From fdc58f04ac750794efd7a45edf73893a0246c5fc Mon Sep 17 00:00:00 2001
From: Andrew Calcutt <acalcutt@techidiots.net>
Date: Thu, 12 Mar 2026 22:34:24 -0400
Subject: [PATCH] Add Style URL Activity to Android Test App (#4170)

---
 .../src/main/AndroidManifest.xml              |  12 +++
 .../activity/style/StyleUrlActivity.kt        | 100 ++++++++++++++++++
 .../main/res/layout/activity_style_url.xml    |  35 ++++++
 .../src/main/res/values/descriptions.xml      |   1 +
 .../src/main/res/values/titles.xml            |   1 +
 5 files changed, 149 insertions(+)
 create mode 100644 platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/style/StyleUrlActivity.kt
 create mode 100644 platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_style_url.xml

diff --git a/platform/android/MapLibreAndroidTestApp/src/main/AndroidManifest.xml b/platform/android/MapLibreAndroidTestApp/src/main/AndroidManifest.xml
index 07215347b..4c2485a78 100644
--- a/platform/android/MapLibreAndroidTestApp/src/main/AndroidManifest.xml
+++ b/platform/android/MapLibreAndroidTestApp/src/main/AndroidManifest.xml
@@ -686,6 +686,18 @@
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value=".activity.FeatureOverviewActivity" />
         </activity>
+        <activity
+            android:name=".activity.style.StyleUrlActivity"
+            android:description="@string/description_style_url"
+            android:exported="true"
+            android:label="@string/activity_style_url">
+            <meta-data
+                android:name="@string/category"
+                android:value="@string/category_style" />
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".activity.FeatureOverviewActivity" />
+        </activity>
         <activity
             android:name=".activity.style.CustomSpriteActivity"
             android:description="@string/description_custom_sprite"
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/style/StyleUrlActivity.kt b/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/style/StyleUrlActivity.kt
new file mode 100644
index 000000000..b53930b93
--- /dev/null
+++ b/platform/android/MapLibreAndroidTestApp/src/main/java/org/maplibre/android/testapp/activity/style/StyleUrlActivity.kt
@@ -0,0 +1,100 @@
+package org.maplibre.android.testapp.activity.style
+
+import android.os.Bundle
+import android.widget.ArrayAdapter
+import android.widget.AutoCompleteTextView
+import android.widget.Button
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import org.maplibre.android.maps.MapLibreMap
+import org.maplibre.android.maps.MapView
+import org.maplibre.android.maps.Style
+import org.maplibre.android.testapp.R
+import org.maplibre.android.testapp.styles.TestStyles
+
+/**
+ * Activity to demonstrate loading a style dynamically from a URL.
+ */
+class StyleUrlActivity : AppCompatActivity() {
+
+    private lateinit var mapView: MapView
+    private var mapLibreMap: MapLibreMap? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_style_url)
+
+        val urlInput = findViewById<AutoCompleteTextView>(R.id.urlAutoCompleteTextView)
+        val loadButton = findViewById<Button>(R.id.loadButton)
+        mapView = findViewById(R.id.mapView)
+        mapView.onCreate(savedInstanceState)
+
+        val styles = arrayOf(
+            TestStyles.DEMOTILES,
+            TestStyles.AMERICANA,
+            TestStyles.OPENFREEMAP_LIBERTY,
+            TestStyles.OPENFREEMAP_BRIGHT,
+            TestStyles.AWS_OPEN_DATA_STANDARD_LIGHT,
+            TestStyles.PROTOMAPS_LIGHT,
+            TestStyles.PROTOMAPS_DARK,
+            TestStyles.PROTOMAPS_GRAYSCALE,
+            TestStyles.PROTOMAPS_WHITE,
+            TestStyles.PROTOMAPS_BLACK
+        )
+        val adapter = ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line, styles)
+        urlInput.setAdapter(adapter)
+
+        urlInput.setOnClickListener {
+            urlInput.showDropDown()
+        }
+
+        mapView.getMapAsync { map ->
+            mapLibreMap = map
+            map.setStyle(Style.Builder().fromUri(urlInput.text.toString()))
+        }
+
+        loadButton.setOnClickListener {
+            val url = urlInput.text.toString()
+            if (url.isNotEmpty()) {
+                mapLibreMap?.setStyle(Style.Builder().fromUri(url)) {
+                    Toast.makeText(this, "Style loaded", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    override fun onStart() {
+        super.onStart()
+        mapView.onStart()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        mapView.onResume()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        mapView.onPause()
+    }
+
+    override fun onStop() {
+        super.onStop()
+        mapView.onStop()
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        mapView.onSaveInstanceState(outState)
+    }
+
+    override fun onLowMemory() {
+        super.onLowMemory()
+        mapView.onLowMemory()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        mapView.onDestroy()
+    }
+}
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_style_url.xml b/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_style_url.xml
new file mode 100644
index 000000000..3fda0c851
--- /dev/null
+++ b/platform/android/MapLibreAndroidTestApp/src/main/res/layout/activity_style_url.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:padding="8dp">
+
+        <AutoCompleteTextView
+            android:id="@+id/urlAutoCompleteTextView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:hint="Enter or pick Style URL"
+            android:inputType="textUri"
+            android:completionThreshold="1"
+            android:text="https://demotiles.maplibre.org/style.json" />
+
+        <Button
+            android:id="@+id/loadButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Load" />
+    </LinearLayout>
+
+    <org.maplibre.android.maps.MapView
+        android:id="@id/mapView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</LinearLayout>
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/res/values/descriptions.xml b/platform/android/MapLibreAndroidTestApp/src/main/res/values/descriptions.xml
index 6e15c6932..fc601258e 100644
--- a/platform/android/MapLibreAndroidTestApp/src/main/res/values/descriptions.xml
+++ b/platform/android/MapLibreAndroidTestApp/src/main/res/values/descriptions.xml
@@ -55,6 +55,7 @@
     <string name="description_visibility_map">Changes visibility of map and view parent</string>
     <string name="description_add_remove_markers">Change Symbol icon when zoom levels changes</string>
     <string name="description_style_file">Use a local file as the style</string>
+    <string name="description_style_url">Load a map style dynamically from a URL</string>
     <string name="description_map_in_dialog">Display a map inside a dialog fragment</string>
     <string name="description_circle_layer">Show bus stops and route in Singapore</string>
     <string name="description_collection_style_change">Verify that updating the GeoJsonSource across style changes allows for smooth transitions</string>
diff --git a/platform/android/MapLibreAndroidTestApp/src/main/res/values/titles.xml b/platform/android/MapLibreAndroidTestApp/src/main/res/values/titles.xml
index 6c35c3e03..f035033b4 100644
--- a/platform/android/MapLibreAndroidTestApp/src/main/res/values/titles.xml
+++ b/platform/android/MapLibreAndroidTestApp/src/main/res/values/titles.xml
@@ -40,6 +40,7 @@
     <string name="activity_circle_layer">Circle layer</string>
     <string name="activity_collection_style_change">Collection updates on style changes</string>
     <string name="activity_style_file">Local Style file</string>
+    <string name="activity_style_url">Style URL</string>
     <string name="activity_geojson_clustering">GeoJson Clustering</string>
     <string name="activity_geojson_realtime">Add live realtime data</string>
     <string name="activity_print">Print a map</string>