title: Add Icon in Navigation Drawer Manually
body: <p>im confuse to add icon beside title on navigation drawer, anyone know how to do that? 
  im following this lik for create some nav drawer <a href="http://www.androidhive.info/2015/04/android-getting-started-with-material-design/" rel="nofollow">here</a> , </p>
  
  <p>this my code</p>
  
  <p>FragmentDrawer.java</p>
  
  <pre><code>public class FragmentDrawer extends Fragment {
  
      private static String TAG = FragmentDrawer.class.getSimpleName();
  
      private RecyclerView recyclerView;
      private ActionBarDrawerToggle mDrawerToggle;
      private DrawerLayout mDrawerLayout;
      private NavigationDrawerAdapter adapter;
      private View containerView;
      private static String[] titles = null;
      private FragmentDrawerListener drawerListener;
  
      public FragmentDrawer() {
  
      }
  
      public void setDrawerListener(FragmentDrawerListener listener) {
          this.drawerListener = listener;
      }
  
      public static List&lt;NavDrawerItem&gt; getData() {
          List&lt;NavDrawerItem&gt; data = new ArrayList&lt;&gt;();
  
  
  
          // preparing navigation drawer items
          for (int i = 0; i &lt; titles.length; i++) {
              NavDrawerItem navItem = new NavDrawerItem();
              navItem.setTitle(titles[i]);
              data.add(navItem);
          }
          return data;
  
      }
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
  
          // drawer labels
          titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
      }
  
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
                               Bundle savedInstanceState) {
          // Inflating view layout
          View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
          recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
  
          adapter = new NavigationDrawerAdapter(getActivity(), getData());
          recyclerView.setAdapter(adapter);
          recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
          recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
              @Override
              public void onClick(View view, int position) {
                  drawerListener.onDrawerItemSelected(view, position);
                  mDrawerLayout.closeDrawer(containerView);
              }
  
              @Override
              public void onLongClick(View view, int position) {
  
              }
          }));
  
          return layout;
      }
  
  
      public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
          containerView = getActivity().findViewById(fragmentId);
          mDrawerLayout = drawerLayout;
          mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
              @Override
              public void onDrawerOpened(View drawerView) {
                  super.onDrawerOpened(drawerView);
                  getActivity().invalidateOptionsMenu();
              }
  
              @Override
              public void onDrawerClosed(View drawerView) {
                  super.onDrawerClosed(drawerView);
                  getActivity().invalidateOptionsMenu();
              }
  
              @Override
              public void onDrawerSlide(View drawerView, float slideOffset) {
                  super.onDrawerSlide(drawerView, slideOffset);
                  toolbar.setAlpha(1 - slideOffset / 2);
              }
          };
  
          mDrawerLayout.setDrawerListener(mDrawerToggle);
          mDrawerLayout.post(new Runnable() {
              @Override
              public void run() {
                  mDrawerToggle.syncState();
              }
          });
  
      }
  
      public static interface ClickListener {
          public void onClick(View view, int position);
  
          public void onLongClick(View view, int position);
      }
  
      static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
  
          private GestureDetector gestureDetector;
          private ClickListener clickListener;
  
          public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
              this.clickListener = clickListener;
              gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
                  @Override
                  public boolean onSingleTapUp(MotionEvent e) {
                      return true;
                  }
  
                  @Override
                  public void onLongPress(MotionEvent e) {
                      View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
                      if (child != null &amp;&amp; clickListener != null) {
                          clickListener.onLongClick(child, recyclerView.getChildPosition(child));
                      }
                  }
              });
          }
  
          @Override
          public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
  
              View child = rv.findChildViewUnder(e.getX(), e.getY());
              if (child != null &amp;&amp; clickListener != null &amp;&amp; gestureDetector.onTouchEvent(e)) {
                  clickListener.onClick(child, rv.getChildPosition(child));
              }
              return false;
          }
  
          @Override
          public void onTouchEvent(RecyclerView rv, MotionEvent e) {
          }
  
          @Override
          public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
  
          }
  
  
      }
  
      public interface FragmentDrawerListener {
          public void onDrawerItemSelected(View view, int position);
      }
  }
  </code></pre>
  
  <p>string.xml</p>
  
  <pre><code>&lt;string name="nav_item_home"&gt;Home&lt;/string&gt;
  &lt;string name="nav_item_friends"&gt;Friends&lt;/string&gt;
  &lt;string name="nav_item_notifications"&gt;Messages&lt;/string&gt;
  &lt;string name="nav_item_calculator"&gt;BMI Calculator&lt;/string&gt;
  &lt;string name="nav_item_listview"&gt;Test Json&lt;/string&gt;
  &lt;string name="nav_item_testabs"&gt;Test Tabs&lt;/string&gt;
  
  
  &lt;!-- navigation drawer item labels  --&gt;
  &lt;string-array name="nav_drawer_labels"&gt;
      &lt;item&gt;@string/nav_item_home&lt;/item&gt;
      &lt;item&gt;@string/nav_item_friends&lt;/item&gt;
      &lt;item&gt;@string/nav_item_notifications&lt;/item&gt;
      &lt;item&gt;@string/nav_item_calculator&lt;/item&gt;
      &lt;item&gt;@string/nav_item_listview&lt;/item&gt;
      &lt;item&gt;@string/nav_item_testabs&lt;/item&gt;
  &lt;/string-array&gt;
  
  &lt;array name="nav_drawer_icons"&gt;
      &lt;item&gt;@drawable/arm1&lt;/item&gt;
      &lt;item&gt;@drawable/abs2&lt;/item&gt;
      &lt;item&gt;@drawable/back&lt;/item&gt;
      &lt;item&gt;@drawable/leg&lt;/item&gt;
      &lt;item&gt;@drawable/shoulder&lt;/item&gt;
      &lt;item&gt;@drawable/achest&lt;/item&gt;
  &lt;/array&gt;
  </code></pre>
  
  <p>MainActivity.java</p>
  
  <pre><code>private void displayView(int position) {
      Fragment fragment = null;
      String title = getString(R.string.app_name);
      switch (position) {
          case 0:
              fragment = new HomeFragment();
              title = getString(R.string.nav_item_home);
              break;
          case 1:
              fragment = new FriendsFragment();
              title = getString(R.string.nav_item_friends);
              break;
          case 2:
              fragment = new MessagesFragment();
              title = getString(R.string.nav_item_notifications);
              break;
          case 3:
              fragment = new CalculatorFragment();
              title = getString(R.string.nav_item_calculator);
              break;
          case 4:
              fragment = new MovieFragment();
              title = getString(R.string.nav_item_listview);
              break;
          case 5:
              fragment = new TabFragment();
              title = getString(R.string.nav_item_testabs);
          default:
              break;
      }
  
      if (fragment != null) {
          FragmentManager fragmentManager = getSupportFragmentManager();
          FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
          fragmentTransaction.replace(R.id.container_body, fragment);
          fragmentTransaction.commit();
  
          // set the toolbar title
          getSupportActionBar().setTitle(title);
      }
  }
  </code></pre>
  
  <p>NavDrawwerItem.java</p>
  
  <pre><code>public class NavDrawerItem {
  private boolean showNotify;
  private String title;
  private int icon;
  
  public NavDrawerItem() {
  
  }
  
  public NavDrawerItem(boolean showNotify, String title, int icon) {
      this.showNotify = showNotify;
      this.title = title;
      this.icon = icon;
  }
  
  public boolean isShowNotify() {
      return showNotify;
  }
  
  public void setShowNotify(boolean showNotify) {
      this.showNotify = showNotify;
  }
  
  public String getTitle() {
      return title;
  }
  
  public int getIcon(){
      return this.icon;
  }
  
  public void setTitle(String title) {
      this.title = title;
  }
  
  public void setIcon(int icon){
      this.icon = icon;
  }
  </code></pre>