From 2b6b882a818005563223e444232d35f3f525685e Mon Sep 17 00:00:00 2001
From: Karim Abou Zeid <karim23697@gmail.com>
Date: Sat, 30 Dec 2017 18:50:45 +0100
Subject: [PATCH] Display toast when trying to uncheck the last library
 category

---
 .../com/kabouzeid/gramophone/adapter/CategoryInfoAdapter.java  | 3 +++
 app/src/main/res/values/strings.xml                            | 1 +
 2 files changed, 4 insertions(+)

diff --git a/app/src/main/java/com/kabouzeid/gramophone/adapter/CategoryInfoAdapter.java b/app/src/main/java/com/kabouzeid/gramophone/adapter/CategoryInfoAdapter.java
index 7f412e71..7dead410 100644
--- a/app/src/main/java/com/kabouzeid/gramophone/adapter/CategoryInfoAdapter.java
+++ b/app/src/main/java/com/kabouzeid/gramophone/adapter/CategoryInfoAdapter.java
@@ -9,6 +9,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CheckBox;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.model.CategoryInfo;
@@ -44,6 +45,8 @@ public class CategoryInfoAdapter extends RecyclerView.Adapter<CategoryInfoAdapte
             if (!(categoryInfo.visible && isLastCheckedCategory(categoryInfo))) {
                 categoryInfo.visible = !categoryInfo.visible;
                 holder.checkBox.setChecked(categoryInfo.visible);
+            } else {
+                Toast.makeText(holder.itemView.getContext(), R.string.you_have_to_select_at_least_one_category, Toast.LENGTH_SHORT).show();
             }
         });
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 00a4bdda..08b52471 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -293,4 +293,5 @@
     <string name="set_artist_image">Set artist image</string>
     <string name="library_categories">Library categories</string>
     <string name="pref_summary_library_categories">Configure visibility and order of library categories.</string>
+    <string name="you_have_to_select_at_least_one_category">You have to select at least one category.</string>
 </resources>