From ebc67459cf277a95a366bd6df3e7bb3347adefdc Mon Sep 17 00:00:00 2001
From: Gyubin Han <hangyub@gyu.be>
Date: Mon, 5 Jan 2026 01:16:16 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20=ED=8C=8C=EC=9D=BC=20=EB=AA=A9=EB=A1=9D?=
 =?UTF-8?q?=20=EC=A0=95=EB=A0=AC=20=EA=B8=B0=EB=8A=A5=20=EC=B6=94=EA=B0=80?=
 =?UTF-8?q?=20(=EC=9D=B4=EB=A6=84=EC=88=9C)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../be/gyu/android/file/explorer/FileItem.java     | 14 +++++++++++++-
 .../be/gyu/android/file/explorer/MainActivity.java |  3 +++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/be/gyu/android/file/explorer/FileItem.java b/app/src/main/java/be/gyu/android/file/explorer/FileItem.java
index f5335b8..029031a 100644
--- a/app/src/main/java/be/gyu/android/file/explorer/FileItem.java
+++ b/app/src/main/java/be/gyu/android/file/explorer/FileItem.java
@@ -1,6 +1,6 @@
 package be.gyu.android.file.explorer;
 
-public class FileItem {
+public class FileItem implements Comparable<FileItem> {
     private String name;
     private String path;
     private boolean isDirectory;
@@ -22,4 +22,16 @@ public class FileItem {
     public boolean isDirectory() {
         return isDirectory;
     }
+
+    @Override
+    public int compareTo(FileItem other) {
+        // Directories first
+        if (this.isDirectory() && !other.isDirectory()) {
+            return -1;
+        } else if (!this.isDirectory() && other.isDirectory()) {
+            return 1;
+        }
+        // Then sort by name, case-insensitively
+        return this.name.compareToIgnoreCase(other.name);
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/be/gyu/android/file/explorer/MainActivity.java b/app/src/main/java/be/gyu/android/file/explorer/MainActivity.java
index 3d4b289..4d23203 100644
--- a/app/src/main/java/be/gyu/android/file/explorer/MainActivity.java
+++ b/app/src/main/java/be/gyu/android/file/explorer/MainActivity.java
@@ -32,6 +32,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public class MainActivity extends AppCompatActivity implements FileAdapter.OnItemClickListener {
@@ -113,6 +114,7 @@ public class MainActivity extends AppCompatActivity implements FileAdapter.OnIte
                         String fullPath = path.equals("/") ? "/" + file.getName() : path + "/" + file.getName();
                         fileList.add(new FileItem(file.getName(), fullPath, file.isDirectory()));
                     }
+                    Collections.sort(fileList);
                 } else {
                      Toast.makeText(this, "Cannot read this directory!", Toast.LENGTH_SHORT).show();
                 }
@@ -154,6 +156,7 @@ public class MainActivity extends AppCompatActivity implements FileAdapter.OnIte
                 for (File file : files) {
                     fileList.add(new FileItem(file.getName(), file.getAbsolutePath(), file.isDirectory()));
                 }
+                Collections.sort(fileList);
             } else {
                 Toast.makeText(this, "Cannot read this directory!", Toast.LENGTH_SHORT).show();
             }