diff --git a/AndroidManifest.xml b/AndroidManifest.xml
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -241,7 +241,7 @@
         </activity>
 
         <provider
-            android:name="android.support.v4.content.FileProvider"
+            android:name="androidx.core.content.FileProvider"
             android:authorities="org.kde.kdeconnect_tp.fileprovider"
             android:exported="false"
             android:grantUriPermissions="true">
diff --git a/build.gradle b/build.gradle
--- a/build.gradle
+++ b/build.gradle
@@ -1,3 +1,5 @@
+apply plugin: 'com.android.application'
+
 buildscript {
     repositories {
         jcenter()
@@ -8,8 +10,6 @@
     }
 }
 
-apply plugin: 'com.android.application'
-
 android {
     compileSdkVersion 28
     defaultConfig {
@@ -69,19 +69,19 @@
         google()
     }
 
-    implementation 'com.android.support:support-media-compat:28.0.0'
-    implementation 'com.android.support:appcompat-v7:28.0.0'
-    implementation 'com.android.support:preference-v7:28.0.0'
-    implementation 'com.android.support:design:28.0.0'
+    implementation 'androidx.media:media:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.preference:preference:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
     implementation 'com.jakewharton:disklrucache:2.0.2' //For caching album art bitmaps
 
     implementation 'org.apache.sshd:sshd-core:0.14.0'
     implementation 'org.apache.mina:mina-core:2.0.19' //For some reason, makes sshd-core:0.14.0 work without NIO, which isn't available until Android 8+
 
     implementation 'com.madgag.spongycastle:bcpkix-jdk15on:1.58.0.0' //For SSL certificate generation
 
-    implementation 'com.jakewharton:butterknife:9.0.0-rc2'
-    annotationProcessor 'com.jakewharton:butterknife-compiler:9.0.0-rc2'
+    implementation 'com.jakewharton:butterknife:9.0.0-rc3'
+    annotationProcessor 'com.jakewharton:butterknife-compiler:9.0.0-rc3'
 
     // Testing
     androidTestImplementation 'org.mockito:mockito-core:1.10.19'
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,2 @@
+android.enableJetifier=true
+android.useAndroidX=true
\ No newline at end of file
diff --git a/res/layout/activity_device.xml b/res/layout/activity_device.xml
--- a/res/layout/activity_device.xml
+++ b/res/layout/activity_device.xml
@@ -78,7 +78,7 @@
         android:padding="16dp"
         android:visibility="gone">
 
-        <android.support.v7.widget.AppCompatImageView
+        <androidx.appcompat.widget.AppCompatImageView
             android:id="@+id/error_message_icon"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
diff --git a/res/layout/activity_main.xml b/res/layout/activity_main.xml
--- a/res/layout/activity_main.xml
+++ b/res/layout/activity_main.xml
@@ -1,43 +1,43 @@
-<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">  <!-- fitSystemWindows to make the drawer slide below the Lollipop transparent status bar -->
+<androidx.drawerlayout.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">  <!-- fitSystemWindows to make the drawer slide below the Lollipop transparent status bar -->
 
-    <android.support.design.widget.CoordinatorLayout
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
         android:id="@+id/coordinatorLayout"
         android:layout_height="match_parent"
         android:layout_width="match_parent"
         tools:context="org.kde.kdeconnect.UserInterface.MainActivity">
 
-        <android.support.design.widget.AppBarLayout
+        <com.google.android.material.appbar.AppBarLayout
             android:layout_height="wrap_content"
             android:layout_width="match_parent"
             android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
 
-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                 android:id="@+id/toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
                 android:elevation="8dp"/>
-        </android.support.design.widget.AppBarLayout>
+        </com.google.android.material.appbar.AppBarLayout>
 
         <FrameLayout
             android:id="@+id/container"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
 
-    </android.support.design.widget.CoordinatorLayout>
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
 
-    <android.support.design.widget.NavigationView
+    <com.google.android.material.navigation.NavigationView
         android:id="@+id/navigation_drawer"
         android:layout_width="wrap_content"
         android:layout_height="match_parent"
         android:layout_gravity="start"
         app:headerLayout="@layout/nav_header"
         style="?attr/mainNavigationViewStyle" />
 
-</android.support.v4.widget.DrawerLayout>
+</androidx.drawerlayout.widget.DrawerLayout>
diff --git a/res/layout/activity_runcommand.xml b/res/layout/activity_runcommand.xml
--- a/res/layout/activity_runcommand.xml
+++ b/res/layout/activity_runcommand.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                                                     xmlns:app="http://schemas.android.com/apk/res-auto"
+                                                     android:layout_width="match_parent"
+                                                     android:layout_height="match_parent">
 
     <ListView
         android:id="@+id/runcommandslist"
@@ -12,7 +12,7 @@
         android:addStatesFromChildren="true"
         android:orientation="vertical" />
 
-    <android.support.design.widget.FloatingActionButton
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/add_command_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
@@ -33,4 +33,4 @@
         android:textAlignment="center"
         android:textSize="16sp" />
 
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/res/layout/devices_list.xml b/res/layout/devices_list.xml
--- a/res/layout/devices_list.xml
+++ b/res/layout/devices_list.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/refresh_list_layout"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
+<androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                                                       xmlns:tools="http://schemas.android.com/tools"
+                                                       android:id="@+id/refresh_list_layout"
+                                                       android:layout_width="match_parent"
+                                                       android:layout_height="match_parent">
 
     <ListView
         android:id="@+id/devices_list"
@@ -17,4 +17,4 @@
         android:paddingRight="16dip"
         tools:context=".MainActivity" />
 
-</android.support.v4.widget.SwipeRefreshLayout>
\ No newline at end of file
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
\ No newline at end of file
diff --git a/res/layout/list_item_with_icon_entry.xml b/res/layout/list_item_with_icon_entry.xml
--- a/res/layout/list_item_with_icon_entry.xml
+++ b/res/layout/list_item_with_icon_entry.xml
@@ -13,7 +13,7 @@
     android:paddingLeft="16dp"
     android:paddingRight="16dp">
 
-        <android.support.v7.widget.AppCompatImageView
+        <androidx.appcompat.widget.AppCompatImageView
             android:id="@+id/list_item_entry_icon"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
diff --git a/res/layout/mpris_control.xml b/res/layout/mpris_control.xml
--- a/res/layout/mpris_control.xml
+++ b/res/layout/mpris_control.xml
@@ -147,7 +147,7 @@
         android:layout_marginTop="8dip"
         android:orientation="horizontal">
 
-        <android.support.v7.widget.AppCompatImageView
+        <androidx.appcompat.widget.AppCompatImageView
             android:id="@+id/imageView"
             android:layout_width="30dip"
             android:layout_height="30dip"
diff --git a/res/layout/nav_dark_mode_switch.xml b/res/layout/nav_dark_mode_switch.xml
--- a/res/layout/nav_dark_mode_switch.xml
+++ b/res/layout/nav_dark_mode_switch.xml
@@ -1,4 +1,4 @@
-<android.support.v7.widget.SwitchCompat
+<androidx.appcompat.widget.SwitchCompat
     android:id="@+id/dark_theme"
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
diff --git a/res/layout/preference_with_button.xml b/res/layout/preference_with_button.xml
--- a/res/layout/preference_with_button.xml
+++ b/res/layout/preference_with_button.xml
@@ -70,7 +70,7 @@
 
     </RelativeLayout>
 
-    <android.support.v7.widget.AppCompatImageButton
+    <androidx.appcompat.widget.AppCompatImageButton
         android:id="@+id/settingsButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
diff --git a/src/org/kde/kdeconnect/BackgroundService.java b/src/org/kde/kdeconnect/BackgroundService.java
--- a/src/org/kde/kdeconnect/BackgroundService.java
+++ b/src/org/kde/kdeconnect/BackgroundService.java
@@ -32,7 +32,6 @@
 import android.os.Binder;
 import android.os.Build;
 import android.os.IBinder;
-import android.support.v4.app.NotificationCompat;
 import android.text.TextUtils;
 import android.util.Log;
 
@@ -53,6 +52,8 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 
+import androidx.core.app.NotificationCompat;
+
 //import org.kde.kdeconnect.Backends.BluetoothBackend.BluetoothLinkProvider;
 
 public class BackgroundService extends Service {
diff --git a/src/org/kde/kdeconnect/Device.java b/src/org/kde/kdeconnect/Device.java
--- a/src/org/kde/kdeconnect/Device.java
+++ b/src/org/kde/kdeconnect/Device.java
@@ -30,8 +30,6 @@
 import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.preference.PreferenceManager;
-import android.support.v4.app.NotificationCompat;
-import android.support.v4.content.ContextCompat;
 import android.util.Base64;
 import android.util.Log;
 
@@ -61,6 +59,9 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 
+import androidx.core.app.NotificationCompat;
+import androidx.core.content.ContextCompat;
+
 public class Device implements BaseLink.PacketReceiver {
 
     private final Context context;
diff --git a/src/org/kde/kdeconnect/Helpers/ContactsHelper.java b/src/org/kde/kdeconnect/Helpers/ContactsHelper.java
--- a/src/org/kde/kdeconnect/Helpers/ContactsHelper.java
+++ b/src/org/kde/kdeconnect/Helpers/ContactsHelper.java
@@ -28,8 +28,6 @@
 import android.os.Build;
 import android.provider.ContactsContract;
 import android.provider.ContactsContract.PhoneLookup;
-import android.support.annotation.RequiresApi;
-import android.support.v4.util.LongSparseArray;
 import android.util.Base64;
 import android.util.Base64OutputStream;
 import android.util.Log;
@@ -48,6 +46,9 @@
 import java.util.Map;
 import java.util.Set;
 
+import androidx.annotation.RequiresApi;
+import androidx.collection.LongSparseArray;
+
 public class ContactsHelper {
 
 
diff --git a/src/org/kde/kdeconnect/Helpers/SMSHelper.java b/src/org/kde/kdeconnect/Helpers/SMSHelper.java
--- a/src/org/kde/kdeconnect/Helpers/SMSHelper.java
+++ b/src/org/kde/kdeconnect/Helpers/SMSHelper.java
@@ -27,7 +27,6 @@
 import android.os.Build;
 import android.os.Looper;
 import android.provider.Telephony;
-import android.support.annotation.RequiresApi;
 import android.util.Log;
 
 import org.json.JSONException;
@@ -41,6 +40,8 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 
+import androidx.annotation.RequiresApi;
+
 public class SMSHelper {
 
     /**
diff --git a/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java b/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
--- a/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
@@ -25,7 +25,6 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AppCompatActivity;
 import android.view.GestureDetector;
 import android.view.HapticFeedbackConstants;
 import android.view.Menu;
@@ -39,6 +38,8 @@
 import org.kde.kdeconnect.UserInterface.ThemeUtil;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class MousePadActivity extends AppCompatActivity implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, MousePadGestureDetector.OnGestureListener {
     private String deviceId;
 
diff --git a/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadPlugin.java b/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadPlugin.java
@@ -23,12 +23,13 @@
 import android.app.Activity;
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
-import android.support.v4.content.ContextCompat;
 
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect.Plugins.Plugin;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.core.content.ContextCompat;
+
 public class MousePadPlugin extends Plugin {
 
     //public final static String PACKET_TYPE_MOUSEPAD = "kdeconnect.mousepad";
diff --git a/src/org/kde/kdeconnect/Plugins/MprisPlugin/AlbumArtCache.java b/src/org/kde/kdeconnect/Plugins/MprisPlugin/AlbumArtCache.java
--- a/src/org/kde/kdeconnect/Plugins/MprisPlugin/AlbumArtCache.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisPlugin/AlbumArtCache.java
@@ -28,7 +28,6 @@
 import android.net.ConnectivityManager;
 import android.os.AsyncTask;
 import android.os.Build;
-import android.support.v4.util.LruCache;
 import android.util.Log;
 
 import com.jakewharton.disklrucache.DiskLruCache;
@@ -47,6 +46,8 @@
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 
+import androidx.collection.LruCache;
+
 /**
  * Handles the cache for album art
  */
diff --git a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisActivity.java b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisActivity.java
--- a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisActivity.java
@@ -27,10 +27,6 @@
 import android.os.Handler;
 import android.os.Message;
 import android.preference.PreferenceManager;
-import android.support.annotation.NonNull;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.graphics.drawable.DrawableCompat;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.View;
@@ -46,13 +42,18 @@
 import org.kde.kdeconnect.Backends.BaseLinkProvider;
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
-import org.kde.kdeconnect.Plugins.SystemvolumePlugin.SystemvolumeFragment;
 import org.kde.kdeconnect.NetworkPacket;
+import org.kde.kdeconnect.Plugins.SystemvolumePlugin.SystemvolumeFragment;
 import org.kde.kdeconnect.UserInterface.ThemeUtil;
 import org.kde.kdeconnect_tp.R;
 
 import java.util.List;
 
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.drawable.DrawableCompat;
+import androidx.fragment.app.FragmentManager;
+
 public class MprisActivity extends AppCompatActivity {
 
     private String deviceId;
diff --git a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisMediaSession.java b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisMediaSession.java
--- a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisMediaSession.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisMediaSession.java
@@ -30,20 +30,21 @@
 import android.os.Looper;
 import android.os.Message;
 import android.preference.PreferenceManager;
-import android.support.v4.app.NotificationCompat;
-import android.support.v4.app.TaskStackBuilder;
 import android.support.v4.media.MediaMetadataCompat;
 import android.support.v4.media.session.MediaSessionCompat;
 import android.support.v4.media.session.PlaybackStateCompat;
-import android.support.v4.media.app.NotificationCompat.MediaStyle;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.Helpers.NotificationHelper;
 import org.kde.kdeconnect_tp.R;
 
 import java.util.HashSet;
 
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.TaskStackBuilder;
+import androidx.media.app.NotificationCompat.MediaStyle;
+
 /**
  * Controls the mpris media control notification
  * <p>
@@ -319,7 +320,7 @@
                     .setSmallIcon(R.drawable.ic_play_white)
                     .setShowWhen(false)
                     .setColor(service.getResources().getColor(R.color.primary))
-                    .setVisibility(android.support.v4.app.NotificationCompat.VISIBILITY_PUBLIC);
+                    .setVisibility(androidx.core.app.NotificationCompat.VISIBILITY_PUBLIC);
 
             if (!notificationPlayer.getTitle().isEmpty()) {
                 notification.setContentTitle(notificationPlayer.getTitle());
diff --git a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisPlugin.java b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisPlugin.java
@@ -26,7 +26,6 @@
 import android.graphics.drawable.Drawable;
 import android.os.Handler;
 import android.os.Message;
-import android.support.v4.content.ContextCompat;
 import android.util.Log;
 
 import org.kde.kdeconnect.NetworkPacket;
@@ -41,6 +40,8 @@
 import java.util.Iterator;
 import java.util.List;
 
+import androidx.core.content.ContextCompat;
+
 public class MprisPlugin extends Plugin {
     public class MprisPlayer {
         private String player = "";
diff --git a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverCallback.java b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverCallback.java
--- a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverCallback.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverCallback.java
@@ -24,9 +24,10 @@
 import android.media.session.MediaController;
 import android.media.session.PlaybackState;
 import android.os.Build;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.annotation.RequiresApi;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 
 
 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
diff --git a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlayer.java b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlayer.java
--- a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlayer.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlayer.java
@@ -24,7 +24,8 @@
 import android.media.session.MediaController;
 import android.media.session.PlaybackState;
 import android.os.Build;
-import android.support.annotation.RequiresApi;
+
+import androidx.annotation.RequiresApi;
 
 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
 class MprisReceiverPlayer {
diff --git a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlugin.java b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverPlugin.java
@@ -31,8 +31,6 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.Settings;
-import android.support.annotation.Nullable;
-import android.support.annotation.RequiresApi;
 import android.util.Log;
 
 import org.kde.kdeconnect.Helpers.AppsHelper;
@@ -45,6 +43,9 @@
 import java.util.HashMap;
 import java.util.List;
 
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+
 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
 public class MprisReceiverPlugin extends Plugin implements MediaSessionManager.OnActiveSessionsChangedListener {
 
diff --git a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationFilterActivity.java b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationFilterActivity.java
--- a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationFilterActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationFilterActivity.java
@@ -30,7 +30,6 @@
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -41,13 +40,14 @@
 import android.widget.ListView;
 
 import org.kde.kdeconnect.BackgroundService;
-import org.kde.kdeconnect.Helpers.StringsHelper;
 import org.kde.kdeconnect.UserInterface.ThemeUtil;
 import org.kde.kdeconnect_tp.R;
 
 import java.util.Arrays;
 import java.util.List;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class NotificationFilterActivity extends AppCompatActivity {
 
     private AppDatabase appDatabase;
diff --git a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationReceiver.java b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationReceiver.java
--- a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationReceiver.java
+++ b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationReceiver.java
@@ -26,12 +26,13 @@
 import android.os.Build;
 import android.service.notification.NotificationListenerService;
 import android.service.notification.StatusBarNotification;
-import android.support.annotation.RequiresApi;
 
 import java.util.ArrayList;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 
+import androidx.annotation.RequiresApi;
+
 @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
 public class NotificationReceiver extends NotificationListenerService {
 
diff --git a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationsPlugin.java b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationsPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationsPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/NotificationsPlugin/NotificationsPlugin.java
@@ -38,8 +38,6 @@
 import android.os.Bundle;
 import android.provider.Settings;
 import android.service.notification.StatusBarNotification;
-import android.support.annotation.RequiresApi;
-import android.support.v4.app.NotificationCompat;
 import android.text.SpannableString;
 import android.util.Log;
 
@@ -59,6 +57,9 @@
 import java.util.Map;
 import java.util.Set;
 
+import androidx.annotation.RequiresApi;
+import androidx.core.app.NotificationCompat;
+
 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
 public class NotificationsPlugin extends Plugin implements NotificationReceiver.NotificationListener {
 
diff --git a/src/org/kde/kdeconnect/Plugins/PingPlugin/PingPlugin.java b/src/org/kde/kdeconnect/Plugins/PingPlugin/PingPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/PingPlugin/PingPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/PingPlugin/PingPlugin.java
@@ -26,15 +26,16 @@
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
-import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 
 import org.kde.kdeconnect.Helpers.NotificationHelper;
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect.Plugins.Plugin;
 import org.kde.kdeconnect.UserInterface.MainActivity;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.core.app.NotificationCompat;
+
 
 public class PingPlugin extends Plugin {
 
diff --git a/src/org/kde/kdeconnect/Plugins/Plugin.java b/src/org/kde/kdeconnect/Plugins/Plugin.java
--- a/src/org/kde/kdeconnect/Plugins/Plugin.java
+++ b/src/org/kde/kdeconnect/Plugins/Plugin.java
@@ -27,17 +27,18 @@
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
-import android.support.annotation.StringRes;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
 import android.widget.Button;
 
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect.UserInterface.DeviceSettingsActivity;
 import org.kde.kdeconnect.UserInterface.PluginSettingsActivity;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.annotation.StringRes;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
 public abstract class Plugin {
 
     protected Device device;
diff --git a/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterActivity.java b/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterActivity.java
--- a/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterActivity.java
@@ -24,18 +24,19 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.os.PowerManager;
-import android.support.v4.media.VolumeProviderCompat;
 import android.support.v4.media.session.MediaSessionCompat;
 import android.support.v4.media.session.PlaybackStateCompat;
-import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.UserInterface.ThemeUtil;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.media.VolumeProviderCompat;
+
 public class PresenterActivity extends AppCompatActivity {
 
     private MediaSessionCompat mMediaSession;
diff --git a/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterPlugin.java b/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/PresenterPlugin/PresenterPlugin.java
@@ -24,13 +24,14 @@
 import android.app.Activity;
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
-import android.support.v4.content.ContextCompat;
 import android.view.KeyEvent;
 
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect.Plugins.Plugin;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.core.content.ContextCompat;
+
 import static org.kde.kdeconnect.Plugins.MousePadPlugin.KeyListenerView.SpecialKeysMap;
 
 public class PresenterPlugin extends Plugin {
diff --git a/src/org/kde/kdeconnect/Plugins/ReceiveNotificationsPlugin/ReceiveNotificationsPlugin.java b/src/org/kde/kdeconnect/Plugins/ReceiveNotificationsPlugin/ReceiveNotificationsPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/ReceiveNotificationsPlugin/ReceiveNotificationsPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/ReceiveNotificationsPlugin/ReceiveNotificationsPlugin.java
@@ -27,7 +27,6 @@
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 
 import org.kde.kdeconnect.Helpers.NotificationHelper;
@@ -38,6 +37,8 @@
 
 import java.io.InputStream;
 
+import androidx.core.app.NotificationCompat;
+
 public class ReceiveNotificationsPlugin extends Plugin {
 
     private final static String PACKET_TYPE_NOTIFICATION = "kdeconnect.notification";
diff --git a/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardPlugin.java b/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/RemoteKeyboardPlugin/RemoteKeyboardPlugin.java
@@ -23,8 +23,6 @@
 import android.graphics.drawable.Drawable;
 import android.os.SystemClock;
 import android.preference.PreferenceManager;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.util.Pair;
 import android.util.Log;
 import android.util.SparseIntArray;
 import android.view.KeyEvent;
@@ -40,6 +38,9 @@
 import java.util.ArrayList;
 import java.util.concurrent.locks.ReentrantLock;
 
+import androidx.core.content.ContextCompat;
+import androidx.core.util.Pair;
+
 public class RemoteKeyboardPlugin extends Plugin {
 
     private final static String PACKET_TYPE_MOUSEPAD_REQUEST = "kdeconnect.mousepad.request";
diff --git a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandActivity.java b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandActivity.java
--- a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandActivity.java
@@ -25,10 +25,6 @@
 import android.content.Context;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.annotation.RequiresApi;
-import android.support.design.widget.FloatingActionButton;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.ContextMenu;
 import android.view.MenuInflater;
@@ -39,6 +35,8 @@
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
 import org.json.JSONException;
 import org.json.JSONObject;
 import org.kde.kdeconnect.BackgroundService;
@@ -50,6 +48,10 @@
 import java.util.ArrayList;
 import java.util.Collections;
 
+import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+
 public class RunCommandActivity extends AppCompatActivity {
 
     private String deviceId;
diff --git a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandPlugin.java b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandPlugin.java
@@ -24,7 +24,6 @@
 import android.app.Activity;
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
-import android.support.v4.content.ContextCompat;
 
 import org.json.JSONException;
 import org.json.JSONObject;
@@ -36,6 +35,8 @@
 import java.util.Collections;
 import java.util.Iterator;
 
+import androidx.core.content.ContextCompat;
+
 public class RunCommandPlugin extends Plugin {
 
     private final static String PACKET_TYPE_RUNCOMMAND = "kdeconnect.runcommand";
diff --git a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandUrlActivity.java b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandUrlActivity.java
--- a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandUrlActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandUrlActivity.java
@@ -3,16 +3,17 @@
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Vibrator;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.Gravity;
 import android.widget.TextView;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
 public class RunCommandUrlActivity extends AppCompatActivity {
 
     @Override
diff --git a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandWidgetDeviceSelector.java b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandWidgetDeviceSelector.java
--- a/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandWidgetDeviceSelector.java
+++ b/src/org/kde/kdeconnect/Plugins/RunCommandPlugin/RunCommandWidgetDeviceSelector.java
@@ -2,7 +2,6 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.view.Window;
 import android.widget.ListView;
 
@@ -14,6 +13,8 @@
 import java.util.ArrayList;
 import java.util.Collections;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class RunCommandWidgetDeviceSelector extends AppCompatActivity {
     @Override
     protected void onCreate(Bundle bundle) {
diff --git a/src/org/kde/kdeconnect/Plugins/SMSPlugin/SMSPlugin.java b/src/org/kde/kdeconnect/Plugins/SMSPlugin/SMSPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/SMSPlugin/SMSPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/SMSPlugin/SMSPlugin.java
@@ -32,7 +32,6 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.preference.PreferenceManager;
-import android.support.v4.content.ContextCompat;
 import android.telephony.PhoneNumberUtils;
 import android.telephony.SmsManager;
 import android.telephony.SmsMessage;
@@ -56,6 +55,8 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
 
+import androidx.core.content.ContextCompat;
+
 import static org.kde.kdeconnect.Plugins.TelephonyPlugin.TelephonyPlugin.PACKET_TYPE_TELEPHONY;
 
 public class SMSPlugin extends Plugin {
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/NotificationUpdateCallback.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/NotificationUpdateCallback.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/NotificationUpdateCallback.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/NotificationUpdateCallback.java
@@ -3,15 +3,16 @@
 import android.app.NotificationManager;
 import android.content.Context;
 import android.content.res.Resources;
-import android.support.v4.app.NotificationCompat;
 
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.Helpers.NotificationHelper;
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect_tp.R;
 
 import java.util.ArrayList;
 
+import androidx.core.app.NotificationCompat;
+
 class NotificationUpdateCallback extends Device.SendPacketStatusCallback {
 
     private final Resources res;
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/SendFileActivity.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/SendFileActivity.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/SendFileActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/SendFileActivity.java
@@ -26,7 +26,6 @@
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.widget.Toast;
 
@@ -36,6 +35,8 @@
 
 import java.util.ArrayList;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 
 public class SendFileActivity extends AppCompatActivity {
 
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareActivity.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareActivity.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareActivity.java
@@ -22,9 +22,6 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v4.widget.SwipeRefreshLayout;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -41,6 +38,10 @@
 import java.util.ArrayList;
 import java.util.Collection;
 
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+
 
 public class ShareActivity extends AppCompatActivity {
 
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareInfo.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareInfo.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareInfo.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareInfo.java
@@ -20,12 +20,12 @@
 
 package org.kde.kdeconnect.Plugins.SharePlugin;
 
-import android.support.v4.provider.DocumentFile;
-
 import org.kde.kdeconnect.NetworkPacket;
 
 import java.io.OutputStream;
 
+import androidx.documentfile.provider.DocumentFile;
+
 class ShareInfo {
     String fileName;
     long fileSize;
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareNotification.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareNotification.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareNotification.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareNotification.java
@@ -31,8 +31,6 @@
 import android.net.Uri;
 import android.os.Build;
 import android.preference.PreferenceManager;
-import android.support.v4.app.NotificationCompat;
-import android.support.v4.content.FileProvider;
 
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.Helpers.NotificationHelper;
@@ -42,6 +40,9 @@
 import java.io.IOException;
 import java.io.InputStream;
 
+import androidx.core.app.NotificationCompat;
+import androidx.core.content.FileProvider;
+
 //TODO: Starting API 24 notification title and text are both displayed on 1 line above the progress bar. Because title can be long, the text is often not displayed
 class ShareNotification {
     private final NotificationManager notificationManager;
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/SharePlugin.java
@@ -39,11 +39,6 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.MediaStore;
-import android.support.annotation.WorkerThread;
-import android.support.v4.app.NotificationCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.content.FileProvider;
-import android.support.v4.provider.DocumentFile;
 import android.util.Log;
 import android.widget.Toast;
 
@@ -64,6 +59,12 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+import androidx.annotation.WorkerThread;
+import androidx.core.app.NotificationCompat;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
+import androidx.documentfile.provider.DocumentFile;
+
 public class SharePlugin extends Plugin implements ReceiveFileRunnable.CallBack {
 
     private final static String PACKET_TYPE_SHARE_REQUEST = "kdeconnect.share.request";
diff --git a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareSettingsActivity.java b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareSettingsActivity.java
--- a/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareSettingsActivity.java
+++ b/src/org/kde/kdeconnect/Plugins/SharePlugin/ShareSettingsActivity.java
@@ -12,13 +12,14 @@
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
 import android.preference.PreferenceManager;
-import android.support.v4.provider.DocumentFile;
 import android.util.Log;
 
 import org.kde.kdeconnect.UserInterface.PluginSettingsActivity;
 
 import java.io.File;
 
+import androidx.documentfile.provider.DocumentFile;
+
 public class ShareSettingsActivity extends PluginSettingsActivity {
 
     private final static String PREFERENCE_CUSTOMIZE_DESTINATION = "share_destination_custom";
diff --git a/src/org/kde/kdeconnect/Plugins/SystemvolumePlugin/SystemvolumeFragment.java b/src/org/kde/kdeconnect/Plugins/SystemvolumePlugin/SystemvolumeFragment.java
--- a/src/org/kde/kdeconnect/Plugins/SystemvolumePlugin/SystemvolumeFragment.java
+++ b/src/org/kde/kdeconnect/Plugins/SystemvolumePlugin/SystemvolumeFragment.java
@@ -23,9 +23,6 @@
 import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v4.app.ListFragment;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
@@ -36,6 +33,10 @@
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.ListFragment;
+
 public class SystemvolumeFragment extends ListFragment implements Sink.UpdateListener, SystemvolumePlugin.SinkListener {
 
     private SystemvolumePlugin plugin;
diff --git a/src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java b/src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
--- a/src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
+++ b/src/org/kde/kdeconnect/Plugins/TelephonyPlugin/TelephonyPlugin.java
@@ -30,7 +30,6 @@
 import android.media.AudioManager;
 import android.os.Build;
 import android.preference.PreferenceManager;
-import android.support.v4.content.ContextCompat;
 import android.telephony.PhoneNumberUtils;
 import android.telephony.TelephonyManager;
 import android.util.Log;
@@ -44,6 +43,8 @@
 import java.util.Timer;
 import java.util.TimerTask;
 
+import androidx.core.content.ContextCompat;
+
 public class TelephonyPlugin extends Plugin {
 
 
diff --git a/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java b/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java
--- a/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java
+++ b/src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java
@@ -18,18 +18,19 @@
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.PreferenceActivity;
-import android.support.annotation.LayoutRes;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatDelegate;
-import android.support.v7.widget.Toolbar;
 import android.view.MenuInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import org.kde.kdeconnect.BackgroundService;
 
+import androidx.annotation.LayoutRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.appcompat.widget.Toolbar;
+
 /**
  * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
  * to be used with AppCompat.
diff --git a/src/org/kde/kdeconnect/UserInterface/CustomDevicesActivity.java b/src/org/kde/kdeconnect/UserInterface/CustomDevicesActivity.java
--- a/src/org/kde/kdeconnect/UserInterface/CustomDevicesActivity.java
+++ b/src/org/kde/kdeconnect/UserInterface/CustomDevicesActivity.java
@@ -26,7 +26,6 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AppCompatActivity;
 import android.text.TextUtils;
 import android.view.View;
 import android.view.inputmethod.EditorInfo;
@@ -42,6 +41,8 @@
 import java.util.ArrayList;
 import java.util.Collections;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 public class CustomDevicesActivity extends AppCompatActivity {
 
     public static final String KEY_CUSTOM_DEVLIST_PREFERENCE = "device_list_preference";
diff --git a/src/org/kde/kdeconnect/UserInterface/DeviceFragment.java b/src/org/kde/kdeconnect/UserInterface/DeviceFragment.java
--- a/src/org/kde/kdeconnect/UserInterface/DeviceFragment.java
+++ b/src/org/kde/kdeconnect/UserInterface/DeviceFragment.java
@@ -25,7 +25,6 @@
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
@@ -54,6 +53,8 @@
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
+import androidx.fragment.app.Fragment;
+
 
 /**
  * Main view. Displays the current device and its plugins
diff --git a/src/org/kde/kdeconnect/UserInterface/List/SmallEntryItem.java b/src/org/kde/kdeconnect/UserInterface/List/SmallEntryItem.java
--- a/src/org/kde/kdeconnect/UserInterface/List/SmallEntryItem.java
+++ b/src/org/kde/kdeconnect/UserInterface/List/SmallEntryItem.java
@@ -20,13 +20,14 @@
 
 package org.kde.kdeconnect.UserInterface.List;
 
-import android.support.v4.content.ContextCompat;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.TextView;
 
 import org.kde.kdeconnect_tp.R;
 
+import androidx.core.content.ContextCompat;
+
 public class SmallEntryItem implements ListAdapter.Item {
 
     private final String title;
diff --git a/src/org/kde/kdeconnect/UserInterface/MainActivity.java b/src/org/kde/kdeconnect/UserInterface/MainActivity.java
--- a/src/org/kde/kdeconnect/UserInterface/MainActivity.java
+++ b/src/org/kde/kdeconnect/UserInterface/MainActivity.java
@@ -7,14 +7,6 @@
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
-import android.support.design.widget.NavigationView;
-import android.support.v4.app.Fragment;
-import android.support.v4.view.GravityCompat;
-import android.support.v4.widget.DrawerLayout;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarDrawerToggle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
@@ -24,6 +16,8 @@
 import android.widget.EditText;
 import android.widget.TextView;
 
+import com.google.android.material.navigation.NavigationView;
+
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.Helpers.DeviceHelper;
@@ -34,6 +28,13 @@
 import java.util.HashSet;
 import java.util.Set;
 
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.ActionBarDrawerToggle;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.view.GravityCompat;
+import androidx.drawerlayout.widget.DrawerLayout;
+import androidx.fragment.app.Fragment;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 
diff --git a/src/org/kde/kdeconnect/UserInterface/PairingFragment.java b/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
--- a/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
+++ b/src/org/kde/kdeconnect/UserInterface/PairingFragment.java
@@ -25,8 +25,6 @@
 import android.content.Intent;
 import android.content.res.Resources;
 import android.os.Bundle;
-import android.support.v4.widget.SwipeRefreshLayout;
-import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -47,6 +45,9 @@
 import java.util.ArrayList;
 import java.util.Collection;
 
+import androidx.fragment.app.Fragment;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+
 
 /**
  * The view that the user will see when there are no devices paired, or when you choose "add a new device" from the sidebar.
diff --git a/src/org/kde/kdeconnect/UserInterface/SettingsFragment.java b/src/org/kde/kdeconnect/UserInterface/SettingsFragment.java
--- a/src/org/kde/kdeconnect/UserInterface/SettingsFragment.java
+++ b/src/org/kde/kdeconnect/UserInterface/SettingsFragment.java
@@ -5,17 +5,18 @@
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.v7.preference.Preference;
-import android.support.v7.preference.PreferenceFragmentCompat;
-import android.support.v7.preference.PreferenceScreen;
-import android.support.v7.preference.SwitchPreferenceCompat;
-import android.support.v7.preference.TwoStatePreference;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Helpers.DeviceHelper;
 import org.kde.kdeconnect.Helpers.NotificationHelper;
 import org.kde.kdeconnect_tp.R;
 
+import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreferenceCompat;
+import androidx.preference.TwoStatePreference;
+
 public class SettingsFragment extends PreferenceFragmentCompat implements MainActivity.NameChangeCallback {
 
     private MainActivity mainActivity;