Add activity search to Android test app

platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/FeatureOverviewActivity.kt

@@ -6,9 +6,11 @@ import android.content.pm.PackageInfo
 import android.content.pm.PackageManager
 import android.content.res.Resources.NotFoundException
 import android.os.Bundle
+import android.view.Menu
 import android.view.View
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.SearchView
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -35,6 +37,7 @@ import java.util.*
 class FeatureOverviewActivity : AppCompatActivity() {
     private lateinit var recyclerView: RecyclerView
     private var sectionAdapter: FeatureSectionAdapter? = null
+    private var featureAdapter: FeatureAdapter? = null
     private var features: List<Feature>? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -50,7 +53,7 @@ class FeatureOverviewActivity : AppCompatActivity() {
                 override fun onItemClicked(recyclerView: RecyclerView?, position: Int, view: View?) {
                     if (sectionAdapter!!.isSectionHeaderPosition(position).not()) {
                         val itemPosition = sectionAdapter!!.getConvertedPosition(position)
-                        val feature = features!![itemPosition]
+                        val feature = featureAdapter!!.getItem(itemPosition)
                         startFeature(feature)
                     }
                 }
@@ -86,6 +89,7 @@ class FeatureOverviewActivity : AppCompatActivity() {
         if (featuresList.isNullOrEmpty()) {
             return
         }
+        featureAdapter = FeatureAdapter(features!!)
         val sections: MutableList<FeatureSectionAdapter.Section> = ArrayList()
         var currentCat = ""
         for (i in features!!.indices) {
@@ -95,12 +99,11 @@ class FeatureOverviewActivity : AppCompatActivity() {
                 currentCat = category
             }
         }
-
         sectionAdapter = FeatureSectionAdapter(
             this,
             R.layout.section_main_layout,
             R.id.section_text,
-            FeatureAdapter(features!!)
+            featureAdapter!!
         )
         sectionAdapter!!.setSections(sections.toTypedArray())
         recyclerView.adapter = sectionAdapter
@@ -163,6 +166,56 @@ class FeatureOverviewActivity : AppCompatActivity() {
         }
     }
 
+    // Add SearchView to the app bar
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_feature_overview, menu)
+        val searchItem = menu.findItem(R.id.action_search)
+        val searchView = searchItem.actionView as SearchView
+        searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+            override fun onQueryTextSubmit(query: String?): Boolean {
+                return false // No action on submit
+            }
+
+            override fun onQueryTextChange(newText: String?): Boolean {
+                filterFeatures(newText)
+                return true
+            }
+        })
+        return true
+    }
+
+    // Filter the features based on the search query
+    private fun filterFeatures(query: String?) {
+        val filteredFeatures = if (query.isNullOrEmpty()) {
+            features // Show full list if query is empty
+        } else {
+            features?.filter { it.getLabel().contains(query, ignoreCase = true) }
+        }
+        updateAdapter(filteredFeatures)
+    }
+
+    // Update the adapter with filtered features
+    private fun updateAdapter(filteredFeatures: List<Feature>?) {
+        if (filteredFeatures.isNullOrEmpty()) {
+            featureAdapter?.update(emptyList())
+            sectionAdapter?.setSections(emptyArray())
+            sectionAdapter?.notifyDataSetChanged()
+            return
+        }
+        val sections: MutableList<FeatureSectionAdapter.Section> = ArrayList()
+        var currentCat = ""
+        for (i in filteredFeatures.indices) {
+            val category = filteredFeatures[i].category
+            if (currentCat != category) {
+                sections.add(FeatureSectionAdapter.Section(i, category))
+                currentCat = category
+            }
+        }
+        featureAdapter?.update(filteredFeatures)
+        sectionAdapter?.setSections(sections.toTypedArray())
+        sectionAdapter?.notifyDataSetChanged()
+    }
+
     companion object {
         private const val KEY_STATE_FEATURES = "featureList"
     }

platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/adapter/FeatureAdapter.kt

@@ -12,12 +12,11 @@ import org.maplibre.android.testapp.utils.FontCache
 /**
  * Adapter used for FeatureOverviewActivity.
  *
- *
  * Adapts a Feature to a visual representation to be shown in a RecyclerView.
- *
  */
-class FeatureAdapter(private val features: List<Feature>) :
+class FeatureAdapter(private var features: List<Feature>) :
     RecyclerView.Adapter<FeatureAdapter.ViewHolder>() {
+
     class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
         var labelView: TextView
         var descriptionView: TextView
@@ -32,8 +31,7 @@ class FeatureAdapter(private val features: List<Feature>) :
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view =
-            LayoutInflater.from(parent.context).inflate(R.layout.item_main_feature, parent, false)
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_main_feature, parent, false)
         return ViewHolder(view)
     }
 
@@ -45,4 +43,13 @@ class FeatureAdapter(private val features: List<Feature>) :
     override fun getItemCount(): Int {
         return features.size
     }
+
+    fun update(newFeatures: List<Feature>) {
+        features = newFeatures
+        notifyDataSetChanged()
+    }
+
+    fun getItem(position: Int): Feature {
+        return features[position]
+    }
 }

platform/android/MapLibreAndroidTestApp/src/main/res/drawable-anydpi/ic_search.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#333333"
+    android:alpha="0.6">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
+</vector>

platform/android/MapLibreAndroidTestApp/src/main/res/menu/menu_feature_overview.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_search"
+        android:icon="@drawable/ic_search"
+        android:title="@string/search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="always|collapseActionView" />
+</menu>

platform/android/MapLibreAndroidTestApp/src/main/res/values/strings.xml

@@ -7,4 +7,5 @@
     <string name="category_benchmark">Benchmark</string>
     <string name="activity_benchmark_world_tour">World Tour Benchmark</string>
     <string name="description_world_tour_benchmark">Writes out avg. fps and 1% fps after world tour with .flyTo()</string>
+    <string name="search">Search</string>
 </resources>