chore: add region tags to 6 samples (#1552)

ApiDemos/java/app/src/gms/java/com/example/mapdemo/AdvancedMarkersDemoActivity.java

@@ -35,6 +35,7 @@
  * The following sample showcases how to create Advanced Markers, and use all their customization
  * possibilities.
  */
+// [START maps_android_sample_marker_advanced]
 public class AdvancedMarkersDemoActivity extends AppCompatActivity implements OnMapReadyCallback {
 
     private static final LatLng SINGAPORE = new LatLng(1.3521, 103.8198);
@@ -135,3 +136,4 @@ public void onMapReady(GoogleMap map) {
         Marker marker5 = map.addMarker(advancedMarkerOptions5);
     }
 }
+// [END maps_android_sample_marker_advanced]

ApiDemos/java/app/src/gms/java/com/example/mapdemo/EventsDemoActivity.java

@@ -31,6 +31,7 @@
 /**
  * This shows how to listen to some {@link GoogleMap} events.
  */
+// [START maps_android_sample_events]
 public class EventsDemoActivity extends AppCompatActivity
         implements OnMapClickListener, OnMapLongClickListener, OnCameraIdleListener,
         OnMapReadyCallback {
@@ -75,3 +76,4 @@ public void onCameraIdle() {
         cameraTextView.setText(map.getCameraPosition().toString());
     }
 }
+// [END maps_android_sample_events]

ApiDemos/java/app/src/gms/java/com/example/mapdemo/MarkerDemoActivity.java

@@ -64,6 +64,7 @@
 /**
  * This shows how to place markers on a map.
  */
+// [START maps_android_sample_marker]
 public class MarkerDemoActivity extends AppCompatActivity implements
         OnMarkerClickListener,
         OnInfoWindowClickListener,
@@ -505,3 +506,4 @@ public void onMarkerDrag(Marker marker) {
     }
 
 }
+// [END maps_android_sample_marker]

ApiDemos/java/app/src/gms/java/com/example/mapdemo/MyLocationDemoActivity.java

@@ -41,6 +41,7 @@
  * android.Manifest.permission#ACCESS_COARSE_LOCATION} are requested at run time. If either
  * permission is not granted, the Activity is finished with an error message.
  */
+// [START maps_android_sample_my_location]
 public class MyLocationDemoActivity extends AppCompatActivity
     implements
     OnMyLocationButtonClickListener,
@@ -158,3 +159,4 @@ private void showMissingPermissionError() {
     }
 
 }
+// [END maps_android_sample_my_location]

ApiDemos/java/app/src/gms/java/com/example/mapdemo/PolygonDemoActivity.java

@@ -47,6 +47,7 @@
 /**
  * This shows how to draw polygons on a map.
  */
+// [START maps_android_sample_polygons]
 public class PolygonDemoActivity extends AppCompatActivity
         implements OnSeekBarChangeListener, OnItemSelectedListener, OnMapReadyCallback {
 
@@ -89,7 +90,6 @@ public class PolygonDemoActivity extends AppCompatActivity
             R.string.pattern_dotted,
             R.string.pattern_mixed,
     };
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -131,6 +131,7 @@ protected void onCreate(Bundle savedInstanceState) {
                 (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
         mapFragment.getMapAsync(this);
     }
+    // [START_EXCLUDE silent]
 
     private String[] getResourceStrings(int[] resourceIds) {
         String[] strings = new String[resourceIds.length];
@@ -139,6 +140,7 @@ private String[] getResourceStrings(int[] resourceIds) {
         }
         return strings;
     }
+    // [END_EXCLUDE]
 
     @Override
     public void onMapReady(GoogleMap map) {
@@ -186,6 +188,7 @@ public void onPolygonClick(Polygon polygon) {
         });
     }
 
+    // [START_EXCLUDE silent]
     /**
      * Creates a List of LatLngs that form a rectangle with the given dimensions.
      */
@@ -286,4 +289,6 @@ public void toggleClickability(View view) {
             mutablePolygon.setClickable(((CheckBox) view).isChecked());
         }
     }
-}
+    // [END_EXCLUDE]
+}
+// [END maps_android_sample_polygons]

ApiDemos/java/app/src/gms/java/com/example/mapdemo/polyline/PolylineDemoActivity.java → ApiDemos/java/app/src/gms/java/com/example/mapdemo/PolylineDemoActivity.java

@@ -54,6 +54,7 @@
 /**
  * This shows how to draw polylines on a map.
  */
+// [START maps_android_sample_polylines]
 public class PolylineDemoActivity extends AppCompatActivity
         implements OnSeekBarChangeListener, OnItemSelectedListener, OnMapReadyCallback {
 
@@ -160,6 +161,7 @@ protected void onCreate(Bundle savedInstanceState) {
                 (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
         mapFragment.getMapAsync(this);
     }
+    // [START_EXCLUDE silent]
 
     private String[] getResourceStrings(int[] resourceIds) {
         String[] strings = new String[resourceIds.length];
@@ -168,6 +170,7 @@ private String[] getResourceStrings(int[] resourceIds) {
         }
         return strings;
     }
+    // [END_EXCLUDE]
 
     @Override
     public void onMapReady(GoogleMap map) {
@@ -219,6 +222,7 @@ public void onPolylineClick(Polyline polyline) {
         });
     }
 
+    // [START_EXCLUDE silent]
     private Cap getSelectedCap(int pos) {
         int id = CAP_TYPE_NAME_RESOURCE_IDS[pos];
         if (id == R.string.cap_butt) {
@@ -319,4 +323,6 @@ public void toggleClickability(View view) {
             mutablePolyline.setClickable(((CheckBox) view).isChecked());
         }
     }
-}
+    // [END_EXCLUDE]
+}
+// [END maps_android_sample_polylines]

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/AdvancedMarkersDemoActivity.kt

@@ -46,6 +46,7 @@ private val TAG = AdvancedMarkersDemoActivity::class.java.name
  * The following sample showcases how to create Advanced Markers, and use all their customization
  * possibilities.
  */
+// [START maps_android_sample_marker_advanced]
 class AdvancedMarkersDemoActivity : AppCompatActivity(), OnMapReadyCallback {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -136,4 +137,5 @@ class AdvancedMarkersDemoActivity : AppCompatActivity(), OnMapReadyCallback {
 
         val marker5: Marker? = map.addMarker(advancedMarkerOptions5)
     }
-}
+}
+// [END maps_android_sample_marker_advanced]

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/EventsDemoActivity.kt

@@ -25,6 +25,7 @@ import com.google.android.gms.maps.model.LatLng
 /**
  * This shows how to listen to some [GoogleMap] events.
  */
+// [START maps_android_sample_events]
 class EventsDemoActivity : AppCompatActivity(), OnMapClickListener,
     OnMapLongClickListener, OnCameraIdleListener, OnMapReadyCallback {
 
@@ -58,7 +59,8 @@ class EventsDemoActivity : AppCompatActivity(), OnMapClickListener,
     }
 
     override fun onCameraIdle() {
-        if(!::map.isInitialized) return
+        if (!::map.isInitialized) return
         cameraTextView.text = map.cameraPosition.toString()
     }
-}
+}
+// [END maps_android_sample_events]

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/MarkerDemoActivity.kt

@@ -61,6 +61,7 @@ import java.util.Random
 /**
  * This shows how to place markers on a map.
  */
+// [START maps_android_sample_marker]
 class MarkerDemoActivity :
         AppCompatActivity(),
         OnMarkerClickListener,
@@ -478,6 +479,7 @@ class MarkerDemoActivity :
         }
     }
 }
+// [END maps_android_sample_marker]
 
 /**
  * This stores the details of a place that used to draw a marker

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/MyLocationDemoActivity.kt

@@ -37,6 +37,7 @@ import com.google.android.gms.maps.SupportMapFragment
  * Permission for [Manifest.permission.ACCESS_FINE_LOCATION] and [Manifest.permission.ACCESS_COARSE_LOCATION]
  * are requested at run time. If either permission is not granted, the Activity is finished with an error message.
  */
+// [START maps_android_sample_my_location]
 class MyLocationDemoActivity : AppCompatActivity(),
     OnMyLocationButtonClickListener,
     OnMyLocationClickListener, OnMapReadyCallback,
@@ -183,4 +184,5 @@ class MyLocationDemoActivity : AppCompatActivity(),
          */
         private const val LOCATION_PERMISSION_REQUEST_CODE = 1
     }
-}
+}
+// [END maps_android_sample_my_location]

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/PolygonDemoActivity.kt

@@ -82,6 +82,7 @@ class PolygonDemoActivity :
     private val patternTypeNameResourceIds = intArrayOf(R.string.pattern_solid, // Default
             R.string.pattern_dashed, R.string.pattern_dotted, R.string.pattern_mixed)
 
+    // [START maps_android_sample_polygons]
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.polygon_demo)
@@ -128,10 +129,12 @@ class PolygonDemoActivity :
         val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment
         mapFragment.getMapAsync(this)
     }
+    // [START_EXCLUDE silent]
 
     private fun getResourceStrings(resourceIds: IntArray): List<String> {
         return resourceIds.map { getString(it) }
     }
+    // [END_EXCLUDE]
 
     override fun onMapReady(googleMap: GoogleMap) {
 
@@ -184,6 +187,7 @@ class PolygonDemoActivity :
         }
 
     }
+    // [END maps_android_sample_polygons]
 
     /**
      * Creates a List of LatLngs that form a rectangle with the given dimensions.

ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/polyline/PolylineDemoActivity.kt → ApiDemos/kotlin/app/src/gms/java/com/example/kotlindemos/PolylineDemoActivity.kt

@@ -108,6 +108,7 @@ class PolylineDemoActivity :
                                                         R.string.pattern_dotted,
                                                         R.string.pattern_mixed)
 
+    // [START maps_android_sample_polylines]
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.polyline_demo)
@@ -156,10 +157,12 @@ class PolylineDemoActivity :
         val mapFragment = supportFragmentManager.findFragmentById(R.id.map) as SupportMapFragment
         mapFragment.getMapAsync(this)
     }
+    // [START_EXCLUDE silent]
 
     private fun getResourceStrings(resourceIds: IntArray): List<String> {
         return resourceIds.map { getString(it) }
     }
+    // [END_EXCLUDE]
 
     override fun onMapReady(googleMap: GoogleMap) {
         googleMap
@@ -215,6 +218,7 @@ class PolylineDemoActivity :
             view -> mutablePolyline.isClickable = (view as CheckBox).isChecked
         }
     }
+    // [END maps_android_sample_polylines]
 
     private fun getSelectedCap(pos: Int): Cap? {
         return when (capTypeNameResourceIds[pos]) {