Contact list "scroll up" action button added.

app/src/main/java/com/xabber/android/ui/ContactListFragment.java

@@ -104,6 +104,8 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
                 this, (LinearLayout) view.findViewById(R.id.account_action_buttons));
         accountActionButtonsAdapter.onChange();
 
+        view.findViewById(R.id.fab_up_container).setOnClickListener(this);
+
         return view;
     }
 
@@ -368,6 +370,12 @@ public class ContactListFragment extends Fragment implements OnAccountChangedLis
 
     @Override
     public void onClick(View view) {
+        if (view.getId() == R.id.fab_up_container) {
+            scrollUp();
+            return;
+        }
+
+
         String account = accountActionButtonsAdapter.getItemForView(view);
         if (account == null) { // Check for tap on account in the title
             return;

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

@@ -15,6 +15,7 @@
 -->
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    xmlns:fab="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -73,14 +74,42 @@
     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_alignParentBottom="true"
+
         android:layout_alignParentRight="true"
         android:layout_alignParentEnd="true"
         android:orientation="vertical"
         android:layout_marginRight="16dp"
-        android:layout_marginBottom="8dp"
         android:id="@+id/account_action_buttons"
+        android:layout_above="@+id/fab_up_container"
         >
     </LinearLayout>
 
+    <FrameLayout
+        android:id="@+id/fab_up_container"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginRight="16dp"
+        android:layout_marginBottom="8dp"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
+        android:layout_alignParentBottom="true"
+        >
+        <com.melnykov.fab.FloatingActionButton
+            android:id="@+id/fab_up"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            fab:fab_type="mini"
+            fab:fab_colorNormal="@color/red_500"
+            fab:fab_colorPressed="@color/red_700"
+            fab:fab_colorRipple="@color/color_primary_light"
+            android:src="@drawable/ic_arrow_up_white_24dp"
+            android:clickable="false"
+
+            android:layout_marginTop="8dp"
+            android:layout_marginBottom="16dp"
+            android:layout_marginLeft="16dp"
+            android:layout_marginRight="16dp"
+            />
+    </FrameLayout>
+
 </RelativeLayout>