Hides tool bar when scrolling on hashtag activity

app/src/main/java/fr/gouv/etalab/mastodon/activities/HashTagActivity.java

@@ -23,6 +23,7 @@ import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.RelativeLayout;
@@ -67,13 +68,14 @@ public class HashTagActivity extends AppCompatActivity implements OnRetrieveFeed
         SharedPreferences sharedpreferences = getSharedPreferences(Helper.APP_PREFS, android.content.Context.MODE_PRIVATE);
         int theme = sharedpreferences.getInt(Helper.SET_THEME, Helper.THEME_DARK);
         if( theme == Helper.THEME_LIGHT){
-            setTheme(R.style.AppTheme);
+            setTheme(R.style.AppTheme_NoActionBar);
         }else {
-            setTheme(R.style.AppThemeDark);
+            setTheme(R.style.AppThemeDark_NoActionBar);
         }
 
         setContentView(R.layout.activity_hashtag);
-
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
 
         if( getSupportActionBar() != null)
             getSupportActionBar().setDisplayHomeAsUpEnabled(true);

app/src/main/res/layout/activity_hashtag.xml

@@ -15,6 +15,36 @@
     You should have received a copy of the GNU General Public License along with Mastalab; if not,
     see <http://www.gnu.org/licenses>.
 -->
+<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">
+
+    <android.support.design.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context="fr.gouv.etalab.mastodon.activities.MainActivity">
+
+        <android.support.design.widget.AppBarLayout
+            android:id="@+id/appBar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:theme="@style/AppTheme.AppBarOverlay"
+            >
+            <android.support.v7.widget.Toolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="?attr/colorPrimary"
+                app:layout_scrollFlags="scroll|enterAlways"
+                android:theme="@style/AppThemeDark_NoActionBar"
+                app:popupTheme="?attr/popupOverlay"/>
+        </android.support.design.widget.AppBarLayout>
         <RelativeLayout
             xmlns:android="http://schemas.android.com/apk/res/android"
             android:paddingLeft="@dimen/fab_margin"
@@ -80,3 +110,5 @@
                     android:indeterminate="true" />
             </RelativeLayout>
         </RelativeLayout>
+    </android.support.design.widget.CoordinatorLayout>
+</android.support.v4.widget.DrawerLayout>