[google_maps_flutter] Custom icons do not work on iOS

[sam-toon]

Steps to Reproduce

I am using google_maps_flutter and want to use a custom icon for the marker. This works on Android, but on iOS it just displays the default marker. I get the following messages in the log when I click on the button to add the marker.

Sample code is supplied below - you will need to provide a bitmap file for the marker.

This is with google_maps_flutter version 0.3.0+1

I have tried the dev and master channels and the problem still exists.

This works in google_map_flutter 0.2.0, when the markers were part of the map controller.

Logs

[+11552 ms] [DEVICE LOG] 2019-02-28 12:41:37.702608+0000  localhost Runner[92988]: (CoreUI) [com.apple.coreui:framework] CUICatalog:
Invalid asset name supplied: '(null)'
[        ] [DEVICE LOG] 2019-02-28 12:41:37.702658+0000  localhost Runner[92988]: (CoreUI) [com.apple.coreui:framework] CUICatalog:
Invalid asset name supplied: '(null)'
[        ] [DEVICE LOG] 2019-02-28 12:41:37.703070+0000  localhost Runner[92988]: (CoreUI) [com.apple.coreui:framework] CUIThemeStore:
No theme registered with id=0

Code

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Google Maps Demo',
      home: MapSample(),
    );
  }
}

class MapSample extends StatefulWidget {
  @override
  State<MapSample> createState() => MapSampleState();
}

class MapSampleState extends State<MapSample> {
  Completer<GoogleMapController> _controller = Completer();
  Map<MarkerId, Marker> markers = <MarkerId, Marker>{};

  static final CameraPosition _kGooglePlex = CameraPosition(
    target: LatLng(37.42796133580664, -122.085749655962),
    zoom: 14.4746,
  );

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      body: GoogleMap(
        mapType: MapType.hybrid,
        initialCameraPosition: _kGooglePlex,
        markers: Set<Marker>.of(markers.values),
        onMapCreated: (GoogleMapController controller) {
          _controller.complete(controller);
        },
      ),
      floatingActionButton: FloatingActionButton.extended(
        onPressed: _addMarker,
        label: Text('Add Marker'),
        icon: Icon(Icons.place),
      ),
    );
  }

  Future<void> _addMarker() async {
    //final GoogleMapController controller = await _controller.future;
    final MarkerId markerId = MarkerId('test_marker');
    final Marker marker = Marker(
      markerId: markerId,
      anchor: Offset(0.5, 0.5),
      icon: BitmapDescriptor.fromAsset('assets/marker.png'),
      position: LatLng(
        37.42796133580664,
        -122.085749655962,
      ),
      infoWindow: InfoWindow.noText,
      zIndex: 5,
    );

    setState(() {
      markers[markerId] = marker;
    });
  }
}

[✓] Flutter (Channel stable, v1.2.1, on Mac OS X 10.14.3 18D109, locale en-GB)
    • Flutter version 1.2.1 at /Users/samtoon/flutter
    • Framework revision 8661d8aecd (13 days ago), 2019-02-14 19:19:53 -0800
    • Engine revision 3757390fa4
    • Dart version 2.1.2 (build 2.1.2-dev.0.0 0a7dcf17eb)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/samtoon/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = /Users/samtoon/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)
    • All Android licenses accepted.

[!] iOS toolchain - develop for iOS devices (Xcode 10.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.1, Build version 10B61
    ✗ Verify that all connected devices have been paired with this computer in Xcode.
      If all devices have been paired, libimobiledevice and ideviceinstaller may require updating.
      To update with Brew, run:
        brew update
        brew uninstall --ignore-dependencies libimobiledevice
        brew uninstall --ignore-dependencies usbmuxd
        brew install --HEAD usbmuxd
        brew unlink usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    • ios-deploy 1.9.4
    • CocoaPods version 1.6.0.rc.2

[✓] Android Studio (version 3.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 33.3.1
    • Dart plugin version 182.5215
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[✓] VS Code (version 1.31.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.24.0

[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.

[iskakaushik]

Hi @sam-toon, thanks for flagging this. I will take a look.

[iskakaushik]

Will be addressed in flutter/plugins#1294

[iskakaushik]

This is addressed by 0.3.0+2. Please try that version. Thanks!

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.