Migration to Androidx PreferenceCompat.

src/main/res/menu/list_context_menu.xml

@@ -13,30 +13,31 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/list_context_menu_share"
-        android:actionProviderClass="android.widget.ShareActionProvider"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_share" />
+        android:title="@string/menu_share"
+        app:actionProviderClass="androidx.appcompat.widget.ShareActionProvider"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/list_context_menu_show_on_map"
         android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_show_on_map" />
+        android:title="@string/menu_show_on_map"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/list_context_menu_edit"
         android:icon="@drawable/ic_edit_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_edit" />
+        android:title="@string/menu_edit"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/list_context_menu_delete"
         android:icon="@drawable/ic_delete_forever_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_delete" />
+        android:title="@string/menu_delete"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/list_context_menu_select_all"
         android:icon="@drawable/ic_select_all_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_select_all" />
+        android:title="@string/menu_select_all"
+        app:showAsAction="ifRoom" />
 </menu>

src/main/res/menu/marker_detail.xml

@@ -13,20 +13,21 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/marker_detail_show_on_map"
         android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_show_on_map" />
+        android:title="@string/menu_show_on_map"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/marker_detail_edit"
         android:icon="@drawable/ic_edit_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_edit" />
+        android:title="@string/menu_edit"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/marker_detail_delete"
         android:icon="@drawable/ic_delete_forever_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_delete" />
+        android:title="@string/menu_delete"
+        app:showAsAction="ifRoom" />
 </menu>

src/main/res/menu/marker_list.xml

@@ -13,15 +13,16 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/marker_list_insert_marker"
         android:icon="@drawable/ic_marker_show_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_insert_marker" />
+        android:title="@string/menu_insert_marker"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/marker_list_search"
-        android:actionViewClass="android.widget.SearchView"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_search" />
+        android:title="@string/menu_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="ifRoom" />
 </menu>

src/main/res/menu/track_detail.xml

@@ -13,29 +13,30 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/track_detail_insert_marker"
         android:icon="@drawable/ic_marker_add_24dp"
         android:orderInCategory="1"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
         android:title="@string/menu_insert_marker" />
     <item
         android:id="@+id/track_detail_insert_photo"
         android:icon="@drawable/ic_camera_24dp"
         android:orderInCategory="2"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
         android:title="@string/menu_insert_photo" />
     <item
         android:id="@+id/track_detail_menu_show_on_map"
         android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
         android:title="@string/menu_show_on_map" />
     <item
         android:id="@+id/track_detail_share"
-        android:actionProviderClass="android.widget.ShareActionProvider"
+        app:actionProviderClass="androidx.appcompat.widget.ShareActionProvider"
         android:orderInCategory="4"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
         android:title="@string/menu_share" />
     <item
         android:id="@+id/track_detail_markers"

src/main/res/menu/track_list.xml

@@ -13,23 +13,24 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/track_list_search"
-        android:actionViewClass="android.widget.SearchView"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_search" />
+        android:title="@string/menu_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="ifRoom" />
     <!-- Icon and title is overwritten by TrackListActivity -->
     <item
         android:id="@+id/track_list_start_gps"
         android:icon="@drawable/ic_gps_off_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_start_gps" />
+        android:title="@string/menu_start_gps"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/track_list_markers"
         android:icon="@drawable/ic_marker_show_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_markers" />
+        android:title="@string/menu_markers"
+        app:showAsAction="ifRoom" />
     <item
         android:id="@+id/track_list_aggregated_statistics"
         android:icon="@drawable/ic_statistics_24dp"