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2025-05-14 23:24:46 +00:00 · 2021-01-31 11:05:37 +01:00 · 2021-01-31 11:05:37 +01:00 · 4c21152830
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+# Maps Activity
+
+[Google Maps Docs](https://developers.google.com/maps/documentation/android-sdk/intro)
+
+Activity sould be **Google Maps Activity**.
+
+In `google_maps_api.xml`:
+
+```xml
+<resources>
+    <string name="google_maps_key" templateMergeStartegy="preserve", translateble="false">API_KEY</string>
+</resources>
+```
+
+## Activity Layout (xml)
+
+```xml
+<!-- a fragment to contain the map -->
+<fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:map="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/<fragment_id>"
+    android:name="com.google.android.gms.maps.SupportMapFragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".<Activity>" />
+```
+
+## Activity Class (kotlin)
+
+```kotlin
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+
+import com.google.android.gms.maps.CameraUpdateFactory
+import com.google.android.gms.maps.GoogleMap
+import com.google.android.gms.maps.OnMapReadyCallback
+import com.google.android.gms.maps.SupportMapFragment
+import com.google.android.gms.maps.model.LatLng
+import com.google.android.gms.maps.model.Marker
+import com.google.android.gms.maps.model.MarkerOptions
+
+class MapsActivity : AppCompatActivity(), OnMapReadyCallback,
+        GoogleMap.OnInfoWindowClickListener,
+        GoogleMap.OnMarkerClickListener,
+        GoogleMap.OnCameraIdleListener{
+
+    private lateinit var mMap: GoogleMap  // declare but not valorize
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.<activity_xml>)
+
+        // add the map to a fragment
+        val mapFragment = supportFragmentManager.findFragmentById(R.id.<fragment_id>) as SupportMapFragment
+        mapFragment.getMapAsync(this)
+
+    }
+
+    override fun onMapReady(googleMap: GoogleMap) {
+        mMap = googleMap
+        mMap.setOnMarkerClickListener(this)
+        mMap.setOnInfoWindowClickListener(this)
+
+        // Add a marker and move the camera
+        val location = LatLng(-34.0, 151.0)  // set loaction with latitude and longitude
+        mMap.addMarker(MarkerOptions().position(location).title("Marker in ..."))  // ad the marker to the map with a name and position
+
+        mMap.moveCamera(CameraUpdateFactory.newLatLng(location))  // move camera to the marker
+    }
+
+    override fun onInfoWindowClick(p0: Marker?) {
+
+    }
+
+    override fun onMarkerClick(p0: Marker?): Boolean {
+
+    }
+
+    override fun onCameraIdle() {
+
+    }
+}
+```