IndexOutOfBoundsException for MapView in RecyclerView

Question

I'm getting IndexOutOfBoundsException exception when I try to update the adapter containing the MapView.

I'm using example LiteListDemoActivity. Once it's static everything is fine, but when I want to submit an update to the adapter to show a different type of data not map related, then in some rare cases the app crashes.

The beginning of the stack trace is:

java.lang.IndexOutOfBoundsException: 
  at java.util.ArrayList.get (ArrayList.java:437)
  at com.google.maps.api.android.lib6.lite.u.a (u.java:4)
  at com.google.maps.api.android.lib6.lite.x.a (x.java:15)
  at com.google.maps.api.android.lib6.lite.j.onDraw (j.java:48)
  at android.view.View.draw (View.java:21860)
  at android.view.View.buildDrawingCacheImpl (View.java:21129)
  at android.view.View.buildDrawingCache (View.java:20989)
  at android.view.View.updateDisplayListIfDirty (View.java:20705)
  at android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:4535)
  at android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:4507)
  at android.view.View.updateDisplayListIfDirty (View.java:20688)
  at android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:4535)
  at android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:4507)
  at android.view.View.updateDisplayListIfDirty (View.java:20688)
  at android.view.View.draw (View.java:21586)
  at android.view.ViewGroup.drawChild (ViewGroup.java:4551)
  at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4326)
  at androidx.constraintlayout.widget.ConstraintLayout.dispatchDraw (ConstraintLayout.java:2023)
  at android.view.View.updateDisplayListIfDirty (View.java:20719)
  at android.view.View.draw (View.java:21586)
  at android.view.ViewGroup.drawChild (ViewGroup.java:4551)
  at androidx.recyclerview.widget.RecyclerView.drawChild (RecyclerView.java:4820)
  at android.view.ViewGroup.dispatchDraw (ViewGroup.java:4326)
  at android.view.View.draw (View.java:21863)
  at androidx.recyclerview.widget.RecyclerView.draw (RecyclerView.java:4219)

Is it something related to the RecyclerView implementation? I am sharing the adapter from my code. You can find the full implementation in the link above that I shared.

/**
 * Adapter that displays a title and {@link com.google.android.gms.maps.MapView} for each item.
 * The layout is defined in lite_list_demo_row.xml. It contains a MapView
 * that is programatically initialised in
 * {@link #(int, android.view.View, android.view.ViewGroup)}
 */
private class MapAdapter extends RecyclerView.Adapter {

    private NamedLocation[] namedLocations;

    private MapAdapter(NamedLocation[] locations) {
        super();
        namedLocations = locations;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new ViewHolder(LayoutInflater.from(parent.getContext())
                .inflate(R.layout.lite_list_demo_row, parent, false));
    }

    /**
     * This function is called when the user scrolls through the screen and a new item needs
     * to be shown. So we will need to bind the holder with the details of the next item.
     */
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        if (holder == null) {
            return;
        }
        holder.bindView(position);
    }

    @Override
    public int getItemCount() {
        return namedLocations.length;
    }

    /**
     * Holder for Views used in the {@link LiteListDemoActivity.MapAdapter}.
     * Once the  the map field is set, otherwise it is null.
     * When the {@link #onMapReady(com.google.android.gms.maps.GoogleMap)} callback is received and
     * the {@link com.google.android.gms.maps.GoogleMap} is ready, it stored in the {@link #map}
     * field. The map is then initialised with the NamedLocation that is stored as the tag of the
     * MapView. This ensures that the map is initialised with the latest data that it should
     * display.
     */
    class ViewHolder extends RecyclerView.ViewHolder implements OnMapReadyCallback {

        MapView mapView;
        TextView title;
        GoogleMap map;
        View layout;

        private ViewHolder(View itemView) {
            super(itemView);
            layout = itemView;
            mapView = layout.findViewById(R.id.lite_listrow_map);
            title = layout.findViewById(R.id.lite_listrow_text);
            if (mapView != null) {
                // Initialise the MapView
                mapView.onCreate(null);
                // Set the map ready callback to receive the GoogleMap object
                mapView.getMapAsync(this);
            }
        }

        @Override
        public void onMapReady(GoogleMap googleMap) {
            MapsInitializer.initialize(getApplicationContext());
            map = googleMap;
            setMapLocation();
        }

        /**
         * Displays a {@link LiteListDemoActivity.NamedLocation} on a
         * {@link com.google.android.gms.maps.GoogleMap}.
         * Adds a marker and centers the camera on the NamedLocation with the normal map type.
         */
        private void setMapLocation() {
            if (map == null) return;

            NamedLocation data = (NamedLocation) mapView.getTag();
            if (data == null) return;

            // Add a marker for this item and set the camera
            map.moveCamera(CameraUpdateFactory.newLatLngZoom(data.location, 13f));
            map.addMarker(new MarkerOptions().position(data.location));

            // Set the map type back to normal.
            map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        }

        private void bindView(int pos) {
            NamedLocation item = namedLocations[pos];
            // Store a reference of the ViewHolder object in the layout.
            layout.setTag(this);
            // Store a reference to the item in the mapView's tag. We use it to get the
            // coordinate of a location, when setting the map location.
            mapView.setTag(item);
            setMapLocation();
            title.setText(item.name);
        }
    }
}

IndexOutOfBoundsException for MapView in RecyclerView

Answers (1)

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