Closes #1. May need some fine tuning.

app/src/main/res/values/strings.xml

@@ -148,4 +148,8 @@
     <string name="acra_login">Enable logging</string>
     <string name="drawer_item_hidden_tags">Hidden Tags</string>
     <string name="unmark">Mark item as unread</string>
+    <string name="pref_header_offline">Offline and cache</string>
+    <string name="pref_switch_items_caching_off">Articles won\'t be saved to the device memory, and the app won\'t be usable offline.</string>
+    <string name="pref_switch_items_caching_on">Articles will be saved to the device memory and will be used for offline use.</string>
+    <string name="pref_switch_items_caching">Save items for offline use</string>
 </resources>

app/src/main/res/xml/pref_headers.xml

@@ -11,6 +11,12 @@
         android:icon="@drawable/ic_chrome_reader_mode_black_24"
         android:title="@string/pref_header_viewer"/>
 
+
+    <header
+        android:fragment="apps.amine.bou.readerforselfoss.settings.SettingsActivity$OfflinePreferenceFragment"
+        android:icon="@drawable/ic_signal_wifi_statusbar_not_connected"
+        android:title="@string/pref_header_offline"/>
+
     <header
         android:fragment="apps.amine.bou.readerforselfoss.settings.SettingsActivity$DebugPreferenceFragment"
         android:icon="@drawable/ic_bug_report"

app/src/main/res/xml/pref_offline.xml

@@ -0,0 +1,8 @@
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <SwitchPreference
+        android:defaultValue="false"
+        android:key="items_caching"
+        android:summaryOff="@string/pref_switch_items_caching_off"
+        android:summaryOn="@string/pref_switch_items_caching_on"
+        android:title="@string/pref_switch_items_caching" />
+</PreferenceScreen>