diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index eb777abc..f6fe2a95 100644
Binary files a/.idea/caches/build_file_checksums.ser and b/.idea/caches/build_file_checksums.ser differ
diff --git a/.idea/caches/gradle_models.ser b/.idea/caches/gradle_models.ser
index 94197bf8..22d52437 100644
Binary files a/.idea/caches/gradle_models.ser and b/.idea/caches/gradle_models.ser differ
diff --git a/app/build.gradle b/app/build.gradle
index 68bc8dc7..c7388dd5 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,7 +8,7 @@ android {
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -33,30 +33,30 @@ repositories {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'com.android.support:appcompat-v7:28.0.0'
-    implementation 'com.android.support:design:28.0.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
-    implementation 'com.android.support:support-v4:28.0.0'
+    implementation 'androidx.appcompat:appcompat:1.1.0-alpha02'
+    implementation 'com.google.android.material:material:1.1.0-alpha03'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'androidx.test:runner:1.1.2-alpha01'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.2-alpha01'
     implementation 'com.android.volley:volley:1.1.0'
     implementation 'de.hdodenhof:circleimageview:2.2.0'
     implementation 'com.google.android.exoplayer:exoplayer:2.7.0'
     implementation 'com.google.android.exoplayer:exoplayer-dash:2.7.0'
-    implementation 'com.android.support:customtabs:28.0.0'
+    implementation 'androidx.browser:browser:1.0.0'
     implementation 'com.alexvasilkov:gesture-views:2.5.2'
-    implementation 'com.android.support:cardview-v7:28.0.0'
+    implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'com.github.bumptech.glide:glide:4.8.0'
     implementation 'com.github.pwittchen:swipe-rx2:0.3.0'
     annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'
     // Room components
-    implementation "android.arch.persistence.room:runtime:$rootProject.roomVersion"
-    annotationProcessor "android.arch.persistence.room:compiler:$rootProject.roomVersion"
-    androidTestImplementation "android.arch.persistence.room:testing:$rootProject.roomVersion"
+    implementation "androidx.room:room-runtime:$rootProject.roomVersion"
+    annotationProcessor "androidx.room:room-compiler:$rootProject.roomVersion"
+    androidTestImplementation "androidx.room:room-testing:$rootProject.roomVersion"
     // Lifecycle components
-    implementation "android.arch.lifecycle:extensions:$rootProject.archLifecycleVersion"
-    annotationProcessor "android.arch.lifecycle:compiler:$rootProject.archLifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-extensions:$rootProject.archLifecycleVersion"
+    annotationProcessor "androidx.lifecycle:lifecycle-compiler:$rootProject.archLifecycleVersion"
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
     implementation 'io.reactivex.rxjava2:rxjava:2.2.0'
     implementation 'com.squareup.retrofit2:retrofit:2.5.0'
@@ -65,10 +65,10 @@ dependencies {
     implementation 'com.muditsen.multilevelrecyclerview:multilevelview:1.0.0'
     implementation 'com.google.dagger:dagger:2.17'
     annotationProcessor 'com.google.dagger:dagger-compiler:2.17'
-    implementation 'com.jakewharton:butterknife:8.8.1'
-    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
+    implementation 'com.jakewharton:butterknife:10.1.0'
+    annotationProcessor 'com.jakewharton:butterknife-compiler:10.1.0'
     implementation 'com.github.santalu:aspect-ratio-imageview:1.0.6'
-    implementation "android.arch.paging:runtime:1.0.1"
+    implementation 'androidx.paging:paging-runtime:2.1.0'
     implementation "com.lsjwzh:materialloadingprogressbar:0.5.8-RELEASE"
     implementation "ru.noties:markwon:2.0.1"
     implementation "ru.noties:markwon-syntax-highlight:2.0.1"
diff --git a/app/src/androidTest/java/ml/docilealligator/infinityforreddit/ExampleInstrumentedTest.java b/app/src/androidTest/java/ml/docilealligator/infinityforreddit/ExampleInstrumentedTest.java
index fd2873ec..c2ab8ce0 100644
--- a/app/src/androidTest/java/ml/docilealligator/infinityforreddit/ExampleInstrumentedTest.java
+++ b/app/src/androidTest/java/ml/docilealligator/infinityforreddit/ExampleInstrumentedTest.java
@@ -1,8 +1,8 @@
 package ml.docilealligator.infinityforreddit;
 
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
+import androidx.test.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/app/src/main/java/SubredditDatabase/SubredditDao.java b/app/src/main/java/SubredditDatabase/SubredditDao.java
index 657da989..b99b8baf 100644
--- a/app/src/main/java/SubredditDatabase/SubredditDao.java
+++ b/app/src/main/java/SubredditDatabase/SubredditDao.java
@@ -1,10 +1,10 @@
 package SubredditDatabase;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.persistence.room.Dao;
-import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.OnConflictStrategy;
-import android.arch.persistence.room.Query;
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
 
 @Dao
 public interface SubredditDao {
diff --git a/app/src/main/java/SubredditDatabase/SubredditData.java b/app/src/main/java/SubredditDatabase/SubredditData.java
index 973eda18..9af7204d 100644
--- a/app/src/main/java/SubredditDatabase/SubredditData.java
+++ b/app/src/main/java/SubredditDatabase/SubredditData.java
@@ -1,8 +1,8 @@
 package SubredditDatabase;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.support.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.annotation.NonNull;
 
 import SubscribedSubredditDatabase.SubscribedSubredditData;
 
diff --git a/app/src/main/java/SubredditDatabase/SubredditRepository.java b/app/src/main/java/SubredditDatabase/SubredditRepository.java
index 4e435da9..5e4cb7d7 100644
--- a/app/src/main/java/SubredditDatabase/SubredditRepository.java
+++ b/app/src/main/java/SubredditDatabase/SubredditRepository.java
@@ -1,7 +1,7 @@
 package SubredditDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.LiveData;
 import android.os.AsyncTask;
 
 public class SubredditRepository {
diff --git a/app/src/main/java/SubredditDatabase/SubredditRoomDatabase.java b/app/src/main/java/SubredditDatabase/SubredditRoomDatabase.java
index 764a3741..fa656b30 100644
--- a/app/src/main/java/SubredditDatabase/SubredditRoomDatabase.java
+++ b/app/src/main/java/SubredditDatabase/SubredditRoomDatabase.java
@@ -1,8 +1,8 @@
 package SubredditDatabase;
 
-import android.arch.persistence.room.Database;
-import android.arch.persistence.room.Room;
-import android.arch.persistence.room.RoomDatabase;
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
 import android.content.Context;
 
 @Database(entities = {SubredditData.class}, version = 1)
diff --git a/app/src/main/java/SubredditDatabase/SubredditViewModel.java b/app/src/main/java/SubredditDatabase/SubredditViewModel.java
index 19c2d726..a0dfa7c9 100644
--- a/app/src/main/java/SubredditDatabase/SubredditViewModel.java
+++ b/app/src/main/java/SubredditDatabase/SubredditViewModel.java
@@ -1,11 +1,11 @@
 package SubredditDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.AndroidViewModel;
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.ViewModel;
-import android.arch.lifecycle.ViewModelProvider;
-import android.support.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.annotation.NonNull;
 
 public class SubredditViewModel extends AndroidViewModel {
     private SubredditRepository mSubredditRepository;
diff --git a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditDao.java b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditDao.java
index 35ceac47..3a5aa9be 100644
--- a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditDao.java
+++ b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditDao.java
@@ -1,10 +1,10 @@
 package SubscribedSubredditDatabase;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.persistence.room.Dao;
-import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.OnConflictStrategy;
-import android.arch.persistence.room.Query;
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
 
 import java.util.List;
 
diff --git a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditData.java b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditData.java
index c6812768..4c6f1a49 100644
--- a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditData.java
+++ b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditData.java
@@ -1,9 +1,9 @@
 package SubscribedSubredditDatabase;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
-import android.support.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+import androidx.annotation.NonNull;
 
 @Entity(tableName = "subscribed_subreddits")
 public class SubscribedSubredditData {
diff --git a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRepository.java b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRepository.java
index 54b2ddfa..02bb7881 100644
--- a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRepository.java
+++ b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRepository.java
@@ -1,7 +1,7 @@
 package SubscribedSubredditDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.LiveData;
 import android.os.AsyncTask;
 
 import java.util.List;
diff --git a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRoomDatabase.java b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRoomDatabase.java
index abde79b4..48602fcc 100644
--- a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRoomDatabase.java
+++ b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditRoomDatabase.java
@@ -1,8 +1,8 @@
 package SubscribedSubredditDatabase;
 
-import android.arch.persistence.room.Database;
-import android.arch.persistence.room.Room;
-import android.arch.persistence.room.RoomDatabase;
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
 import android.content.Context;
 
 @Database(entities = {SubscribedSubredditData.class}, version = 1)
diff --git a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditViewModel.java b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditViewModel.java
index 8598dd55..9ed8ac93 100644
--- a/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditViewModel.java
+++ b/app/src/main/java/SubscribedSubredditDatabase/SubscribedSubredditViewModel.java
@@ -1,8 +1,8 @@
 package SubscribedSubredditDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.AndroidViewModel;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
 
 import java.util.List;
 
diff --git a/app/src/main/java/SubscribedUserDatabase/SubscribedUserDao.java b/app/src/main/java/SubscribedUserDatabase/SubscribedUserDao.java
index e1810eec..711b02a6 100644
--- a/app/src/main/java/SubscribedUserDatabase/SubscribedUserDao.java
+++ b/app/src/main/java/SubscribedUserDatabase/SubscribedUserDao.java
@@ -1,10 +1,10 @@
 package SubscribedUserDatabase;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.persistence.room.Dao;
-import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.OnConflictStrategy;
-import android.arch.persistence.room.Query;
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
 
 import java.util.List;
 
diff --git a/app/src/main/java/SubscribedUserDatabase/SubscribedUserData.java b/app/src/main/java/SubscribedUserDatabase/SubscribedUserData.java
index 41947efe..98c5a971 100644
--- a/app/src/main/java/SubscribedUserDatabase/SubscribedUserData.java
+++ b/app/src/main/java/SubscribedUserDatabase/SubscribedUserData.java
@@ -1,9 +1,9 @@
 package SubscribedUserDatabase;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.arch.persistence.room.PrimaryKey;
-import android.support.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+import androidx.annotation.NonNull;
 
 @Entity(tableName = "subscribed_users")
 public class SubscribedUserData {
diff --git a/app/src/main/java/SubscribedUserDatabase/SubscribedUserRepository.java b/app/src/main/java/SubscribedUserDatabase/SubscribedUserRepository.java
index 5cab5fa8..10549113 100644
--- a/app/src/main/java/SubscribedUserDatabase/SubscribedUserRepository.java
+++ b/app/src/main/java/SubscribedUserDatabase/SubscribedUserRepository.java
@@ -1,7 +1,7 @@
 package SubscribedUserDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.LiveData;
 import android.os.AsyncTask;
 
 import java.util.List;
diff --git a/app/src/main/java/SubscribedUserDatabase/SubscribedUserRoomDatabase.java b/app/src/main/java/SubscribedUserDatabase/SubscribedUserRoomDatabase.java
index cf3ea59d..12e6fb90 100644
--- a/app/src/main/java/SubscribedUserDatabase/SubscribedUserRoomDatabase.java
+++ b/app/src/main/java/SubscribedUserDatabase/SubscribedUserRoomDatabase.java
@@ -1,8 +1,8 @@
 package SubscribedUserDatabase;
 
-import android.arch.persistence.room.Database;
-import android.arch.persistence.room.Room;
-import android.arch.persistence.room.RoomDatabase;
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
 import android.content.Context;
 
 @Database(entities = {SubscribedUserData.class}, version = 1)
diff --git a/app/src/main/java/SubscribedUserDatabase/SubscribedUserViewModel.java b/app/src/main/java/SubscribedUserDatabase/SubscribedUserViewModel.java
index 858fac48..ed1db58f 100644
--- a/app/src/main/java/SubscribedUserDatabase/SubscribedUserViewModel.java
+++ b/app/src/main/java/SubscribedUserDatabase/SubscribedUserViewModel.java
@@ -1,8 +1,8 @@
 package SubscribedUserDatabase;
 
 import android.app.Application;
-import android.arch.lifecycle.AndroidViewModel;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
 
 import java.util.List;
 
diff --git a/app/src/main/java/User/UserDao.java b/app/src/main/java/User/UserDao.java
index 4ce2536b..2bf7b824 100644
--- a/app/src/main/java/User/UserDao.java
+++ b/app/src/main/java/User/UserDao.java
@@ -1,10 +1,10 @@
 package User;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.persistence.room.Dao;
-import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.OnConflictStrategy;
-import android.arch.persistence.room.Query;
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
 
 @Dao
 public interface UserDao {
diff --git a/app/src/main/java/User/UserData.java b/app/src/main/java/User/UserData.java
index a3b15b0e..c334c289 100644
--- a/app/src/main/java/User/UserData.java
+++ b/app/src/main/java/User/UserData.java
@@ -1,8 +1,8 @@
 package User;
 
-import android.arch.persistence.room.ColumnInfo;
-import android.arch.persistence.room.Entity;
-import android.support.annotation.NonNull;
+import androidx.room.ColumnInfo;
+import androidx.room.Entity;
+import androidx.annotation.NonNull;
 
 import SubscribedUserDatabase.SubscribedUserData;
 
diff --git a/app/src/main/java/User/UserRepository.java b/app/src/main/java/User/UserRepository.java
index d505db2b..b9e36ea4 100644
--- a/app/src/main/java/User/UserRepository.java
+++ b/app/src/main/java/User/UserRepository.java
@@ -1,7 +1,7 @@
 package User;
 
 import android.app.Application;
-import android.arch.lifecycle.LiveData;
+import androidx.lifecycle.LiveData;
 import android.os.AsyncTask;
 
 public class UserRepository {
diff --git a/app/src/main/java/User/UserRoomDatabase.java b/app/src/main/java/User/UserRoomDatabase.java
index 288400a6..7faa7e2c 100644
--- a/app/src/main/java/User/UserRoomDatabase.java
+++ b/app/src/main/java/User/UserRoomDatabase.java
@@ -1,8 +1,8 @@
 package User;
 
-import android.arch.persistence.room.Database;
-import android.arch.persistence.room.Room;
-import android.arch.persistence.room.RoomDatabase;
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
 import android.content.Context;
 
 @Database(entities = {UserData.class}, version = 1)
diff --git a/app/src/main/java/User/UserViewModel.java b/app/src/main/java/User/UserViewModel.java
index a006e253..aab98645 100644
--- a/app/src/main/java/User/UserViewModel.java
+++ b/app/src/main/java/User/UserViewModel.java
@@ -1,13 +1,11 @@
 package User;
 
 import android.app.Application;
-import android.arch.lifecycle.AndroidViewModel;
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.ViewModel;
-import android.arch.lifecycle.ViewModelProvider;
-import android.support.annotation.NonNull;
-
-import SubredditDatabase.SubredditViewModel;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.annotation.NonNull;
 
 public class UserViewModel extends AndroidViewModel {
     private UserRepository mSubredditRepository;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AccessTokenAuthenticator.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AccessTokenAuthenticator.java
index b7f8e104..2aebbd52 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/AccessTokenAuthenticator.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AccessTokenAuthenticator.java
@@ -1,8 +1,6 @@
 package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
 import android.util.Log;
 
 import org.json.JSONException;
@@ -12,6 +10,8 @@ import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import okhttp3.Authenticator;
 import okhttp3.Headers;
 import okhttp3.Request;
@@ -31,7 +31,7 @@ class AccessTokenAuthenticator implements Authenticator {
 
     @Nullable
     @Override
-    public Request authenticate(@NonNull Route route, @NonNull Response response) throws IOException {
+    public Request authenticate(@NonNull Route route, @NonNull Response response) {
         if (response.code() == 401) {
             String accessToken = response.request().header(RedditUtils.AUTHORIZATION_KEY).substring(RedditUtils.AUTHORIZATION_BASE.length());
             synchronized (this) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
index 44bc7fe8..1ec848ad 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentAdapter.java
@@ -1,16 +1,16 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.paging.PagedListAdapter;
+import androidx.paging.PagedListAdapter;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.ColorFilter;
 import android.net.Uri;
-import android.support.annotation.NonNull;
-import android.support.customtabs.CustomTabsIntent;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.util.DiffUtil;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.browser.customtabs.CustomTabsIntent;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
index 9e98f29a..99084dbf 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSource.java
@@ -1,8 +1,8 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.MutableLiveData;
-import android.arch.paging.PageKeyedDataSource;
-import android.support.annotation.NonNull;
+import androidx.lifecycle.MutableLiveData;
+import androidx.paging.PageKeyedDataSource;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSourceFactory.java
index 2c149dbe..1d16e2d2 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentDataSourceFactory.java
@@ -1,7 +1,7 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.MutableLiveData;
-import android.arch.paging.DataSource;
+import androidx.lifecycle.MutableLiveData;
+import androidx.paging.DataSource;
 
 import java.util.Locale;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
index 84186625..08b465b3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentMultiLevelRecyclerViewAdapter.java
@@ -5,10 +5,10 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.ColorFilter;
 import android.net.Uri;
-import android.support.annotation.NonNull;
-import android.support.customtabs.CustomTabsIntent;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.browser.customtabs.CustomTabsIntent;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentViewModel.java
index 12d28818..def1e287 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CommentViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CommentViewModel.java
@@ -1,12 +1,12 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.Transformations;
-import android.arch.lifecycle.ViewModel;
-import android.arch.lifecycle.ViewModelProvider;
-import android.arch.paging.LivePagedListBuilder;
-import android.arch.paging.PagedList;
-import android.support.annotation.NonNull;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.Transformations;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.paging.LivePagedListBuilder;
+import androidx.paging.PagedList;
+import androidx.annotation.NonNull;
 
 import java.util.Locale;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
index acd49008..0afb2978 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java
@@ -1,6 +1,6 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchMyInfo.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchMyInfo.java
index d638db9c..393349a1 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchMyInfo.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchMyInfo.java
@@ -1,7 +1,7 @@
 package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import retrofit2.Call;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
index 3949e667..f3f1536b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubredditData.java
@@ -1,6 +1,6 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import retrofit2.Call;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubscribedThing.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubscribedThing.java
index 691d170b..c0a96870 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubscribedThing.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchSubscribedThing.java
@@ -1,7 +1,7 @@
 package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
index 9bfcf7c3..7415be7e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchUserData.java
@@ -1,6 +1,6 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import User.UserData;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/LoginActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/LoginActivity.java
index 605d2d23..5e392a2c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/LoginActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/LoginActivity.java
@@ -6,7 +6,7 @@ import android.content.SharedPreferences;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.MenuItem;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
index 4e4a30d2..bbd6e60c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/MainActivity.java
@@ -1,19 +1,19 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.ViewModelProviders;
+import androidx.lifecycle.ViewModelProviders;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
-import android.support.v4.view.GravityCompat;
-import android.support.v4.widget.DrawerLayout;
-import android.support.v7.app.ActionBarDrawerToggle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.Toolbar;
+import androidx.fragment.app.Fragment;
+import androidx.core.view.GravityCompat;
+import androidx.drawerlayout.widget.DrawerLayout;
+import androidx.appcompat.app.ActionBarDrawerToggle;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.appcompat.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
index 6f374fb9..6c4ddb8c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java
@@ -1,8 +1,8 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.MutableLiveData;
-import android.arch.paging.PageKeyedDataSource;
-import android.support.annotation.NonNull;
+import androidx.lifecycle.MutableLiveData;
+import androidx.paging.PageKeyedDataSource;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
index 58f67d42..1f8d0ccc 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSourceFactory.java
@@ -1,7 +1,7 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.MutableLiveData;
-import android.arch.paging.DataSource;
+import androidx.lifecycle.MutableLiveData;
+import androidx.paging.DataSource;
 
 import java.util.Locale;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
index 28ad4cef..493eb616 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostFragment.java
@@ -1,15 +1,15 @@
 package ml.docilealligator.infinityforreddit;
 
 
-import android.arch.lifecycle.ViewModelProviders;
+import androidx.lifecycle.ViewModelProviders;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.v4.app.Fragment;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostRecyclerViewAdapter.java
index d2ca18ea..657919ed 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostRecyclerViewAdapter.java
@@ -1,21 +1,21 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.paging.PagedListAdapter;
+import androidx.paging.PagedListAdapter;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.ColorFilter;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.customtabs.CustomTabsIntent;
-import android.support.design.card.MaterialCardView;
-import android.support.design.chip.Chip;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.util.DiffUtil;
-import android.support.v7.widget.CardView;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.browser.customtabs.CustomTabsIntent;
+import com.google.android.material.card.MaterialCardView;
+import com.google.android.material.chip.Chip;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.cardview.widget.CardView;
+import androidx.recyclerview.widget.RecyclerView;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
index 8bfc4560..93d51f25 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/PostViewModel.java
@@ -1,12 +1,12 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.LiveData;
-import android.arch.lifecycle.Transformations;
-import android.arch.lifecycle.ViewModel;
-import android.arch.lifecycle.ViewModelProvider;
-import android.arch.paging.LivePagedListBuilder;
-import android.arch.paging.PagedList;
-import android.support.annotation.NonNull;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.Transformations;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.paging.LivePagedListBuilder;
+import androidx.paging.PagedList;
+import androidx.annotation.NonNull;
 
 import java.util.Locale;
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SharedPreferencesUtils.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SharedPreferencesUtils.java
index 5ab2286d..7df06afc 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SharedPreferencesUtils.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SharedPreferencesUtils.java
@@ -10,9 +10,6 @@ public class SharedPreferencesUtils {
     static final String AUTH_CODE_KEY = "code";
     public static final String ACCESS_TOKEN_KEY = "accessToken";
     static final String REFRESH_TOKEN_KEY = "refreshToken";
-    static final String QUERY_ACCESS_TOKEN_TIME_KEY = "queryAccessTokenTime";
-    static final String ACCESS_TOKEN_EXPIRE_INTERVAL_KEY = "accessTokenExpireInterval";
-    static final String MODHASH_KEY = "modhash";
     static final String USER_KEY = "user";
     static final String PROFILE_IMAGE_URL_KEY = "profileImageUrl";
     static final String BANNER_IMAGE_URL_KEY = "bannerImageUrl";
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditSubscription.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditSubscription.java
index 4a5f9ef5..ceb73e3b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditSubscription.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubredditSubscription.java
@@ -2,7 +2,7 @@ package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.HashMap;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedSubredditRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedSubredditRecyclerViewAdapter.java
index d4098c1b..305a2657 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedSubredditRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedSubredditRecyclerViewAdapter.java
@@ -2,8 +2,8 @@ package ml.docilealligator.infinityforreddit;
 
 import android.content.Context;
 import android.content.Intent;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedUserRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedUserRecyclerViewAdapter.java
index 8f0e402e..a2fd1aab 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedUserRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/SubscribedUserRecyclerViewAdapter.java
@@ -2,8 +2,8 @@ package ml.docilealligator.infinityforreddit;
 
 import android.content.Context;
 import android.content.Intent;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/UserFollowing.java b/app/src/main/java/ml/docilealligator/infinityforreddit/UserFollowing.java
index 92d5012c..ec069664 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/UserFollowing.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/UserFollowing.java
@@ -2,7 +2,7 @@ package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.HashMap;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewImageActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewImageActivity.java
index 5d5fba7f..e610d28d 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewImageActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewImageActivity.java
@@ -15,12 +15,12 @@ import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.ForegroundColorSpan;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
index f6555da5..86bd6c9b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java
@@ -7,16 +7,16 @@ import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.customtabs.CustomTabsIntent;
-import android.support.design.chip.Chip;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.design.widget.Snackbar;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.CardView;
-import android.support.v7.widget.DividerItemDecoration;
-import android.support.v7.widget.LinearLayoutManager;
+import androidx.annotation.Nullable;
+import androidx.browser.customtabs.CustomTabsIntent;
+import com.google.android.material.chip.Chip;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.cardview.widget.CardView;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ImageView;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
index d24bb0b1..831a22ff 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
@@ -1,18 +1,18 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.ViewModelProviders;
+import androidx.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.support.design.chip.Chip;
-import android.support.design.widget.AppBarLayout;
-import android.support.design.widget.CollapsingToolbarLayout;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.design.widget.Snackbar;
-import android.support.v4.app.Fragment;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import com.google.android.material.chip.Chip;
+import com.google.android.material.appbar.AppBarLayout;
+import com.google.android.material.appbar.CollapsingToolbarLayout;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.fragment.app.Fragment;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
index ed0f2437..c5dedf11 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
@@ -1,18 +1,18 @@
 package ml.docilealligator.infinityforreddit;
 
-import android.arch.lifecycle.ViewModelProviders;
+import androidx.lifecycle.ViewModelProviders;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
 import android.os.Bundle;
-import android.support.design.chip.Chip;
-import android.support.design.widget.AppBarLayout;
-import android.support.design.widget.CollapsingToolbarLayout;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.design.widget.Snackbar;
-import android.support.v4.app.Fragment;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import com.google.android.material.chip.Chip;
+import com.google.android.material.appbar.AppBarLayout;
+import com.google.android.material.appbar.CollapsingToolbarLayout;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.fragment.app.Fragment;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewVideoActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewVideoActivity.java
index 2163fa12..6ef9b47e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewVideoActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewVideoActivity.java
@@ -16,11 +16,11 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
-import android.support.annotation.NonNull;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.ForegroundColorSpan;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/VoteThing.java b/app/src/main/java/ml/docilealligator/infinityforreddit/VoteThing.java
index 432ad988..175bcf1b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/VoteThing.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/VoteThing.java
@@ -1,7 +1,7 @@
 package ml.docilealligator.infinityforreddit;
 
 import android.content.SharedPreferences;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.HashMap;
diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
index ebe641c7..908efa3c 100644
--- a/app/src/main/res/layout/activity_login.xml
+++ b/app/src/main/res/layout/activity_login.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
@@ -11,4 +11,4 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
-</android.support.constraint.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 5da5a9d3..6a5a0aff 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<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"
@@ -13,14 +13,14 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
-        <android.support.design.widget.NavigationView
+        <com.google.android.material.navigation.NavigationView
             android:id="@+id/nav_view"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:layout_gravity="start"
             android:fitsSystemWindows="true">
 
-            <android.support.v4.widget.NestedScrollView
+            <androidx.core.widget.NestedScrollView
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:scrollbars="vertical">
@@ -72,7 +72,7 @@
                         android:layout_margin="16dp"
                         android:visibility="gone"/>
 
-                    <android.support.v7.widget.RecyclerView
+                    <androidx.recyclerview.widget.RecyclerView
                         android:id="@+id/subscribed_user_recycler_view_main_activity"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content" />
@@ -85,15 +85,15 @@
                         android:layout_margin="16dp"
                         android:visibility="gone"/>
 
-                    <android.support.v7.widget.RecyclerView
+                    <androidx.recyclerview.widget.RecyclerView
                         android:id="@+id/subscribed_subreddit_recycler_view_main_activity"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content" />
 
                 </LinearLayout>
 
-            </android.support.v4.widget.NestedScrollView>
+            </androidx.core.widget.NestedScrollView>
 
-        </android.support.design.widget.NavigationView>
+        </com.google.android.material.navigation.NavigationView>
 
-</android.support.v4.widget.DrawerLayout>
+</androidx.drawerlayout.widget.DrawerLayout>
diff --git a/app/src/main/res/layout/activity_view_post_detail.xml b/app/src/main/res/layout/activity_view_post_detail.xml
index 103edf40..0f7c2002 100644
--- a/app/src/main/res/layout/activity_view_post_detail.xml
+++ b/app/src/main/res/layout/activity_view_post_detail.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout 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/coordinator_layout_view_post_detail"
@@ -7,7 +7,7 @@
     android:layout_height="match_parent"
     tools:context=".ViewPostDetailActivity">
 
-    <android.support.v4.widget.NestedScrollView
+    <androidx.core.widget.NestedScrollView
         android:layout_width="match_parent"
         android:layout_height="wrap_content">
 
@@ -17,7 +17,7 @@
             android:orientation="vertical"
             android:descendantFocusability="blocksDescendants">
 
-            <android.support.design.card.MaterialCardView
+            <com.google.android.material.card.MaterialCardView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content">
 
@@ -26,7 +26,7 @@
                     android:layout_height="match_parent"
                     android:orientation="vertical">
 
-                    <android.support.constraint.ConstraintLayout
+                    <androidx.constraintlayout.widget.ConstraintLayout
                         android:id="@+id/relative_layout_view_post_detail"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content">
@@ -66,7 +66,7 @@
                             app:layout_constraintEnd_toEndOf="parent"
                             app:layout_constraintTop_toTopOf="parent"/>
 
-                    </android.support.constraint.ConstraintLayout>
+                    </androidx.constraintlayout.widget.ConstraintLayout>
 
                     <TextView
                         android:id="@+id/title_text_view_view_post_detail"
@@ -94,7 +94,7 @@
                         android:layout_marginStart="16dp"
                         android:layout_marginEnd="16dp">
 
-                        <android.support.design.chip.Chip
+                        <com.google.android.material.chip.Chip
                             android:id="@+id/type_text_view_view_post_detail"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
@@ -138,7 +138,7 @@
                             android:tint="@color/colorAccent"
                             android:visibility="gone"/>
 
-                        <android.support.design.chip.Chip
+                        <com.google.android.material.chip.Chip
                             android:id="@+id/nsfw_text_view_view_post_detail"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
@@ -257,7 +257,7 @@
 
                 </LinearLayout>
 
-            </android.support.design.card.MaterialCardView>
+            </com.google.android.material.card.MaterialCardView>
 
             <com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar
                 android:id="@+id/comment_progress_bar_view_post_detail"
@@ -269,7 +269,7 @@
                 app:mlpb_progress_color="@color/colorAccent"
                 android:layout_gravity="center_horizontal"/>
 
-            <android.support.v7.widget.CardView
+            <androidx.cardview.widget.CardView
                 android:id="@+id/comment_card_view_view_post_detail"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -300,7 +300,7 @@
 
                 </LinearLayout>
 
-            </android.support.v7.widget.CardView>
+            </androidx.cardview.widget.CardView>
 
             <LinearLayout
                 android:id="@+id/no_comment_wrapper_linear_layout_view_post_detail"
@@ -329,6 +329,6 @@
         </LinearLayout>
 
 
-    </android.support.v4.widget.NestedScrollView>
+    </androidx.core.widget.NestedScrollView>
 
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_view_subreddit_detail.xml b/app/src/main/res/layout/activity_view_subreddit_detail.xml
index 51566dbe..5d83b5fa 100644
--- a/app/src/main/res/layout/activity_view_subreddit_detail.xml
+++ b/app/src/main/res/layout/activity_view_subreddit_detail.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout 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:layout_width="match_parent"
@@ -7,13 +7,13 @@
     android:id="@+id/coordinator_layout_view_subreddit_detail_activity"
     tools:context=".ViewSubredditDetailActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
         android:id="@+id/app_bar_layout_view_subreddit_detail_activity"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/AppTheme.AppBarOverlay">
 
-        <android.support.design.widget.CollapsingToolbarLayout
+        <com.google.android.material.appbar.CollapsingToolbarLayout
             android:id="@+id/collapsing_toolbar_layout_view_subreddit_detail_activity"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
@@ -61,7 +61,7 @@
                         android:textColor="@color/colorAccent"
                         android:layout_gravity="center_horizontal"/>
 
-                    <android.support.design.chip.Chip
+                    <com.google.android.material.chip.Chip
                         android:id="@+id/subscribe_subreddit_chip_view_subreddit_detail_activity"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
@@ -103,7 +103,7 @@
 
             </RelativeLayout>
 
-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                 android:id="@+id/toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
@@ -112,10 +112,10 @@
                 app:popupTheme="@style/AppTheme.PopupOverlay"
                 app:navigationIcon="?attr/homeAsUpIndicator" />
 
-        </android.support.design.widget.CollapsingToolbarLayout>
+        </com.google.android.material.appbar.CollapsingToolbarLayout>
 
-    </android.support.design.widget.AppBarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
 
     <include layout="@layout/content_view_subreddit_detail" />
 
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_view_user_detail.xml b/app/src/main/res/layout/activity_view_user_detail.xml
index a1fa6dc4..ca8625d3 100644
--- a/app/src/main/res/layout/activity_view_user_detail.xml
+++ b/app/src/main/res/layout/activity_view_user_detail.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout 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:layout_width="match_parent"
@@ -7,13 +7,13 @@
     android:id="@+id/coordinator_layout_view_user_detail_activity"
     tools:context=".ViewUserDetailActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
         android:id="@+id/app_bar_layout_view_user_detail_activity"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/AppTheme.AppBarOverlay">
 
-        <android.support.design.widget.CollapsingToolbarLayout
+        <com.google.android.material.appbar.CollapsingToolbarLayout
             android:id="@+id/collapsing_toolbar_layout_view_user_detail_activity"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
@@ -69,7 +69,7 @@
                         android:textColor="@android:color/black"
                         android:layout_gravity="center_horizontal"/>
 
-                    <android.support.design.chip.Chip
+                    <com.google.android.material.chip.Chip
                         android:id="@+id/subscribe_user_chip_view_user_detail_activity"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
@@ -82,7 +82,7 @@
 
             </RelativeLayout>
 
-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                 android:id="@+id/toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
@@ -91,10 +91,10 @@
                 app:popupTheme="@style/AppTheme.PopupOverlay"
                 app:navigationIcon="?attr/homeAsUpIndicator"/>
 
-        </android.support.design.widget.CollapsingToolbarLayout>
+        </com.google.android.material.appbar.CollapsingToolbarLayout>
 
-    </android.support.design.widget.AppBarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
 
     <include layout="@layout/content_view_user_detail" />
 
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/app_bar_main.xml b/app/src/main/res/layout/app_bar_main.xml
index b4df7936..f8894bda 100644
--- a/app/src/main/res/layout/app_bar_main.xml
+++ b/app/src/main/res/layout/app_bar_main.xml
@@ -1,25 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout 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:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context="ml.docilealligator.infinityforreddit.MainActivity">
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/AppTheme.AppBarOverlay">
 
-        <android.support.v7.widget.Toolbar
+        <androidx.appcompat.widget.Toolbar
             android:id="@+id/toolbar"
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
             app:popupTheme="@style/AppTheme.PopupOverlay" />
 
-    </android.support.design.widget.AppBarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
 
     <include layout="@layout/content_main" />
 
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/fragment_post.xml b/app/src/main/res/layout/fragment_post.xml
index 1c78fcad..3b073f08 100644
--- a/app/src/main/res/layout/fragment_post.xml
+++ b/app/src/main/res/layout/fragment_post.xml
@@ -1,4 +1,4 @@
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
@@ -16,7 +16,7 @@
         app:mlpb_progress_color="@color/colorAccent"
         android:layout_gravity="center_horizontal"/>
 
-    <android.support.v7.widget.RecyclerView
+    <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/recycler_view_post_fragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
@@ -51,4 +51,4 @@
         android:layout_margin="@dimen/fab_margin"
         app:srcCompat="@drawable/baseline_add_white_24" />-->
 
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/item_post.xml b/app/src/main/res/layout/item_post.xml
index b3d32486..9d94cb2a 100644
--- a/app/src/main/res/layout/item_post.xml
+++ b/app/src/main/res/layout/item_post.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+<com.google.android.material.card.MaterialCardView 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="wrap_content"
@@ -13,7 +13,7 @@
         android:layout_height="wrap_content"
         android:orientation="vertical">
 
-        <android.support.constraint.ConstraintLayout
+        <androidx.constraintlayout.widget.ConstraintLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
 
@@ -65,7 +65,7 @@
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintTop_toTopOf="parent" />
 
-        </android.support.constraint.ConstraintLayout>
+        </androidx.constraintlayout.widget.ConstraintLayout>
 
         <TextView
             android:id="@+id/title_text_view_best_post_item"
@@ -82,7 +82,7 @@
             android:layout_marginStart="16dp"
             android:layout_marginEnd="16dp">
 
-            <android.support.design.chip.Chip
+            <com.google.android.material.chip.Chip
                 android:id="@+id/type_text_view_item_best_post"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -129,7 +129,7 @@
                 android:layout_centerVertical="true"
                 android:visibility="gone"/>
 
-            <android.support.design.chip.Chip
+            <com.google.android.material.chip.Chip
                 android:id="@+id/nsfw_text_view_item_best_post"
                 android:text="@string/nsfw"
                 android:layout_width="wrap_content"
@@ -250,4 +250,4 @@
 
     </LinearLayout>
 
-</android.support.design.card.MaterialCardView>
\ No newline at end of file
+</com.google.android.material.card.MaterialCardView>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index af7d754f..cdfe2895 100644
--- a/build.gradle
+++ b/build.gradle
@@ -31,6 +31,6 @@ task clean(type: Delete) {
 }
 
 ext {
-    roomVersion = '1.1.1'
-    archLifecycleVersion = '1.1.1'
+    roomVersion = '2.1.0-alpha04'
+    archLifecycleVersion = '2.1.0-alpha02'
 }
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index aac7c9b4..9e6fce10 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,6 +9,8 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
+android.enableJetifier=true
+android.useAndroidX=true
 org.gradle.jvmargs=-Xmx1536m
 
 # When configured, Gradle will run in incubating parallel mode.