diff --git a/app/build.gradle b/app/build.gradle
index 7da19a77a..60ec1211e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,12 +7,12 @@ findbugs {
 }
 
 android {
-    compileSdkVersion 27
+    compileSdkVersion 29
 
     defaultConfig {
         applicationId "protect.card_locker"
         minSdkVersion 16
-        targetSdkVersion 27
+        targetSdkVersion 29
         versionCode 35
         versionName "0.25.4"
     }
@@ -46,19 +46,19 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:27.0.2'
-    compile 'com.android.support:design:27.0.2'
-    compile 'com.android.support:support-v4:27.0.2'
+    compile 'androidx.appcompat:appcompat:1.2.0-alpha01'
+    compile 'com.google.android.material:material:1.2.0-alpha03'
+    compile 'androidx.legacy:legacy-support-v4:1.0.0'
     compile 'com.journeyapps:zxing-android-embedded:3.5.0@aar'
     compile 'com.google.zxing:core:3.3.0'
     compile 'org.apache.commons:commons-csv:1.5'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    compile 'androidx.constraintlayout:constraintlayout:1.1.3'
     compile 'com.jaredrummler:colorpicker:1.0.2'
     compile group: 'com.google.guava', name: 'guava', version: '20.0'
     compile 'com.github.apl-devs:appintro:v4.2.0'
     compile "com.vanniktech:vntnumberpickerpreference:1.0.0"
     testCompile 'junit:junit:4.12'
-    testCompile "org.robolectric:robolectric:3.3.2"
+    testCompile "org.robolectric:robolectric:4.0.2"
 }
 
 task findbugs(type: FindBugs, dependsOn: 'assembleDebug') {
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index afcb2c197..034df728c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -99,7 +99,7 @@
             </intent-filter>
         </activity>
         <provider
-            android:name="android.support.v4.content.FileProvider"
+            android:name="androidx.core.content.FileProvider"
             android:grantUriPermissions="true"
             android:exported="false"
             android:authorities="${applicationId}">
diff --git a/app/src/main/java/protect/card_locker/BarcodeSelectorActivity.java b/app/src/main/java/protect/card_locker/BarcodeSelectorActivity.java
index 86c647c3b..18becdcc6 100644
--- a/app/src/main/java/protect/card_locker/BarcodeSelectorActivity.java
+++ b/app/src/main/java/protect/card_locker/BarcodeSelectorActivity.java
@@ -5,9 +5,9 @@ import android.content.Intent;
 import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.util.Log;
diff --git a/app/src/main/java/protect/card_locker/CardShortcutConfigure.java b/app/src/main/java/protect/card_locker/CardShortcutConfigure.java
index 3e2c8f639..2917d703d 100644
--- a/app/src/main/java/protect/card_locker/CardShortcutConfigure.java
+++ b/app/src/main/java/protect/card_locker/CardShortcutConfigure.java
@@ -4,8 +4,8 @@ import android.content.Intent;
 import android.database.Cursor;
 import android.os.Bundle;
 import android.os.Parcelable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
 import android.widget.AdapterView;
diff --git a/app/src/main/java/protect/card_locker/ExtrasHelper.java b/app/src/main/java/protect/card_locker/ExtrasHelper.java
index 15f3fefa7..a867c4adc 100644
--- a/app/src/main/java/protect/card_locker/ExtrasHelper.java
+++ b/app/src/main/java/protect/card_locker/ExtrasHelper.java
@@ -1,7 +1,6 @@
 package protect.card_locker;
 
-import android.support.annotation.NonNull;
-import android.util.Log;
+import androidx.annotation.NonNull;
 
 import org.json.JSONException;
 import org.json.JSONObject;
diff --git a/app/src/main/java/protect/card_locker/ImportExportActivity.java b/app/src/main/java/protect/card_locker/ImportExportActivity.java
index e0be204cc..bd8fac2d3 100644
--- a/app/src/main/java/protect/card_locker/ImportExportActivity.java
+++ b/app/src/main/java/protect/card_locker/ImportExportActivity.java
@@ -7,19 +7,18 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
-import android.database.Cursor;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.Environment;
-import android.provider.OpenableColumns;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.content.FileProvider;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.MenuItem;
 import android.view.View;
diff --git a/app/src/main/java/protect/card_locker/LoyaltyCard.java b/app/src/main/java/protect/card_locker/LoyaltyCard.java
index 40b3d4653..0df07023f 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCard.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCard.java
@@ -3,13 +3,11 @@ package protect.card_locker;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 
 import org.json.JSONException;
 import org.json.JSONObject;
 
-import java.util.HashMap;
-
 public class LoyaltyCard
 {
     public final int id;
diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardEditActivity.java b/app/src/main/java/protect/card_locker/LoyaltyCardEditActivity.java
index e408a9d02..90ee89449 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardEditActivity.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardEditActivity.java
@@ -9,11 +9,11 @@ import android.graphics.Color;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.design.widget.Snackbar;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -151,6 +151,8 @@ public class LoyaltyCardEditActivity extends AppCompatActivity
     @Override
     public void onNewIntent(Intent intent)
     {
+        super.onNewIntent(intent);
+
         Log.i(TAG, "Received new intent");
         extractIntentFields(intent);
 
@@ -506,6 +508,8 @@ public class LoyaltyCardEditActivity extends AppCompatActivity
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent intent)
     {
+        super.onActivityResult(requestCode, resultCode, intent);
+
         String contents = null;
         String format = null;
 
diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardLockerApplication.java b/app/src/main/java/protect/card_locker/LoyaltyCardLockerApplication.java
index c53584520..0705435fc 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardLockerApplication.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardLockerApplication.java
@@ -1,7 +1,7 @@
 package protect.card_locker;
 
 import android.app.Application;
-import android.support.v7.app.AppCompatDelegate;
+import androidx.appcompat.app.AppCompatDelegate;
 
 import protect.card_locker.preferences.Settings;
 
diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
index f32ff2ec2..a2d6a4248 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
@@ -5,13 +5,18 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.graphics.Color;
+import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v4.widget.TextViewCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.Toolbar;
+
+import androidx.appcompat.app.AlertDialog;
+import androidx.core.graphics.ColorUtils;
+import androidx.core.graphics.drawable.DrawableCompat;
+import androidx.core.widget.TextViewCompat;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.content.res.AppCompatResources;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.util.TypedValue;
 import android.view.Menu;
@@ -38,6 +43,7 @@ import protect.card_locker.preferences.Settings;
 public class LoyaltyCardViewActivity extends AppCompatActivity
 {
     private static final String TAG = "CardLocker";
+    private static final double LUMINANCE_MIDPOINT = 0.5;
 
     TextView cardIdFieldView;
     TextView noteView;
@@ -52,6 +58,8 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
     ImportURIHelper importURIHelper;
     Settings settings;
 
+    boolean backgroundNeedsDarkIcons;
+
     private void extractIntentFields(Intent intent)
     {
         final Bundle b = intent.getExtras();
@@ -59,6 +67,22 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
         Log.d(TAG, "View activity: id=" + loyaltyCardId);
     }
 
+    private Drawable getIcon(int icon, boolean dark)
+    {
+        Drawable unwrappedIcon = AppCompatResources.getDrawable(this, icon);
+        Drawable wrappedIcon = DrawableCompat.wrap(unwrappedIcon);
+        if(dark)
+        {
+            DrawableCompat.setTint(wrappedIcon, Color.BLACK);
+        }
+        else
+        {
+            DrawableCompat.setTintList(wrappedIcon, null);
+        }
+
+        return wrappedIcon;
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
@@ -94,6 +118,8 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
     @Override
     public void onNewIntent(Intent intent)
     {
+        super.onNewIntent(intent);
+
         Log.i(TAG, "Received new intent");
         extractIntentFields(intent);
     }
@@ -173,6 +199,27 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
 
         collapsingToolbarLayout.setBackgroundColor(backgroundHeaderColor);
 
+        // If the background is very bright, we should use dark icons
+        backgroundNeedsDarkIcons = (ColorUtils.calculateLuminance(backgroundHeaderColor) > LUMINANCE_MIDPOINT);
+        ActionBar actionBar = getSupportActionBar();
+        if(actionBar != null)
+        {
+            actionBar.setHomeAsUpIndicator(getIcon(R.drawable.ic_arrow_back_white, backgroundNeedsDarkIcons));
+        }
+
+        // Make notification area light if dark icons are needed
+        if(Build.VERSION.SDK_INT >= 23)
+        {
+            window.getDecorView().setSystemUiVisibility(backgroundNeedsDarkIcons ? View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR : 0);
+        }
+        if(Build.VERSION.SDK_INT >= 21)
+        {
+            window.setStatusBarColor(Color.TRANSPARENT);
+        }
+
+        // Set shadow colour of store text so even same color on same color would be readable
+        storeName.setShadowLayer(1, 1, 1, backgroundNeedsDarkIcons ? Color.BLACK : Color.WHITE);
+
         if(format != null)
         {
             findViewById(R.id.barcode).setVisibility(View.VISIBLE);
@@ -187,14 +234,7 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
                             @Override
                             public void onGlobalLayout()
                             {
-                                if (Build.VERSION.SDK_INT < 16)
-                                {
-                                    barcodeImage.getViewTreeObserver().removeGlobalOnLayoutListener(this);
-                                }
-                                else
-                                {
-                                    barcodeImage.getViewTreeObserver().removeOnGlobalLayoutListener(this);
-                                }
+                                barcodeImage.getViewTreeObserver().removeOnGlobalLayoutListener(this);
 
                                 Log.d(TAG, "ImageView size now known");
                                 new BarcodeImageWriterTask(barcodeImage, cardIdString, format).execute();
@@ -218,19 +258,25 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
     {
         getMenuInflater().inflate(R.menu.card_view_menu, menu);
 
-        if(settings.getLockBarcodeScreenOrientation())
+        // Always calculate lockscreen icon, it may need a black color
+        boolean lockBarcodeScreenOrientation = settings.getLockBarcodeScreenOrientation();
+        MenuItem item = menu.findItem(R.id.action_lock_unlock);
+        setOrientatonLock(item, lockBarcodeScreenOrientation);
+        if(lockBarcodeScreenOrientation)
         {
-            MenuItem item = menu.findItem(R.id.action_lock_unlock);
-            setOrientatonLock(item, true);
             item.setVisible(false);
         }
 
         if(loyaltyCard != null && !loyaltyCard.extras.getAllValues(new String[]{Locale.getDefault().getLanguage(), "en", ""}).isEmpty())
         {
-            MenuItem item = menu.findItem(R.id.action_view_extras);
-            item.setVisible(true);
+            MenuItem extraItem = menu.findItem(R.id.action_view_extras);
+            extraItem.setIcon(getIcon(R.drawable.ic_info_outline_white, backgroundNeedsDarkIcons));
+            extraItem.setVisible(true);
         }
 
+        menu.findItem(R.id.action_share).setIcon(getIcon(R.drawable.ic_share_white, backgroundNeedsDarkIcons));
+        menu.findItem(R.id.action_edit).setIcon(getIcon(R.drawable.ic_mode_edit_white_24dp, backgroundNeedsDarkIcons));
+
         return super.onCreateOptionsMenu(menu);
     }
 
@@ -291,13 +337,14 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
     {
         if(lock)
         {
-            item.setIcon(R.drawable.ic_lock_outline_white_24dp);
+
+            item.setIcon(getIcon(R.drawable.ic_lock_outline_white_24dp, backgroundNeedsDarkIcons));
             item.setTitle(R.string.unlockScreen);
             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
         }
         else
         {
-            item.setIcon(R.drawable.ic_lock_open_white_24dp);
+            item.setIcon(getIcon(R.drawable.ic_lock_open_white_24dp, backgroundNeedsDarkIcons));
             item.setTitle(R.string.lockScreen);
             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
         }
@@ -325,4 +372,4 @@ public class LoyaltyCardViewActivity extends AppCompatActivity
             })
             .show();
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/protect/card_locker/MainActivity.java b/app/src/main/java/protect/card_locker/MainActivity.java
index 466bbbe54..60d702063 100644
--- a/app/src/main/java/protect/card_locker/MainActivity.java
+++ b/app/src/main/java/protect/card_locker/MainActivity.java
@@ -12,10 +12,10 @@ import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.database.Cursor;
 import android.os.Bundle;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.SearchView;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.SearchView;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.ContextMenu;
 import android.view.Menu;
@@ -79,6 +79,8 @@ public class MainActivity extends AppCompatActivity
 
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
         if (requestCode == MAIN_REQUEST_CODE)
         {
             // We're coming back from another view so clear the search
@@ -397,4 +399,4 @@ public class MainActivity extends AppCompatActivity
         Intent intent = new Intent(this, IntroActivity.class);
         startActivityForResult(intent, MAIN_REQUEST_CODE);
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/protect/card_locker/intro/IntroActivity.java b/app/src/main/java/protect/card_locker/intro/IntroActivity.java
index d34b0b05d..37a699ed8 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroActivity.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroActivity.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 
 import com.github.paolorotolo.appintro.AppIntro;
 
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide1.java b/app/src/main/java/protect/card_locker/intro/IntroSlide1.java
index 7e53d7652..beecb43c3 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide1.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide1.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide2.java b/app/src/main/java/protect/card_locker/intro/IntroSlide2.java
index 6ee1952b7..a1e652c51 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide2.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide2.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide3.java b/app/src/main/java/protect/card_locker/intro/IntroSlide3.java
index deb6927b0..5acc83e7b 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide3.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide3.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide4.java b/app/src/main/java/protect/card_locker/intro/IntroSlide4.java
index d47a5ac8e..1a7ad6e69 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide4.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide4.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide5.java b/app/src/main/java/protect/card_locker/intro/IntroSlide5.java
index 6127ab1ba..ab3b5b757 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide5.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide5.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/intro/IntroSlide6.java b/app/src/main/java/protect/card_locker/intro/IntroSlide6.java
index d3fba4f98..217967844 100644
--- a/app/src/main/java/protect/card_locker/intro/IntroSlide6.java
+++ b/app/src/main/java/protect/card_locker/intro/IntroSlide6.java
@@ -1,7 +1,7 @@
 package protect.card_locker.intro;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+import androidx.fragment.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/app/src/main/java/protect/card_locker/preferences/Settings.java b/app/src/main/java/protect/card_locker/preferences/Settings.java
index f6c9fb026..586e18769 100644
--- a/app/src/main/java/protect/card_locker/preferences/Settings.java
+++ b/app/src/main/java/protect/card_locker/preferences/Settings.java
@@ -3,9 +3,9 @@ package protect.card_locker.preferences;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
-import android.support.annotation.IntegerRes;
-import android.support.annotation.StringRes;
-import android.support.v7.app.AppCompatDelegate;
+import androidx.annotation.IntegerRes;
+import androidx.annotation.StringRes;
+import androidx.appcompat.app.AppCompatDelegate;
 
 import protect.card_locker.R;
 
diff --git a/app/src/main/java/protect/card_locker/preferences/SettingsActivity.java b/app/src/main/java/protect/card_locker/preferences/SettingsActivity.java
index ee1bccbbb..485626742 100644
--- a/app/src/main/java/protect/card_locker/preferences/SettingsActivity.java
+++ b/app/src/main/java/protect/card_locker/preferences/SettingsActivity.java
@@ -3,9 +3,9 @@ package protect.card_locker.preferences;
 import android.os.Bundle;
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.app.AppCompatDelegate;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatDelegate;
 import android.view.MenuItem;
 
 import protect.card_locker.R;
diff --git a/app/src/main/res/drawable-hdpi/ic_arrow_back_white.png b/app/src/main/res/drawable-hdpi/ic_arrow_back_white.png
new file mode 100644
index 000000000..f782543d3
Binary files /dev/null and b/app/src/main/res/drawable-hdpi/ic_arrow_back_white.png differ
diff --git a/app/src/main/res/drawable-mdpi/ic_arrow_back_white.png b/app/src/main/res/drawable-mdpi/ic_arrow_back_white.png
new file mode 100644
index 000000000..222690b0b
Binary files /dev/null and b/app/src/main/res/drawable-mdpi/ic_arrow_back_white.png differ
diff --git a/app/src/main/res/drawable-xhdpi/ic_arrow_back_white.png b/app/src/main/res/drawable-xhdpi/ic_arrow_back_white.png
new file mode 100644
index 000000000..c4e8d91ba
Binary files /dev/null and b/app/src/main/res/drawable-xhdpi/ic_arrow_back_white.png differ
diff --git a/app/src/main/res/drawable-xxhdpi/ic_arrow_back_white.png b/app/src/main/res/drawable-xxhdpi/ic_arrow_back_white.png
new file mode 100644
index 000000000..575d5075c
Binary files /dev/null and b/app/src/main/res/drawable-xxhdpi/ic_arrow_back_white.png differ
diff --git a/app/src/main/res/layout/barcode_selector_activity.xml b/app/src/main/res/layout/barcode_selector_activity.xml
index 248087cee..8edd3374f 100644
--- a/app/src/main/res/layout/barcode_selector_activity.xml
+++ b/app/src/main/res/layout/barcode_selector_activity.xml
@@ -1,23 +1,23 @@
 <?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"
-                                                 android:fitsSystemWindows="true">
+<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"
+                                                     android:fitsSystemWindows="true">
 
-    <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>
 
     <ScrollView
         android:layout_width="fill_parent"
@@ -204,4 +204,4 @@
             </LinearLayout>
         </LinearLayout>
     </ScrollView>
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/import_export_activity.xml b/app/src/main/res/layout/import_export_activity.xml
index 7d3f7fc76..464b3657e 100644
--- a/app/src/main/res/layout/import_export_activity.xml
+++ b/app/src/main/res/layout/import_export_activity.xml
@@ -1,23 +1,23 @@
 <?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"
-                                                 android:fitsSystemWindows="true">
+<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"
+                                                     android:fitsSystemWindows="true">
 
-    <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>
 
     <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
                 android:layout_width="match_parent"
@@ -163,4 +163,4 @@
     </ScrollView>
 
 
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/loyalty_card_edit_activity.xml b/app/src/main/res/layout/loyalty_card_edit_activity.xml
index 4ce3df789..198a867b0 100644
--- a/app/src/main/res/layout/loyalty_card_edit_activity.xml
+++ b/app/src/main/res/layout/loyalty_card_edit_activity.xml
@@ -1,28 +1,28 @@
 <?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"
-                                                 android:fitsSystemWindows="true">
+<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"
+                                                     android:fitsSystemWindows="true">
 
-    <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>
 
     <ScrollView android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:background="@color/inputContrastBackground"
-                app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior">
+                app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
@@ -119,7 +119,7 @@
 
                         <EditText
                             android:id="@+id/noteEdit"
-                            android:inputType="textCapSentences"
+                            android:inputType="textMultiLine"
                             android:layout_height="wrap_content"
                             android:layout_width="match_parent"
                             android:padding="@dimen/inputPadding"
@@ -151,7 +151,7 @@
                         android:layout_width="@dimen/inputBorderThickness"
                         android:background="@color/inputBorder" />
 
-                    <android.support.constraint.ConstraintLayout
+                    <androidx.constraintlayout.widget.ConstraintLayout
                         android:layout_weight="1"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
@@ -167,7 +167,7 @@
                             android:padding="@dimen/inputPadding"
                             app:layout_constraintStart_toStartOf="parent"/>
 
-                        <android.support.constraint.ConstraintLayout
+                        <androidx.constraintlayout.widget.ConstraintLayout
                             android:id="@+id/headingColorSampleBorder"
                             android:layout_width="0dp"
                             android:layout_height="0dp"
@@ -188,7 +188,7 @@
                                 app:layout_constraintBottom_toBottomOf="parent"
                                 android:background="@android:color/white"
                                 android:contentDescription="@string/storeNameBackgroundColorDescription"/>
-                        </android.support.constraint.ConstraintLayout>
+                        </androidx.constraintlayout.widget.ConstraintLayout>
 
                        <Button
                            android:id="@+id/headingColorSelectButton"
@@ -199,7 +199,7 @@
                            android:layout_toEndOf="@id/headingColorSampleBorder"
                            android:layout_toRightOf="@id/headingColorSampleBorder"
                            app:layout_constraintEnd_toEndOf="parent"/>
-                    </android.support.constraint.ConstraintLayout>
+                    </androidx.constraintlayout.widget.ConstraintLayout>
 
                     <View
                         android:gravity="end"
@@ -223,7 +223,7 @@
                         android:layout_width="@dimen/inputBorderThickness"
                         android:background="@color/inputBorder" />
 
-                    <android.support.constraint.ConstraintLayout
+                    <androidx.constraintlayout.widget.ConstraintLayout
                         android:layout_weight="1"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
@@ -239,7 +239,7 @@
                             android:padding="@dimen/inputPadding"
                             app:layout_constraintStart_toStartOf="parent"/>
 
-                        <android.support.constraint.ConstraintLayout
+                        <androidx.constraintlayout.widget.ConstraintLayout
                             android:id="@+id/headingStoreTextColorSampleBorder"
                             android:layout_width="0dp"
                             android:layout_height="0dp"
@@ -260,7 +260,7 @@
                                 app:layout_constraintBottom_toBottomOf="parent"
                                 android:background="@android:color/white"
                                 android:contentDescription="@string/storeNameColorDescription"/>
-                        </android.support.constraint.ConstraintLayout>
+                        </androidx.constraintlayout.widget.ConstraintLayout>
 
                         <Button
                             android:id="@+id/headingStoreTextColorSelectButton"
@@ -271,7 +271,7 @@
                             android:layout_toEndOf="@id/headingStoreTextColorSampleBorder"
                             android:layout_toRightOf="@id/headingStoreTextColorSampleBorder"
                             app:layout_constraintEnd_toEndOf="parent"/>
-                    </android.support.constraint.ConstraintLayout>
+                    </androidx.constraintlayout.widget.ConstraintLayout>
 
                     <View
                         android:gravity="end"
@@ -387,4 +387,4 @@
         </LinearLayout>
     </ScrollView>
 
-</android.support.design.widget.CoordinatorLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/app/src/main/res/layout/loyalty_card_view_layout.xml b/app/src/main/res/layout/loyalty_card_view_layout.xml
index 1ba8ca5e8..e224353cf 100644
--- a/app/src/main/res/layout/loyalty_card_view_layout.xml
+++ b/app/src/main/res/layout/loyalty_card_view_layout.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout
+<androidx.coordinatorlayout.widget.CoordinatorLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/coordinator_layout"
@@ -15,12 +15,12 @@
         android:layout_height="fill_parent"
         app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
-        <android.support.constraint.ConstraintLayout
+        <androidx.constraintlayout.widget.ConstraintLayout
             android:layout_width="fill_parent"
             android:layout_height="match_parent"
             android:orientation="vertical">
 
-            <android.support.constraint.Guideline
+            <androidx.constraintlayout.widget.Guideline
                 android:id="@+id/centerGuideline"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -84,9 +84,10 @@
                 app:autoSizeTextType="uniform"
                 app:autoSizeMinTextSize="@dimen/singleCardNoteTextSizeMin"
                 app:autoSizeMaxTextSize="@dimen/singleCardNoteTextSizeMax"
-                android:textIsSelectable="true"/>
+                android:textIsSelectable="true"
+                android:scrollbars="vertical"/>
 
-        </android.support.constraint.ConstraintLayout>
+        </androidx.constraintlayout.widget.ConstraintLayout>
 
         <View
             android:id="@+id/drop_shadow_actionbar"
@@ -95,7 +96,7 @@
             android:layout_gravity="top"/>
     </FrameLayout>
 
-    <android.support.design.widget.AppBarLayout
+    <com.google.android.material.appbar.AppBarLayout
         android:id="@+id/app_bar_layout"
         android:background="@android:color/transparent"
         android:clipChildren="false"
@@ -104,7 +105,7 @@
         android:layout_height="wrap_content"
         android:weightSum="1.0"
         android:fitsSystemWindows="true">
-        <android.support.design.widget.CollapsingToolbarLayout
+        <com.google.android.material.appbar.CollapsingToolbarLayout
             android:id="@+id/collapsingToolbarLayout"
             android:clipChildren="false"
             android:clipToPadding="false"
@@ -130,7 +131,7 @@
                 android:layout_marginBottom="?actionBarSize"
                 app:layout_collapseMode="parallax"
                 android:fitsSystemWindows="true"/>
-            <android.support.v7.widget.Toolbar
+            <androidx.appcompat.widget.Toolbar
                 android:id="@id/toolbar"
                 android:background="@android:color/transparent"
                 android:theme="@style/CardView.ActionBarTheme"
@@ -138,6 +139,6 @@
                 android:layout_height="?actionBarSize"
                 app:contentInsetStart="72.0dip"
                 app:layout_collapseMode="pin" />
-        </android.support.design.widget.CollapsingToolbarLayout>
-    </android.support.design.widget.AppBarLayout>
-</android.support.design.widget.CoordinatorLayout>
\ No newline at end of file
+        </com.google.android.material.appbar.CollapsingToolbarLayout>
+    </com.google.android.material.appbar.AppBarLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/main_activity.xml b/app/src/main/res/layout/main_activity.xml
index b4f2b8006..b0a4fb6d3 100644
--- a/app/src/main/res/layout/main_activity.xml
+++ b/app/src/main/res/layout/main_activity.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout
+<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"
@@ -8,20 +8,20 @@
     android:fitsSystemWindows="true"
     tools:context="protect.card_locker.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/menu/main_menu.xml b/app/src/main/res/menu/main_menu.xml
index 537c289bc..5998c31e4 100644
--- a/app/src/main/res/menu/main_menu.xml
+++ b/app/src/main/res/menu/main_menu.xml
@@ -6,7 +6,7 @@
         android:id="@+id/action_search"
         android:title="@string/action_search"
         android:icon="@drawable/ic_search_white"
-        app:actionViewClass="android.support.v7.widget.SearchView"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
         app:showAsAction="always|collapseActionView"/>
     <item
         android:id="@+id/action_add"
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index 251fb9fb7..7475e9d6f 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -4,6 +4,5 @@
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
         <item name="android:windowDrawsSystemBarBackgrounds">true</item>
-        <item name="android:statusBarColor">@android:color/transparent</item>
     </style>
 </resources>
diff --git a/app/src/test/java/protect/card_locker/BarcodeSelectorActivityTest.java b/app/src/test/java/protect/card_locker/BarcodeSelectorActivityTest.java
index a4e8f05ef..0d53e506f 100644
--- a/app/src/test/java/protect/card_locker/BarcodeSelectorActivityTest.java
+++ b/app/src/test/java/protect/card_locker/BarcodeSelectorActivityTest.java
@@ -18,7 +18,7 @@ import static org.junit.Assert.assertEquals;
 import static org.robolectric.Shadows.shadowOf;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class BarcodeSelectorActivityTest {
     @Test
     public void emptyStateTest()
diff --git a/app/src/test/java/protect/card_locker/DatabaseTest.java b/app/src/test/java/protect/card_locker/DatabaseTest.java
index c2b030535..263795b6e 100644
--- a/app/src/test/java/protect/card_locker/DatabaseTest.java
+++ b/app/src/test/java/protect/card_locker/DatabaseTest.java
@@ -26,7 +26,7 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class DatabaseTest
 {
     private DBHelper db;
diff --git a/app/src/test/java/protect/card_locker/ImportExportActivityTest.java b/app/src/test/java/protect/card_locker/ImportExportActivityTest.java
index 8c096110e..8da091476 100644
--- a/app/src/test/java/protect/card_locker/ImportExportActivityTest.java
+++ b/app/src/test/java/protect/card_locker/ImportExportActivityTest.java
@@ -1,33 +1,32 @@
 package protect.card_locker;
 
+import static org.junit.Assert.assertEquals;
+import static org.robolectric.Shadows.shadowOf;
+
 import android.app.Activity;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.view.View;
-
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.Robolectric;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
-import org.robolectric.res.builder.RobolectricPackageManager;
-
-import static org.robolectric.Shadows.shadowOf;
-
-import static org.junit.Assert.assertEquals;
+import org.robolectric.shadows.ShadowPackageManager;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class ImportExportActivityTest
 {
     private void registerIntentHandler(String handler)
     {
         // Add something that will 'handle' the given intent type
-        RobolectricPackageManager packageManager = shadowOf(RuntimeEnvironment.application.getPackageManager());
+        PackageManager packageManager = RuntimeEnvironment.application.getPackageManager();
 
         ResolveInfo info = new ResolveInfo();
         info.isDefault = true;
@@ -47,7 +46,7 @@ public class ImportExportActivityTest
             intent.setType("*/*");
         }
 
-        packageManager.addResolveInfoForIntent(intent, info);
+        shadowOf(packageManager).addResolveInfoForIntent(intent, info);
     }
 
     private void checkVisibility(Activity activity, int state, int divider, int title, int message, int button)
diff --git a/app/src/test/java/protect/card_locker/ImportExportTest.java b/app/src/test/java/protect/card_locker/ImportExportTest.java
index f3b2ddc43..a156ebac3 100644
--- a/app/src/test/java/protect/card_locker/ImportExportTest.java
+++ b/app/src/test/java/protect/card_locker/ImportExportTest.java
@@ -34,7 +34,7 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class ImportExportTest
 {
     private Activity activity;
diff --git a/app/src/test/java/protect/card_locker/ImportURITest.java b/app/src/test/java/protect/card_locker/ImportURITest.java
index d69ee875b..e25b4c52b 100644
--- a/app/src/test/java/protect/card_locker/ImportURITest.java
+++ b/app/src/test/java/protect/card_locker/ImportURITest.java
@@ -24,7 +24,7 @@ import static org.junit.Assert.assertTrue;
 import static protect.card_locker.DBHelper.LoyaltyCardDbIds;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class ImportURITest {
     private ImportURIHelper importURIHelper;
     private DBHelper db;
diff --git a/app/src/test/java/protect/card_locker/LoyaltyCardCursorAdapterTest.java b/app/src/test/java/protect/card_locker/LoyaltyCardCursorAdapterTest.java
index b02f8ed2c..7b3c6eb79 100644
--- a/app/src/test/java/protect/card_locker/LoyaltyCardCursorAdapterTest.java
+++ b/app/src/test/java/protect/card_locker/LoyaltyCardCursorAdapterTest.java
@@ -22,7 +22,7 @@ import org.robolectric.annotation.Config;
 import static org.junit.Assert.assertEquals;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class LoyaltyCardCursorAdapterTest
 {
     private Activity activity;
diff --git a/app/src/test/java/protect/card_locker/LoyaltyCardViewActivityTest.java b/app/src/test/java/protect/card_locker/LoyaltyCardViewActivityTest.java
index 7b88463e1..d57035257 100644
--- a/app/src/test/java/protect/card_locker/LoyaltyCardViewActivityTest.java
+++ b/app/src/test/java/protect/card_locker/LoyaltyCardViewActivityTest.java
@@ -1,50 +1,46 @@
 package protect.card_locker;
 
-import android.app.Activity;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.pm.ActivityInfo;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.ResolveInfo;
-import android.graphics.Color;
-import android.graphics.drawable.ColorDrawable;
-import android.net.Uri;
-import android.os.Bundle;
-import android.preference.PreferenceManager;
-import android.support.v4.widget.TextViewCompat;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.Button;
-import android.widget.EditText;
-import android.widget.TextView;
-
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.client.android.Intents;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.Robolectric;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-import org.robolectric.annotation.Config;
-import org.robolectric.res.builder.RobolectricPackageManager;
-import org.robolectric.shadows.ShadowActivity;
-import org.robolectric.shadows.ShadowLog;
-import org.robolectric.android.controller.ActivityController;
-
-import java.io.IOException;
-
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.robolectric.Shadows.shadowOf;
 
+import android.app.Activity;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
+import android.net.Uri;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import androidx.core.widget.TextViewCompat;
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.client.android.Intents;
+import org.json.JSONException;
+import java.io.IOException;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.android.controller.ActivityController;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowActivity;
+import org.robolectric.shadows.ShadowLog;
+
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class LoyaltyCardViewActivityTest
 {
     private final String BARCODE_DATA = "428311627547";
@@ -74,7 +70,7 @@ public class LoyaltyCardViewActivityTest
     private void registerMediaStoreIntentHandler()
     {
         // Add something that will 'handle' the media capture intent
-        RobolectricPackageManager packageManager = shadowOf(RuntimeEnvironment.application.getPackageManager());
+        PackageManager packageManager = RuntimeEnvironment.application.getPackageManager();
 
         ResolveInfo info = new ResolveInfo();
         info.isDefault = true;
@@ -87,7 +83,7 @@ public class LoyaltyCardViewActivityTest
 
         Intent intent = new Intent(Intents.Scan.ACTION);
 
-        packageManager.addResolveInfoForIntent(intent, info);
+        shadowOf(packageManager).addResolveInfoForIntent(intent, info);
     }
 
     /**
@@ -230,7 +226,7 @@ public class LoyaltyCardViewActivityTest
         activityController.resume();
 
         Activity activity = (Activity)activityController.get();
-        ShadowActivity shadowActivity = shadowOf(activity);
+        
         DBHelper db = new DBHelper(activity);
         assertEquals(0, db.getLoyaltyCardCount());
 
@@ -238,15 +234,15 @@ public class LoyaltyCardViewActivityTest
         final EditText noteField = activity.findViewById(R.id.noteEdit);
         final TextView cardIdField = activity.findViewById(R.id.cardIdView);
 
-        shadowActivity.clickMenuItem(R.id.action_save);
+        shadowOf(activity).clickMenuItem(R.id.action_save);
         assertEquals(0, db.getLoyaltyCardCount());
 
         storeField.setText("store");
-        shadowActivity.clickMenuItem(R.id.action_save);
+        shadowOf(activity).clickMenuItem(R.id.action_save);
         assertEquals(0, db.getLoyaltyCardCount());
 
         noteField.setText("note");
-        shadowActivity.clickMenuItem(R.id.action_save);
+        shadowOf(activity).clickMenuItem(R.id.action_save);
         assertEquals(0, db.getLoyaltyCardCount());
     }
 
@@ -350,7 +346,7 @@ public class LoyaltyCardViewActivityTest
 
         intent.putExtras(bundle);
 
-        return Robolectric.buildActivity(clazz).withIntent(intent).create();
+        return Robolectric.buildActivity(clazz, intent).create();
     }
 
     @Test
@@ -673,7 +669,7 @@ public class LoyaltyCardViewActivityTest
         Intent intent = new Intent();
         intent.setData(importUri);
 
-        ActivityController activityController = Robolectric.buildActivity(LoyaltyCardEditActivity.class).withIntent(intent).create();
+        ActivityController activityController = Robolectric.buildActivity(LoyaltyCardEditActivity.class, intent).create();
 
         activityController.start();
         activityController.visible();
@@ -682,7 +678,7 @@ public class LoyaltyCardViewActivityTest
         Activity activity = (Activity)activityController.get();
 
         checkAllFields(activity, ViewMode.ADD_CARD, "Example Store", "", "123456", "AZTEC");
-        assertEquals(activity.findViewById(R.id.headingColorSample).getBackground(), new ColorDrawable(-416706));
-        assertEquals(activity.findViewById(R.id.headingStoreTextColorSample).getBackground(), new ColorDrawable(-1));
+        assertEquals(-416706, ((ColorDrawable) activity.findViewById(R.id.headingColorSample).getBackground()).getColor());
+        assertEquals(-1, ((ColorDrawable) activity.findViewById(R.id.headingStoreTextColorSample).getBackground()).getColor());
     }
 }
diff --git a/app/src/test/java/protect/card_locker/MainActivityTest.java b/app/src/test/java/protect/card_locker/MainActivityTest.java
index 623ca931c..5dca0759a 100644
--- a/app/src/test/java/protect/card_locker/MainActivityTest.java
+++ b/app/src/test/java/protect/card_locker/MainActivityTest.java
@@ -32,7 +32,7 @@ import static org.junit.Assert.assertTrue;
 import static org.robolectric.Shadows.shadowOf;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class MainActivityTest
 {
     private SharedPreferences prefs;
diff --git a/app/src/test/java/protect/card_locker/PkpassTest.java b/app/src/test/java/protect/card_locker/PkpassTest.java
index a317778ca..3416a6dbb 100644
--- a/app/src/test/java/protect/card_locker/PkpassTest.java
+++ b/app/src/test/java/protect/card_locker/PkpassTest.java
@@ -26,7 +26,7 @@ import java.util.Map;
 import static org.junit.Assert.assertEquals;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(constants = BuildConfig.class, sdk = 23)
+@Config(sdk = 23)
 public class PkpassTest {
     private PkpassImporter pkpassImporter;
 
diff --git a/gradle.properties b/gradle.properties
index 2b0e3c8e4..a74d1fa9b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -21,3 +21,6 @@
 # a bug. Build tools 27.0.1 has a mitigation. Avoiding aapt2 also avoids hitting the bug.
 # See: https://issuetracker.google.com/issues/64434571
 android.enableAapt2=false
+android.enableJetifier=true
+android.useAndroidX=true
+android.enableUnitTestBinaryResources=true
\ No newline at end of file