Fixed tab page icons for some Android versions

app/src/main/java/eu/faircode/email/FragmentOptions.java

@@ -495,6 +495,7 @@ public class FragmentOptions extends FragmentBase {
         }
 
         private CharSequence getTitle(int titleid, int iconid, int position) {
+            String title = getString(titleid).toUpperCase();
             Drawable icon = getResources().getDrawable(iconid);
 
             int iconSize = getResources().getDimensionPixelSize(R.dimen.menu_item_icon_size);
@@ -507,7 +508,7 @@ public class FragmentOptions extends FragmentBase {
 
             ImageSpan imageSpan = new ImageSpan(icon, DynamicDrawableSpan.ALIGN_BOTTOM);
 
-            SpannableStringBuilder ssb = new SpannableStringBuilder(getString(titleid));
+            SpannableStringBuilder ssb = new SpannableStringBuilder(title);
             if (position > 0)
                 ssb.setSpan(new RelativeSizeSpan(0.85f), 0, ssb.length(), 0);
             ssb.insert(0, "\uFFFC\u2002"); // object replacement character, en space

app/src/main/res/layout/fragment_options.xml

@@ -15,6 +15,7 @@
 
         <com.google.android.material.tabs.TabLayout
             android:id="@+id/tab_layout"
+            style="@style/tabLayoutStyle"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             app:tabMode="scrollable" />

app/src/main/res/values/styles.xml

@@ -492,6 +492,14 @@
         <item name="android:fadeScrollbars">false</item>
     </style>
 
+    <style name="tabLayoutStyle" parent="Widget.Design.TabLayout">
+        <item name="tabTextAppearance">@style/tabLayoutStyleTextAppearance</item>
+    </style>
+
+    <style name="tabLayoutStyleTextAppearance" parent="TextAppearance.Design.Tab">
+        <item name="textAllCaps">false</item>
+    </style>
+
     <style name="fullScreenDialog" parent="android:Theme">
         <item name="android:windowNoTitle">true</item>
         <item name="android:windowIsFloating">false</item>