarDrawerToggle(
                        this,                  /* host Activity */
                        mDrawerLayout,         /* DrawerLayout object */
                        R.drawable.ic_drawer,  /* nav drawer icon to replace 'Up' caret */
                        R.string.drawer_open,  /* "open drawer" description */
                        R.string.drawer_close  /* "close drawer" description */
                ) {

                    /** Called when a drawer has settled in a completely closed state. */
                    public void onDrawerClosed(View view) {
                        mDrawerToggle.syncState();
                        getSupportActionBar().setTitle(mTitle);
                        invalidateOptionsMenu();
                    }

                    /** Called when a drawer has settled in a completely open state. */
                    public void onDrawerOpened(View drawerView) {
                        mDrawerToggle.syncState();
                        getSupportActionBar().setTitle(mTitle);
                        mDrawerList.bringToFront();
                        invalidateOptionsMenu();
                    }

                };

                // Set the drawer toggle as the DrawerListener
                mDrawerLayout.setDrawerListener(mDrawerToggle);

                getSupportActionBar().setDisplayHomeAsUpEnabled(true);
                getSupportActionBar().setHomeButtonEnabled(true);
                getSupportActionBar().setIcon(R.drawable.ic_drawer);


            }





            @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;
            }

            @Override
            protected void onPostCreate(Bundle savedInstanceState) {

                super.onPostCreate(savedInstanceState);
                mDrawerToggle.syncState();

                // Sync the toggle state after onRestoreInstanceState has occurred.

            }





            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                super.onConfigurationChanged(newConfig);
                mDrawerToggle.onConfigurationChanged(newConfig);
            }

            @Override
            public boolean onOptionsItemSelected(MenuItem item) {
                // Pass the event to ActionBarDrawerToggle, if it returns
                // true, then it has handled the app icon touch event
                if (mDrawerToggle.onOptionsItemSelected(item)) {
                    return true;
                }
                // Handle your other action bar items...

                return super.onOptionsItemSelected(item);
            }

            /**
             * Swaps fragments in the main content view
             */
            private void selectItem(int position) {
                Toast.makeText(this, R.string.app_name, Toast.LENGTH_SHORT).show();

                // Highlight the selected item, update the title, and close the drawer
                mDrawerList.setItemChecked(position, true);
                setTitle(mPlanetTitles[position]);
                mDrawerLayout.closeDrawer(mDrawerList);
            }




            @Override
            public void setTitle(CharSequence title) {
                mTitle = title;
                getSupportActionBar().setTitle(mTitle);
            }

            private class DrawerItemClickListener implements ListView.OnItemClickListener {
                @Override
                public void onItemClick(AdapterView parent, View view, int position, long id) {
                    selectItem(position);
                }
            }

        }

This is my layout file.

           <android.support.v4.widget.DrawerLayout
            xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/drawer_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:context=".MainActivity">

            <!-- The main content view -->
            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">
            <GridView
                android:id="@+id/gridview"
                android:layout_width="match_parent"
                android:numColumns="3"
                android:gravity="center"
                android:stretchMode="columnWidth"
                android:verticalSpacing="10dp"
                android:horizontalSpacing="10dp"
                android:layout_height="match_parent"/>
            </RelativeLayout>
            <!-- The navigation drawer -->
            <ListView
                android:id="@+id/left_drawer"
                android:layout_width="240dp"
                android:layout_height="match_parent"
                android:layout_gravity="start"
                android:choiceMode="singleChoice"

                android:divider="@android:color/transparent"
                android:dividerHeight="0dp"
                />
        </android.support.v4.widget.DrawerLayout>

Why is icon hamburger not showing?

Answer 1

Also remember that, ActionBarActivity is Deprecated use: AppCompatActivity and about NavigationDrawer you should use NavigationView.

Answer 2

It looks like you are using the deprecated version of ActionBarDrawerToggle found in v4 of the support library. Your IDE should be warning you about this usage. You are also using the deprecated ActionBarActivity.

You should switch to the new ActionBarDrawerToggle found in the v7 support library.

Swapping the newer one in is easy- just change your import and remove the R.drawable.ic_drawer parameter. The new toggle provides the drawer drawable for you.