From 4399cdadb0b5429bd017f0da43aa2d858b6650cb Mon Sep 17 00:00:00 2001
From: Sylvia van Os <sylvia@hackerchick.me>
Date: Sun, 15 Feb 2026 11:49:58 +0100
Subject: [PATCH] Fix crash in volume button card switching with no other cards

---
 .../java/protect/card_locker/LoyaltyCardViewActivity.java    | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
index f62b7e84f..41566aa11 100644
--- a/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
+++ b/app/src/main/java/protect/card_locker/LoyaltyCardViewActivity.java
@@ -583,6 +583,11 @@ public class LoyaltyCardViewActivity extends CatimaAppCompatActivity implements
     }
 
     private void prevNextCard(boolean next) {
+        // If there are no other cards, don't bother switching
+        if (cardList == null || cardList.size() == 1) {
+            return;
+        }
+
         // If we're in RTL layout, we want the "left" button to be "next" instead of "previous"
         // So we swap next around
         boolean transitionRight = next;