[android] - add bulk addImages api on MapboxMap

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

@@ -0,0 +1,17 @@
+package com.mapbox.mapboxsdk.maps;
+
+class Image {
+  private final byte[] buffer;
+  private final float pixelRatio;
+  private final String name;
+  private final int width;
+  private final int height;
+
+  public Image(byte[] buffer, float pixelRatio, String name, int width, int height) {
+    this.buffer = buffer;
+    this.pixelRatio = pixelRatio;
+    this.name = name;
+    this.width = width;
+    this.height = height;
+  }
+}

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

@@ -47,6 +47,7 @@ import com.mapbox.services.commons.geojson.Feature;
 import com.mapbox.services.commons.geojson.Geometry;
 
 import java.lang.reflect.ParameterizedType;
+import java.util.HashMap;
 import java.util.List;
 
 import timber.log.Timber;
@@ -466,6 +467,13 @@ public final class MapboxMap {
     nativeMapView.addImage(name, image);
   }
 
+  /**
+   * Adds an images to be used in the map's style
+   */
+  public void addImages(@NonNull HashMap<String, Bitmap> images) {
+    nativeMapView.addImages(images);
+  }
+
   /**
    * Removes an image from the map's style
    *
@@ -1674,9 +1682,9 @@ public final class MapboxMap {
   /**
    * Get a camera position that fits a provided shape with a given bearing and padding.
    *
-   * @param geometry     the geometry to constrain the map with
-   * @param bearing      the bearing at which to compute the geometry's bounds
-   * @param padding      the padding to apply to the bounds
+   * @param geometry the geometry to constrain the map with
+   * @param bearing  the bearing at which to compute the geometry's bounds
+   * @param padding  the padding to apply to the bounds
    * @return the camera position that fits the bounds and padding
    */
   public CameraPosition getCameraForGeometry(Geometry geometry, double bearing, int[] padding) {

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

@@ -4,6 +4,7 @@ import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.PointF;
 import android.graphics.RectF;
+import android.os.AsyncTask;
 import android.support.annotation.IntRange;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
@@ -34,7 +35,9 @@ import com.mapbox.services.commons.geojson.Geometry;
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import timber.log.Timber;
 
@@ -753,6 +756,7 @@ final class NativeMapView {
     if (isDestroyedOn("addImage")) {
       return;
     }
+
     // Check/correct config
     if (image.getConfig() != Bitmap.Config.ARGB_8888) {
       image = image.copy(Bitmap.Config.ARGB_8888, false);
@@ -769,6 +773,14 @@ final class NativeMapView {
     nativeAddImage(name, image.getWidth(), image.getHeight(), pixelRatio, buffer.array());
   }
 
+  public void addImages(@NonNull HashMap<String, Bitmap> bitmapHashMap) {
+    if (isDestroyedOn("addImages")) {
+      return;
+    }
+    //noinspection unchecked
+    new BitmapImageConversionTask(this).execute(bitmapHashMap);
+  }
+
   public void removeImage(String name) {
     if (isDestroyedOn("removeImage")) {
       return;
@@ -1024,6 +1036,8 @@ final class NativeMapView {
   private native void nativeAddImage(String name, int width, int height, float pixelRatio,
                                      byte[] array);
 
+  private native void nativeAddImages(Image[] images);
+
   private native void nativeRemoveImage(String name);
 
   private native Bitmap nativeGetImage(String name);
@@ -1111,4 +1125,55 @@ final class NativeMapView {
 
     });
   }
+
+
+  //
+  // Image conversion
+  //
+
+  private static class BitmapImageConversionTask extends AsyncTask<HashMap<String, Bitmap>, Void, List<Image>> {
+
+    private NativeMapView nativeMapView;
+
+    BitmapImageConversionTask(NativeMapView nativeMapView) {
+      this.nativeMapView = nativeMapView;
+    }
+
+    @Override
+    protected List<Image> doInBackground(HashMap<String, Bitmap>... params) {
+      HashMap<String, Bitmap> bitmapHashMap = params[0];
+
+      List<Image> images = new ArrayList<>();
+      ByteBuffer buffer;
+      String name;
+      Bitmap bitmap;
+
+      for (Map.Entry<String, Bitmap> stringBitmapEntry : bitmapHashMap.entrySet()) {
+        name = stringBitmapEntry.getKey();
+        bitmap = stringBitmapEntry.getValue();
+
+        if (bitmap.getConfig() != Bitmap.Config.ARGB_8888) {
+          bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false);
+        }
+
+        buffer = ByteBuffer.allocate(bitmap.getByteCount());
+        bitmap.copyPixelsToBuffer(buffer);
+
+        float density = bitmap.getDensity() == Bitmap.DENSITY_NONE ? Bitmap.DENSITY_NONE : bitmap.getDensity();
+        float pixelRatio = density / DisplayMetrics.DENSITY_DEFAULT;
+
+        images.add(new Image(buffer.array(), pixelRatio, name, bitmap.getWidth(), bitmap.getHeight()));
+      }
+
+      return images;
+    }
+
+    @Override
+    protected void onPostExecute(List<Image> images) {
+      super.onPostExecute(images);
+      if (nativeMapView != null && !nativeMapView.isDestroyedOn("nativeAddImages")) {
+        nativeMapView.nativeAddImages(images.toArray(new Image[images.size()]));
+      }
+    }
+  }
 }