From 7086582fad10a8c9f85ccf8f84a2e6bf1d44f379 Mon Sep 17 00:00:00 2001
From: r-ca <nem@nem.x0.to>
Date: Mon, 29 Jan 2024 01:56:57 +0900
Subject: [PATCH] =?UTF-8?q?getItemCount=E3=81=A7=E3=82=A4=E3=83=B3?=
 =?UTF-8?q?=E3=82=B9=E3=82=BF=E3=83=B3=E3=82=B9=E5=A4=89=E6=95=B0=E3=81=AE?=
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---
 .../lacerta/component/viewer/ViewerViewPagerAdapter.java  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerViewPagerAdapter.java b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerViewPagerAdapter.java
index 3c91cde5..b6db3f6d 100644
--- a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerViewPagerAdapter.java
+++ b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerViewPagerAdapter.java
@@ -34,7 +34,13 @@ public class ViewerViewPagerAdapter extends FragmentStateAdapter {
 
     @Override
     public int getItemCount() {
-        return fragmentTargetIdList == null ? 0 : fragmentTargetIdList.size();
+        if (fragmentTargetIdList == null || fragmentTitleList == null) {
+            return 0;
+        } else if (fragmentTargetIdList.size() != fragmentTitleList.size()) {
+            throw new IllegalStateException("fragmentTargetIdList.size() != fragmentTitleList.size()");
+        } else {
+            return fragmentTargetIdList.size();
+        }
     }
 
     @Nullable