Refactoring

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

@@ -83,6 +83,14 @@ public class FragmentBase extends Fragment {
     static final String ACTION_STORE_ATTACHMENT = BuildConfig.APPLICATION_ID + ".STORE_ATTACHMENT";
     static final String ACTION_STORE_ATTACHMENTS = BuildConfig.APPLICATION_ID + ".STORE_ATTACHMENTS";
 
+    protected ActionBar getSupportActionBar() {
+        FragmentActivity activity = getActivity();
+        if (activity instanceof ActivityBase)
+            return ((ActivityBase) activity).getSupportActionBar();
+        else
+            return null;
+    }
+
     protected void setTitle(int resid) {
         setTitle(getString(resid));
     }

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

@@ -108,6 +108,7 @@ import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.widget.PopupMenu;
 import androidx.appcompat.widget.SwitchCompat;
@@ -1572,11 +1573,10 @@ public class FragmentCompose extends FragmentBase {
         menu.findItem(R.id.menu_zoom).setTitle(ssbZoom);
         PopupMenuLifecycle.insertIcon(context, menu.findItem(R.id.menu_zoom), false);
 
-        FragmentActivity activity = getActivity();
-        Context tcontext = (activity instanceof ActivityBase
-                ? ((ActivityBase) activity).getSupportActionBar().getThemedContext() : context);
+        ActionBar actionBar = getSupportActionBar();
+        Context actionBarContext = (actionBar == null ? context : actionBar.getThemedContext());
         int colorEncrypt = Helper.resolveColor(context, R.attr.colorEncrypt);
-        int colorActionForeground = Helper.resolveColor((tcontext), android.R.attr.textColorPrimary);
+        int colorActionForeground = Helper.resolveColor(actionBarContext, android.R.attr.textColorPrimary);
 
         View v = menu.findItem(R.id.menu_encrypt).getActionView();
         ImageButton ib = v.findViewById(R.id.button);