app/src/main/res/menu/main.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:id="@+id/settings_group">
<item
android:id="@+id/settings"
android:icon="@drawable/gear"
android:title="@string/tab_settings" />
</group>
<item
android:id="@+id/event_data"
android:icon="@drawable/calendar2_event"
android:title="@string/event_data">
<menu>
<item
android:id="@+id/export_pdf"
android:icon="@drawable/filetype_pdf"
android:title="@string/export_pdf" />
<item
android:id="@+id/export_csv"
android:icon="@drawable/filetype_csv"
android:title="@string/export_csv" />
<group android:id="@+id/event_backup">
<item
android:id="@+id/backup_events"
android:icon="@drawable/box_arrow_down"
android:title="@string/backup" />
<item
android:id="@+id/restore_events"
android:icon="@drawable/box_arrow_in_down"
android:title="@string/restore" />
</group>
<group android:id="@+id/clear">
<item
android:id="@+id/clear_events"
android:icon="@drawable/trash"
android:title="@string/clear_events" />
</group>
</menu>
</item>
<item
android:id="@+id/medicine_data"
android:icon="@drawable/capsule"
android:title="@string/medicine_data">
<menu>
<item
android:id="@+id/medicine_backup"
android:icon="@drawable/box_arrow_down"
android:title="@string/backup" />
<item
android:id="@+id/restore_medicine_backup"
android:icon="@drawable/box_arrow_in_down"
android:title="@string/restore" />
</menu>
</item>
<group android:id="@+id/debug">
<item
android:id="@+id/generate_test_data"
android:icon="@drawable/x_circle"
android:title="@string/generate_test_data" />
<item
android:id="@+id/show_app_intro"
android:title="@string/show_intro" />
</group>
<group android:id="@+id/information">
<item
android:id="@+id/version"
android:icon="@drawable/info_circle"
android:title="@string/app_version" />
<item
android:id="@+id/app_url"
android:icon="@drawable/link"
android:title="@string/app_url" />
</group>
</menu>