From 128d07b93c0b7af683f0d6e8a78fa2eeca43d97f Mon Sep 17 00:00:00 2001
From: jzhao234 <jzhao1155@gmail.com>
Date: Wed, 18 Feb 2026 15:20:56 -0500
Subject: [PATCH] finished lab activity

---
 .../java/edu/temple/namelist/CustomAdapter.kt |  2 +-
 .../java/edu/temple/namelist/MainActivity.kt  | 19 +++++++++++++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/app/src/main/java/edu/temple/namelist/CustomAdapter.kt b/app/src/main/java/edu/temple/namelist/CustomAdapter.kt
index 0288b82..267216c 100644
--- a/app/src/main/java/edu/temple/namelist/CustomAdapter.kt
+++ b/app/src/main/java/edu/temple/namelist/CustomAdapter.kt
@@ -10,7 +10,7 @@ class CustomAdapter(private val names: List<String>, private val context: Contex
 
     // How many items are in the collection
     override fun getCount(): Int {
-        return 5
+        return names.size
     }
 
     // Fetch an item from the collection
diff --git a/app/src/main/java/edu/temple/namelist/MainActivity.kt b/app/src/main/java/edu/temple/namelist/MainActivity.kt
index f3a49f5..1a758ba 100644
--- a/app/src/main/java/edu/temple/namelist/MainActivity.kt
+++ b/app/src/main/java/edu/temple/namelist/MainActivity.kt
@@ -21,6 +21,7 @@ class MainActivity : AppCompatActivity() {
 
         val spinner = findViewById<Spinner>(R.id.spinner)
         val nameTextView = findViewById<TextView>(R.id.textView)
+        val deleteButton = findViewById<Button>(R.id.deleteButton)
 
         with (spinner) {
             adapter = CustomAdapter(names, this@MainActivity)
@@ -36,9 +37,23 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
-        findViewById<View>(R.id.deleteButton).setOnClickListener {
-            (names as MutableList).removeAt(spinner.selectedItemPosition)
+        deleteButton.setOnClickListener {
+            // (names as MutableList).removeAt(spinner.selectedItemPosition)
+            // (spinner.adapter as BaseAdapter).notifyDataSetChanged()
+
+            val oldPos = spinner.selectedItemPosition
+
+            (names as MutableList).removeAt(oldPos)
             (spinner.adapter as BaseAdapter).notifyDataSetChanged()
+
+            if (names.isNotEmpty()) {
+                val newPos = oldPos.coerceAtMost(names.lastIndex)
+                spinner.setSelection(newPos, false)
+                nameTextView.text = names[newPos]
+            } else {
+                nameTextView.text = ""
+                deleteButton.isEnabled = false
+            }
         }
 
     }