Some (probably) optimizations and added swiping up from home screen to get to app menu.

app/src/main/java/eu/ottop/yamlauncher/AppMenuActivity.kt

@@ -17,6 +17,7 @@ import android.widget.LinearLayout
 import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
+import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import eu.ottop.yamlauncher.databinding.ActivityAppMenuBinding
@@ -80,7 +81,6 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
         actionMenuLayout: LinearLayout,
         editView: LinearLayout
     ) {
-        // Handle the long click action here, for example, show additional options or information about the app
         textView.visibility = View.INVISIBLE
         actionMenuLayout.visibility = View.VISIBLE
         val mainActivity = launcherApps.getActivityList(appInfo.applicationInfo.packageName, userHandle).firstOrNull()
@@ -102,6 +102,7 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
 
             override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                 filterItems(searchView.text.toString())
+
             }
 
             override fun afterTextChanged(s: Editable?) {
@@ -111,26 +112,31 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
     }
 
     private fun filterItems(query: String?) {
-        val cleanQuery = query?.replace("[^a-zA-Z0-9]".toRegex(), "")
+        CoroutineScope(Dispatchers.Default).launch {
+            val cleanQuery = query?.clean()
             filteredApps.clear()
 
             if (cleanQuery.isNullOrEmpty()) {
                 filteredApps.addAll(installedApps)
-        }
-
-        else {
+            } else {
                 installedApps.forEach {
-                val cleanItemText = it.first.applicationInfo.loadLabel(packageManager).replace("[^a-zA-Z0-9]".toRegex(), "")
-                if (cleanItemText.contains(cleanQuery, ignoreCase=true)) {
+                    val cleanItemText = sharedPreferenceManager.getAppName(this@AppMenuActivity, it.first.applicationInfo.packageName, it.second.second, it.first.applicationInfo.loadLabel(packageManager)).toString().clean()
+                    if (cleanItemText.contains(cleanQuery, ignoreCase = true)) {
                         filteredApps.add(it)
                     }
                 }
             }
-
+            withContext(Dispatchers.Main) {
                 adapter.updateApps(filteredApps)
+            }
+        }
 
     }
 
+    fun String.clean(): String {
+        return this.replace("[^a-zA-Z0-9]".toRegex(), "")
+    }
+
     private fun getInstalledApps(): List<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>> {
         val allApps = mutableListOf<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>>()
         val launcherApps = getSystemService(LAUNCHER_APPS_SERVICE) as LauncherApps
@@ -160,10 +166,11 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
     }
 
     private fun startTask() {
-        job = CoroutineScope(Dispatchers.IO).launch {
+        job = CoroutineScope(Dispatchers.Default).launch {
             while (true) {
-                if (!listsEqual(installedApps, getInstalledApps())) {
-                    installedApps = getInstalledApps()
+                val updatedApps = getInstalledApps()
+                if (!listsEqual(installedApps, updatedApps)) {
+                    installedApps = updatedApps
                     withContext(Dispatchers.Main) {
                         adapter.updateApps(installedApps)
                     }
@@ -174,7 +181,7 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
     }
 
     fun manualRefreshApps() {
-        CoroutineScope(Dispatchers.IO).launch {
+        CoroutineScope(Dispatchers.Default).launch {
             installedApps = getInstalledApps()
             withContext(Dispatchers.Main) {
                 adapter.updateApps(installedApps)
@@ -198,3 +205,21 @@ class AppMenuActivity : AppCompatActivity(), AppMenuAdapter.OnItemClickListener,
     }
 
 }
+
+class AppMenuDiffCallback(
+    private val oldList: List<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>>,
+    private val newList: List<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>>
+) : DiffUtil.Callback() {
+
+    override fun getOldListSize(): Int = oldList.size
+    override fun getNewListSize(): Int = newList.size
+
+    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        return oldList[oldItemPosition].first.componentName == newList[newItemPosition].first.componentName
+    }
+
+    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        // If the items are the same, no need to update
+        return oldList[oldItemPosition] == newList[newItemPosition]
+    }
+}

app/src/main/java/eu/ottop/yamlauncher/AppMenuAdapter.kt

@@ -12,9 +12,10 @@ import android.widget.FrameLayout
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.appcompat.widget.AppCompatButton
+import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
 
-class AppMenuAdapter(private val activity: AppMenuActivity, private var apps: List<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>>, private val itemClickListener: OnItemClickListener, private val itemLongClickListener: OnItemLongClickListener) :
+class AppMenuAdapter(private val activity: AppMenuActivity, var apps: List<Pair<LauncherActivityInfo, Pair<UserHandle, Int>>>, private val itemClickListener: OnItemClickListener, private val itemLongClickListener: OnItemLongClickListener) :
     RecyclerView.Adapter<AppMenuAdapter.AppViewHolder>() {
 
         private val sharedPreferenceManager = SharedPreferenceManager()

app/src/main/java/eu/ottop/yamlauncher/MainActivity.kt

@@ -2,6 +2,8 @@ package eu.ottop.yamlauncher
 
 import android.content.Intent
 import android.os.Bundle
+import android.view.GestureDetector
+import android.view.MotionEvent
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import eu.ottop.yamlauncher.databinding.ActivityMainBinding
@@ -9,6 +11,7 @@ import eu.ottop.yamlauncher.databinding.ActivityMainBinding
 class MainActivity : AppCompatActivity() {
 
     private lateinit var binding: ActivityMainBinding
+    private lateinit var gestureDetector: GestureDetector
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -16,9 +19,40 @@ class MainActivity : AppCompatActivity() {
         setContentView(binding.root)
         setSupportActionBar(null)
 
+        gestureDetector = GestureDetector(this, GestureListener())
+
     }
 
-    fun openAppMenuActivity(view: View) {
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        gestureDetector.onTouchEvent(event)
+        return super.onTouchEvent(event)
+    }
+
+    inner class GestureListener : GestureDetector.SimpleOnGestureListener() {
+        override fun onFling(
+            e1: MotionEvent?,
+            e2: MotionEvent,
+            velocityX: Float,
+            velocityY: Float
+        ): Boolean {
+            // Detect swipe up gesture
+            if (e1 != null) {
+                val deltaY = e2.y - e1.y
+                if (deltaY < -SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
+                    openAppMenuActivity()
+                    return true
+                }
+            }
+            return false
+        }
+
+    }
+    companion object {
+        private const val SWIPE_THRESHOLD = 100
+        private const val SWIPE_VELOCITY_THRESHOLD = 100
+    }
+
+    fun openAppMenuActivity() {
         startActivity(Intent(this, AppMenuActivity::class.java))
     }
 

app/src/main/res/layout/activity_main.xml

@@ -24,13 +24,5 @@
         android:fontFamily= "@null"
         android:textAppearance= "@android:style/TextAppearance.DeviceDefault" />
 
-    <androidx.appcompat.widget.AppCompatButton
-        android:id="@+id/button"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_weight="0.1"
-        android:onClick="openAppMenuActivity"
-        android:text="Button"
-        android:textAppearance="@android:style/TextAppearance.DeviceDefault" />
 </LinearLayout>