[android] - expose MapView#setOfflineRegionDefinition

platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/offline/UpdateMetadataActivity.java

@@ -14,7 +14,7 @@ import android.widget.EditText;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.Toast;
-
+import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.offline.OfflineManager;
 import com.mapbox.mapboxsdk.offline.OfflineRegion;
 import com.mapbox.mapboxsdk.testapp.R;
@@ -27,10 +27,13 @@ import java.util.List;
 /**
  * Test activity showing integration of updating metadata of an OfflineRegion.
  */
-public class UpdateMetadataActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
+public class UpdateMetadataActivity extends AppCompatActivity implements AdapterView.OnItemClickListener,
+  AdapterView.OnItemLongClickListener {
 
   private OfflineRegionMetadataAdapter adapter;
 
+  private MapView mapView;
+
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
@@ -40,6 +43,7 @@ public class UpdateMetadataActivity extends AppCompatActivity implements Adapter
     listView.setAdapter(adapter = new OfflineRegionMetadataAdapter(this));
     listView.setEmptyView(findViewById(android.R.id.empty));
     listView.setOnItemClickListener(this);
+    listView.setOnItemLongClickListener(this);
   }
 
   @Override
@@ -64,6 +68,18 @@ public class UpdateMetadataActivity extends AppCompatActivity implements Adapter
     builder.show();
   }
 
+  @Override
+  public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
+    ViewGroup container = (ViewGroup) findViewById(R.id.container);
+    container.removeAllViews();
+    container.addView(mapView = new MapView(view.getContext()));
+    mapView.setOfflineRegionDefinition(adapter.getItem(position).getDefinition());
+    mapView.onCreate(null);
+    mapView.onStart();
+    mapView.onResume();
+    return true;
+  }
+
   private void updateMetadata(OfflineRegion region, byte[] metadata) {
     region.updateMetadata(metadata, new OfflineRegion.OfflineRegionUpdateMetadataCallback() {
       @Override
@@ -104,6 +120,16 @@ public class UpdateMetadataActivity extends AppCompatActivity implements Adapter
     });
   }
 
+  @Override
+  protected void onDestroy() {
+    super.onDestroy();
+    if (mapView != null) {
+      mapView.onPause();
+      mapView.onStop();
+      mapView.onDestroy();
+    }
+  }
+
   private static class OfflineRegionMetadataAdapter extends BaseAdapter {
 
     private Context context;

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_metadata_update.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
+    android:id="@+id/container"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"