title: how to open a different fragment on recyclerview OnClick
body: <p>I am using a <code>RecyclerView</code> to display my drawer list item in my <code>Navigation Drawer</code>. <code>OnClick</code> of the drawer list item, I am able to open different activities, however I would like to be able to open fragments which will be replacing the main activity layout.</p>
  
  <p>Is there a way to do this? </p>
  
  <pre><code>public class AdapterClass extends RecyclerView.Adapter&lt;AdapterClass.MyViewHolder&gt; {
      private LayoutInflater inflater;
      private Context context;
      List&lt;Information&gt; data = Collections.emptyList();
  
      public AdapterClass(Context context, List&lt;Information&gt; data) {
          this.context = context;
  
          inflater = LayoutInflater.from(context);
          this.data = data;
      }
  
      @Override
      public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
          View view = inflater.inflate(R.layout.custom_row, parent, false);
          MyViewHolder holder = new MyViewHolder(view);
          return holder;
      }
  
      @Override
      public void onBindViewHolder(MyViewHolder holder, int position) {
          Information current = data.get(position);
          holder.title.setText(current.title);
          holder.icon.setImageResource(current.iconId);
  
      }
  
      @Override
      public int getItemCount() {
          return data.size();
      }
  
      class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
          TextView title;
          ImageView icon;
  
          public MyViewHolder(View itemView) {
              super(itemView);
              context = itemView.getContext();
              title = (TextView) itemView.findViewById(R.id.listText);
              icon = (ImageView) itemView.findViewById(R.id.listIcon);
              itemView.setClickable(true);
              itemView.setOnClickListener(this);
          }
  
          @Override
          public void onClick(View v) {
  
              final Intent intent;
              switch (getPosition()) {
                  case 0:
                      intent = new Intent(context, next.class);
                      break;
  
                  case 1:
                      intent = new Intent(context, next.class);
                      break;
  
                  case 2:
                      intent = new Intent(context, next.class);
                      break;
                  default:
                      intent = new Intent(context, next.class);
                      break;
              }
              context.startActivity(intent);
          }
      }
  };
  </code></pre>
  
  <p>MainActivity.java</p>
  
  <pre><code>public class MainActivity extends ActionBarActivity {
  
      private Toolbar toolbar;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          toolbar = (Toolbar) findViewById(R.id.app_bar);
          setSupportActionBar(toolbar);
          getSupportActionBar().setDisplayShowHomeEnabled(true);
          NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment)
                  getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
          drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), toolbar);
      }
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.menu_main, 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);
      }
  }
  </code></pre>
  
  <p>NavigationDrawerFragment.java</p>
  
  <pre><code>public class NavigationDrawerFragment extends Fragment {
      private ActionBarDrawerToggle mDrawerToggle;
      private DrawerLayout mDrawerLayout;
      private boolean mUserLearnedDrawer;
      private boolean mFromSavedInstanceState;
      public static final String PREF_FILE_NAME = "testpref";
      public static final String KEY_USER_LEARNED_DRAWER = "user_learned_drawer";
      private View containerView;
      private AdapterClass adapter;
      private RecyclerView recyclerView;
  
      public NavigationDrawerFragment() {
          // Required empty public constructor
      }
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          mUserLearnedDrawer = Boolean.valueOf(readFromPreferences(getActivity(), KEY_USER_LEARNED_DRAWER, "false"));
          if (savedInstanceState != null) {
              mFromSavedInstanceState = true;
          }
      }
  
      @Override
      public View onCreateView(LayoutInflater inflater, ViewGroup container,
                               Bundle savedInstanceState) {
          View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
          recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
  
          adapter = new AdapterClass(getActivity(), getData());
          recyclerView.setAdapter(adapter);
          recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
          return layout;
      }
  
      public static List&lt;Information&gt; getData() {
          List&lt;Information&gt; data = new ArrayList&lt;&gt;();
          int[] icons = {R.drawable.ic_menu_check, R.drawable.ic_menu_check, R.drawable.ic_menu_check, R.drawable.ic_menu_check};
          String[] titles = {"My Cart", "Lotion", "Deodorants", "Gels"};
  
          for (int i = 0; i &lt; titles.length &amp;&amp; i &lt; icons.length; i++) {
              Information current = new Information();
              current.iconId = icons[i];
              current.title = titles[i];
              data.add(current);
          }
          return data;
      }
  
      public void setUp(int fragmentId, DrawerLayout drawerLayout, 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);
                  if (!mUserLearnedDrawer) {
                      mUserLearnedDrawer = true;
                      saveToPreferences(getActivity(), KEY_USER_LEARNED_DRAWER, mUserLearnedDrawer + "");
                  }
  
              }
  
  
              @Override
              public void onDrawerClosed(View drawerView) {
                  super.onDrawerClosed(drawerView);
  
  
              }
  
          };
          if (!mUserLearnedDrawer &amp;&amp; !mFromSavedInstanceState) {
              mDrawerLayout.openDrawer(containerView);
          }
          mDrawerLayout.setDrawerListener(mDrawerToggle);
          mDrawerLayout.post(new Runnable() {
              @Override
              public void run() {
                  mDrawerToggle.syncState();
              }
          });
      }
  
  
      @TargetApi(Build.VERSION_CODES.GINGERBREAD)
      public static void saveToPreferences(Context context, String preferenceName, String preferenceValue) {
          SharedPreferences sharedPreferences = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE);
          SharedPreferences.Editor editor = sharedPreferences.edit();
          editor.putString(preferenceName, preferenceValue);
          editor.apply();
      }
  
      public static String readFromPreferences(Context context, String preferenceName, String defaultValue) {
          SharedPreferences sharedPreferences = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE);
          return sharedPreferences.getString(preferenceName, defaultValue);
      }
  }
  </code></pre>