Use MaterialColors.getColor instead of our own helper

I set CompactDividerDecoration to transparant, because that was already
effectively the case. I think we can remove this class entirely, but
I'll do that in a separate PR.

app/src/main/java/com/beemdevelopment/aegis/helpers/ThemeHelper.java

@@ -1,23 +0,0 @@
-package com.beemdevelopment.aegis.helpers;
-
-import android.content.res.Resources;
-import android.graphics.Color;
-import android.util.TypedValue;
-
-import androidx.annotation.ColorInt;
-
-import com.beemdevelopment.aegis.R;
-
-public class ThemeHelper {
-    private ThemeHelper() {
-
-    }
-
-    public static int getThemeColor(int attributeId, Resources.Theme currentTheme) {
-        TypedValue typedValue = new TypedValue();
-        currentTheme.resolveAttribute(attributeId, typedValue, true);
-        @ColorInt int color = typedValue.data;
-
-        return color;
-    }
-}

app/src/main/java/com/beemdevelopment/aegis/ui/AboutActivity.java

@@ -16,11 +16,11 @@ import androidx.annotation.StringRes;
 
 import com.beemdevelopment.aegis.BuildConfig;
 import com.beemdevelopment.aegis.R;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.licenses.GlideLicense;
 import com.beemdevelopment.aegis.licenses.ProtobufLicense;
 import com.beemdevelopment.aegis.ui.dialogs.ChangelogDialog;
 import com.beemdevelopment.aegis.ui.dialogs.LicenseDialog;
+import com.google.android.material.color.MaterialColors;
 
 import de.psdev.licensesdialog.LicenseResolver;
 import de.psdev.licensesdialog.LicensesDialog;
@@ -148,7 +148,8 @@ public class AboutActivity extends AegisActivity {
     }
 
     private String getThemeColorAsHex(@AttrRes int attributeId) {
-        return String.format("%06X", (0xFFFFFF & ThemeHelper.getThemeColor(attributeId, getTheme())));
+        int color = MaterialColors.getColor(this, attributeId, getClass().getCanonicalName());
+        return String.format("%06X", 0xFFFFFF & color);
     }
 
     @Override

app/src/main/java/com/beemdevelopment/aegis/ui/AegisActivity.java

@@ -22,11 +22,11 @@ import com.beemdevelopment.aegis.Preferences;
 import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.Theme;
 import com.beemdevelopment.aegis.ThemeMap;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.icons.IconPackManager;
 import com.beemdevelopment.aegis.vault.VaultManager;
 import com.beemdevelopment.aegis.vault.VaultRepositoryException;
 import com.google.android.material.color.DynamicColors;
+import com.google.android.material.color.MaterialColors;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
@@ -251,7 +251,7 @@ public abstract class AegisActivity extends AppCompatActivity implements VaultMa
 
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                 int statusBarColor = visibility == View.VISIBLE
-                        ? ThemeHelper.getThemeColor(com.google.android.material.R.attr.colorSurfaceContainer, getTheme())
+                        ? MaterialColors.getColor(actionModeView, com.google.android.material.R.attr.colorSurfaceContainer)
                         : _statusBarColor;
                 getWindow().setStatusBarColor(statusBarColor);
             }

app/src/main/java/com/beemdevelopment/aegis/ui/dialogs/SimpleWebViewDialog.java

@@ -17,7 +17,7 @@ import androidx.fragment.app.DialogFragment;
 
 import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.Theme;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
+import com.google.android.material.color.MaterialColors;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.common.io.CharStreams;
 
@@ -70,11 +70,21 @@ public abstract class SimpleWebViewDialog extends DialogFragment {
     }
 
     protected String getBackgroundColor() {
-        return colorToCSS(ThemeHelper.getThemeColor(com.google.android.material.R.attr.colorSurfaceContainerHigh, requireContext().getTheme()));
+        int color = MaterialColors.getColor(
+                requireContext(),
+                com.google.android.material.R.attr.colorSurfaceContainerHigh,
+                getClass().getCanonicalName()
+        );
+        return colorToCSS(color);
     }
 
     protected String getTextColor() {
-        return colorToCSS(0xFFFFFF & ThemeHelper.getThemeColor(com.google.android.material.R.attr.colorOnSurface, requireContext().getTheme()));
+        int color = MaterialColors.getColor(
+                requireContext(),
+                com.google.android.material.R.attr.colorOnSurface,
+                getClass().getCanonicalName()
+        );
+        return colorToCSS(0xFFFFFF & color);
     }
 
     @SuppressLint("DefaultLocale")

app/src/main/java/com/beemdevelopment/aegis/ui/fragments/preferences/BackupsPreferencesFragment.java

@@ -19,9 +19,9 @@ import androidx.preference.SwitchPreferenceCompat;
 
 import com.beemdevelopment.aegis.Preferences;
 import com.beemdevelopment.aegis.R;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.ui.dialogs.Dialogs;
 import com.beemdevelopment.aegis.vault.VaultRepositoryException;
+import com.google.android.material.color.MaterialColors;
 
 public class BackupsPreferencesFragment extends PreferencesFragment {
     private SwitchPreferenceCompat _androidBackupsPreference;
@@ -216,7 +216,7 @@ public class BackupsPreferencesFragment extends PreferencesFragment {
             message = getString(R.string.backup_status_failed, res.getElapsedSince(requireContext()));
         }
 
-        int color = ThemeHelper.getThemeColor(colorAttr, requireContext().getTheme());
+        int color = MaterialColors.getColor(requireContext(), colorAttr, getClass().getCanonicalName());
         Spannable spannable = new SpannableString(message);
         spannable.setSpan(new ForegroundColorSpan(color), 0, message.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
         spannable.setSpan(new StyleSpan(Typeface.BOLD), 0, message.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

app/src/main/java/com/beemdevelopment/aegis/ui/views/EntryListView.java

@@ -32,7 +32,6 @@ import com.beemdevelopment.aegis.ViewMode;
 import com.beemdevelopment.aegis.helpers.AnimationsHelper;
 import com.beemdevelopment.aegis.helpers.MetricsHelper;
 import com.beemdevelopment.aegis.helpers.SimpleItemTouchHelperCallback;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.helpers.UiRefresher;
 import com.beemdevelopment.aegis.otp.TotpInfo;
 import com.beemdevelopment.aegis.ui.dialogs.Dialogs;
@@ -635,7 +634,7 @@ public class EntryListView extends Fragment implements EntryAdapter.Listener {
     private class CompactDividerDecoration extends MaterialDividerItemDecoration {
         public CompactDividerDecoration() {
             super(requireContext(), DividerItemDecoration.VERTICAL);
-            setDividerColor(ThemeHelper.getThemeColor(androidx.appcompat.R.attr.divider, requireContext().getTheme()));
+            setDividerColorResource(requireContext(), android.R.color.transparent);
             setLastItemDecorated(false);
             setDividerThickness(MetricsHelper.convertDpToPixels(requireContext(), 0.5f));
         }

app/src/main/java/com/beemdevelopment/aegis/ui/views/IconHolder.java

@@ -8,11 +8,11 @@ import android.widget.TextView;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.beemdevelopment.aegis.R;
-import com.beemdevelopment.aegis.helpers.ThemeHelper;
 import com.beemdevelopment.aegis.icons.IconPack;
 import com.beemdevelopment.aegis.icons.IconType;
 import com.beemdevelopment.aegis.ui.glide.GlideHelper;
 import com.bumptech.glide.Glide;
+import com.google.android.material.color.MaterialColors;
 
 import java.io.File;
 
@@ -39,7 +39,7 @@ public class IconHolder extends RecyclerView.ViewHolder {
 
     public void loadIcon(Context context) {
         if (_isCustom) {
-            int tint = ThemeHelper.getThemeColor(com.google.android.material.R.attr.colorOnSurfaceVariant, context.getTheme());
+            int tint = MaterialColors.getColor(itemView, com.google.android.material.R.attr.colorOnSurfaceVariant);
             GlideHelper.loadResource(Glide.with(context), R.drawable.ic_outline_add_24, tint, _imageView);
         } else {
             GlideHelper.loadIconFile(Glide.with(context), _iconFile, _iconType, _imageView);