[android] - expose MapView#setOfflineRegionDefinition

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java

@@ -23,7 +23,6 @@ import android.view.ViewTreeObserver;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.ZoomButtonsController;
-
 import com.mapbox.android.gestures.AndroidGesturesManager;
 import com.mapbox.android.telemetry.AppUserTurnstile;
 import com.mapbox.android.telemetry.Event;
@@ -33,6 +32,8 @@ import com.mapbox.mapboxsdk.BuildConfig;
 import com.mapbox.mapboxsdk.R;
 import com.mapbox.mapboxsdk.annotations.Annotation;
 import com.mapbox.mapboxsdk.annotations.MarkerViewManager;
+import com.mapbox.mapboxsdk.camera.CameraPosition;
+import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.MapboxConstants;
 import com.mapbox.mapboxsdk.constants.Style;
 import com.mapbox.mapboxsdk.maps.renderer.MapRenderer;
@@ -40,9 +41,13 @@ import com.mapbox.mapboxsdk.maps.renderer.glsurfaceview.GLSurfaceViewMapRenderer
 import com.mapbox.mapboxsdk.maps.renderer.textureview.TextureViewMapRenderer;
 import com.mapbox.mapboxsdk.maps.widgets.CompassView;
 import com.mapbox.mapboxsdk.net.ConnectivityReceiver;
+import com.mapbox.mapboxsdk.offline.OfflineRegionDefinition;
+import com.mapbox.mapboxsdk.offline.OfflineTilePyramidRegionDefinition;
 import com.mapbox.mapboxsdk.storage.FileSource;
 import com.mapbox.mapboxsdk.utils.BitmapUtils;
 
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.ref.WeakReference;
@@ -51,9 +56,6 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 
-import javax.microedition.khronos.egl.EGLConfig;
-import javax.microedition.khronos.opengles.GL10;
-
 import static com.mapbox.mapboxsdk.maps.widgets.CompassView.TIME_MAP_NORTH_ANIMATION;
 import static com.mapbox.mapboxsdk.maps.widgets.CompassView.TIME_WAIT_IDLE;
 
@@ -535,6 +537,35 @@ public class MapView extends FrameLayout implements NativeMapView.ViewCallback {
     nativeMapView.setStyleUrl(url);
   }
 
+  /**
+   * Loads a new style from the specified offline region definition and moves the map camera to that region.
+   *
+   * @param definition the offline region definition
+   * @see OfflineRegionDefinition
+   */
+  public void setOfflineRegionDefinition(OfflineRegionDefinition definition) {
+    if (destroyed) {
+      return;
+    }
+
+    OfflineTilePyramidRegionDefinition regionDefinition = (OfflineTilePyramidRegionDefinition) definition;
+    setStyleUrl(regionDefinition.getStyleURL());
+    CameraPosition cameraPosition = new CameraPosition.Builder()
+      .target(regionDefinition.getBounds().getCenter())
+      .zoom(regionDefinition.getMinZoom())
+      .build();
+
+    if (!isMapInitialized()) {
+      mapboxMapOptions.camera(cameraPosition);
+      mapboxMapOptions.minZoomPreference(regionDefinition.getMinZoom());
+      mapboxMapOptions.maxZoomPreference(regionDefinition.getMaxZoom());
+      return;
+    }
+    mapboxMap.moveCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
+    mapboxMap.setMinZoomPreference(regionDefinition.getMinZoom());
+    mapboxMap.setMaxZoomPreference(regionDefinition.getMaxZoom());
+  }
+
   //
   // Rendering
   //

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"