Memory Leak flutter framework iOS - gridview, listview - it IS a bug...

Steps to Reproduce

Code below - the simple introductory app, but with a gridview. There is a Map of a list of URLs. If you check the size of each JPG, it is 115k, 130k.
Well, when I run the app, two things are not happening:
it is not deallocating memory of objects not visible. So memory usage is going crazy. It already starts with 60-100MB (way too much for a simple app like this IMHO) and goes to the point where the app may crash due to OOM. You scroll to the end, memory usage may end up +600MB. I'm running it in debug mode. (is that the reason? Shouldn't be...)
The image size on memory is around 4MB/image, at least. I understand that this is due to rendering of the image. I will drop this down by downloading them, resizing the images beforehand in my server. But even then, not deallocating is huge.
And I have seen this happen in fact with any image. I can post code later, but I have an app with several pages. You push one page, see an image (svg, small in size. But rendered, big). Pop page. That image never gets deallocated. So, memory usage keeps increasing 3-4MB at a time. Should I manually deallocate every Image.network or NetworkImage or etc ... I use?
Shouldn't the framework free this when popping a page?
Cheers, here to help if anything (willing to contribute, I've already posted things on image_picker in the past)

I just tested with Android, garbage collector works in android. Although it goes up a lot, at some point it decides to offload objects, and memory goes from 200-300MB back to 100MB. And when I pop the page, memory is released. So yes, this is a flutter issue on IOS

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: GridView.builder(
          itemCount: marineLifeArray.length,
          gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 2),
          itemBuilder: (BuildContext context, int i) {
            return GestureDetector(
              onTap: () {
                print("TAPPED");
              },
              child: Card(
                  child: Stack(
                children: <Widget>[
                  Container(
                    decoration: BoxDecoration(
                      shape: BoxShape.rectangle,
                      image: DecorationImage(
                          fit: BoxFit.cover,
                          image: NetworkImage(
                            marineLifeArray[i]["photo"],
                          )),
                    ),
                  ),
                  Container(
                    padding: EdgeInsets.all(8),
                    child: Text(
                      "${marineLifeArray[i]["name"]}",
                      style: TextStyle(height: 1.2, fontSize: 10, color: Colors.white, fontWeight: FontWeight.w100),
                    ),
                    color: Color(0xbf000000),
                  ),
                ],
              )),
            );
          }),
    );
  }
}

const String name = "name";
const String site = "site";
const String photo = "photo";
const String type = "type";
const String subtype = "subtype";

List<Map<String, String>> marineLifeArray = [
  {
    name: 'Whale shark',
    site: 'https://reeflifesurvey.com/species/rhincodon-typus',
    photo: 'https://images.reeflifesurvey.com/0/species_86_570f12bd2970e.w1300.h866.jpg',
    type: 'Shark',
    subtype: 'Shark',
  },
  {
    name: 'Hawksbill Turtle',
    site: 'https://reeflifesurvey.com/species/eretmochelys-imbricata/',
    photo: 'https://images.reeflifesurvey.com/0/species_c3_5774942365681.w1300.h866.JPG',
    type: 'Turtle',
    subtype: 'Turtle',
  },
  {
    name: 'Green Turtle',
    site: 'https://reeflifesurvey.com/species/chelonia-mydas/',
    photo: 'https://images.reeflifesurvey.com/0/species_04_574e86d9ddc6c.w1300.h866.jpg',
    type: 'Turtle',
    subtype: 'Turtle',
  },
  {
    name: 'Grey Reef Shark',
    site: 'https://reeflifesurvey.com/species/carcharhinus-amblyrhynchos/',
    photo: 'https://images.reeflifesurvey.com/0/species_78_5704765706b21.w1300.h866.jpg',
    type: 'Shark',
    subtype: 'Shark',
  },
  {
    name: 'Nurse Shark',
    site: 'https://reeflifesurvey.com/species/ginglymostoma-cirratum/',
    photo: 'https://images.reeflifesurvey.com/0/species_8a_582953dfc0b8b.w1300.h866.jpg',
    type: 'Shark',
    subtype: 'Shark',
  },
  {
    name: 'White Tip Reef Shark',
    site: 'https://reeflifesurvey.com/species/triaenodon-obesus/',
    photo: 'https://images.reeflifesurvey.com/0/species_1c_5704a01e5ad90.w1300.h866.jpg',
    type: 'Shark',
    subtype: 'Shark',
  },
  {
    name: 'Sergeant Fish',
    site: 'https://reeflifesurvey.com/species/abudefduf-saxatilis/',
    photo: 'https://images.reeflifesurvey.com/0/species_92_576c98fc7e3e9.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Sergeant Fish'
  },
  {
    name: 'Longfin Bannerfish',
    site: 'https://reeflifesurvey.com/species/heniochus-acuminatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_c4_56e73207418da.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Bannerfish'
  },
  {
    name: 'Singular Bannerfish',
    site: 'https://reeflifesurvey.com/species/heniochus-singularius/',
    photo: 'https://images.reeflifesurvey.com/0/species_16_57bbfb9a6b55e.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Bannerfish'
  },
  {
    name: 'Lionfish',
    site: 'https://reeflifesurvey.com/species/pterois-miles/',
    photo: 'https://images.reeflifesurvey.com/0/species_a1_570ecefec427e.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Lionfish',
  },
  {
    name: 'Red Lionfish',
    site: 'https://reeflifesurvey.com/species/pterois-volitans/',
    photo: 'https://images.reeflifesurvey.com/0/species_15_570edcdedc6e8.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Lionfish'
  },
  {
    name: 'Shaded Batfish',
    site: 'https://reeflifesurvey.com/species/platax-pinnatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_fd_58d8827947d58.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Batfish',
  },
  {
    name: 'Round Batfish',
    site: 'https://reeflifesurvey.com/species/platax-orbicularis/',
    photo: 'https://images.reeflifesurvey.com/0/species_49_576c9f446ae52.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Batfish',
  },
  {
    name: 'Maldives Damselfish',
    site: 'https://reeflifesurvey.com/species/amblyglyphidodon-indicus/',
    photo: 'https://images.reeflifesurvey.com/0/species_a4_57c1456553462.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Damselfish',
  },
  {
    name: 'Yellowtail Damselfish',
    site: 'https://reeflifesurvey.com/species/neopomacentrus-azysron/',
    photo: 'https://images.reeflifesurvey.com/0/species_35_57adb386b3fe3.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Damselfish',
  },
  {
    name: 'Banded Frogfish',
    site: 'https://reeflifesurvey.com/species/halophryne-diemensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_b3_570b4bac198aa.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Frogfish',
  },
  {
    name: 'Eastern Frogfish',
    site: 'https://reeflifesurvey.com/species/batrachomoeus-dubius/',
    photo: 'https://images.reeflifesurvey.com/0/species_00_570b45f42575c.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Frogfish',
  },
  {
    name: 'Zebra Moray',
    site: 'https://reeflifesurvey.com/species/echidna-nebulosa/',
    photo: 'https://images.reeflifesurvey.com/0/species_d2_5705cb696d3d0.w1300.h866.jpg',
    type: 'Moray',
    subtype: 'Moray',
  },
  {
    name: 'Chestnut Moray',
    site: 'https://reeflifesurvey.com/species/gymnothorax-castaneus/',
    photo: 'https://images.reeflifesurvey.com/0/species_c5_57e2262da3196.w1300.h866.JPG',
    type: 'Moray',
    subtype: 'Moray',
  },
  {
    name: 'Honeycomb Moray',
    site: 'https://reeflifesurvey.com/species/gymnothorax-favagineus/',
    photo: 'https://images.reeflifesurvey.com/0/species_50_5706f1102266c.w1300.h866.jpg',
    type: 'Moray',
    subtype: 'Moray',
  },
  {
    name: 'Green Moray',
    site: 'https://reeflifesurvey.com/species/gymnothorax-funebris/',
    photo: 'https://images.reeflifesurvey.com/0/species_6c_582954f05eaf0.w1300.h866.jpg',
    type: 'Moray',
    subtype: 'Moray',
  },
  {
    name: 'Giant Moray',
    site: 'https://reeflifesurvey.com/species/gymnothorax-javanicus/',
    photo: 'https://images.reeflifesurvey.com/0/species_48_5706f8e197fce.w1300.h866.jpg',
    type: 'Moray',
    subtype: 'Moray',
  },
  {
    name: 'Garden Eel',
    site: 'https://reeflifesurvey.com/species/gorgasia-barnesi/',
    photo: 'https://images.reeflifesurvey.com/0/species_ca_58041a9fb15e9.w1300.h866.JPG',
    type: 'Eel',
    subtype: 'Eel',
  },
  {
    name: 'Ribbon Eel',
    site: 'https://reeflifesurvey.com/species/rhinomuraena-quaesita/',
    photo: 'https://images.reeflifesurvey.com/0/species_39_5707289e49bcb.w1300.h866.jpg',
    type: 'Eel',
    subtype: 'Eel',
  },
  {
    name: 'Golden Scorpionfish',
    site: 'https://reeflifesurvey.com/species/parascorpaena-aurita/',
    photo: 'https://images.reeflifesurvey.com/0/species_cb_570dd32a84f77.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Scorpionfish',
  },
  {
    name: 'Leaf Scorpionfish',
    site: 'https://reeflifesurvey.com/species/taenianotus-triacanthus/',
    photo: 'https://images.reeflifesurvey.com/0/species_d2_571429baf3ed7.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Scorpionfish',
  },
  {
    name: 'Papua Scorpionfish',
    site: 'https://reeflifesurvey.com/species/scorpaenopsis-papuensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_22_570f01536f2ed.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Scorpionfish',
  },
  {
    name: 'Reef Scorpionfish',
    site: 'https://reeflifesurvey.com/species/synanceia-verrucosa/',
    photo: 'https://images.reeflifesurvey.com/0/species_bd_570dba2c27ec5.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Scorpionfish',
  },
  {
    name: 'Razorfish',
    site: 'https://reeflifesurvey.com/species/aeoliscus-strigatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_9a_57539da9f360f.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Razorfish',
  },
  {
    name: 'Redbanded Shrimpgoby',
    site: 'https://reeflifesurvey.com/species/amblyeleotris-fasciata/',
    photo: 'https://images.reeflifesurvey.com/0/species_cc_58eee471a9ec0.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Goby',
  },
  {
    name: 'Gorgeous Goby',
    site: 'https://reeflifesurvey.com/species/amblyeleotris-wheeleri/',
    photo: 'https://images.reeflifesurvey.com/0/species_27_57580db0465ef.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Goby',
  },
  {
    name: 'Magnificent Shrimp',
    site: 'https://reeflifesurvey.com/species/ancylomenes-magnificus/',
    photo: 'https://images.reeflifesurvey.com/0/species_55_57d92def934aa.w1300.h866.jpg',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Painted Shrimp',
    site: 'https://reeflifesurvey.com/species/campylonotus-vagans/',
    photo: 'https://images.reeflifesurvey.com/0/species_31_57a126540716d.w1300.h866.JPG',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Mantis Shrimp',
    site: 'https://reeflifesurvey.com/species/odontodactylus-scyllarus/',
    photo: 'https://images.reeflifesurvey.com/0/species_99_57d9342e94a4c.w1300.h866.jpg',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Pederson Cleaner Shrimp',
    site: 'https://reeflifesurvey.com/species/periclimenes-pedersoni/',
    photo: 'https://images.reeflifesurvey.com/0/species_56_57e36be43a23f.w1300.h866.jpg',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Banded Cleaner Shrimp',
    site: 'https://reeflifesurvey.com/species/stenopus-hispidus/',
    photo: 'https://images.reeflifesurvey.com/0/species_11_5744f825e876a.w1300.h866.JPG',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Squat Shrimp',
    site: 'https://reeflifesurvey.com/species/thor-amboinensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_4d_577c79755fb69.w1300.h866.jpg',
    type: 'Shrimp',
    subtype: 'Shrimp',
  },
  {
    name: 'Octopus Ornatus',
    site: 'https://reeflifesurvey.com/species/callistoctopus-ornatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_05_59573150af214.w1300.h866.jpg',
    type: 'Octopus',
    subtype: 'Octopus',
  },
  {
    name: 'Blue Ringed Octopus',
    site: 'https://reeflifesurvey.com/species/hapalochlaena-maculosa/',
    photo: 'https://images.reeflifesurvey.com/0/species_04_572006d177f46.w1300.h866.jpg',
    type: 'Octopus',
    subtype: 'Octopus',
  },
  {
    name: 'Day Octopus',
    site: 'https://reeflifesurvey.com/species/octopus-cyanea/',
    photo: 'https://images.reeflifesurvey.com/0/species_08_578f437da20cb.w1300.h866.jpg',
    type: 'Octopus',
    subtype: 'Octopus',
  },
  {
    name: 'Common Octopus',
    site: 'https://reeflifesurvey.com/species/octopus-vulgaris/',
    photo: 'https://images.reeflifesurvey.com/0/species_07_5738101a97445.w1300.h866.jpg',
    type: 'Octopus',
    subtype: 'Octopus',
  },
  {
    name: 'Manta Ray',
    site: 'https://reeflifesurvey.com/species/manta-birostris',
    photo: 'https://images.reeflifesurvey.com/0/species_8d_5705c04c9922e.w1300.h866.jpg',
    type: 'Ray',
    subtype: 'Manta Ray',
  },
  {
    name: 'Common Cuttlefish',
    site: 'https://reeflifesurvey.com/species/sepia-officinalis/',
    photo: 'https://images.reeflifesurvey.com/0/species_fb_573854b42e14e.w1300.h866.jpg',
    type: 'Cuttlefish',
    subtype: 'Cuttlefish',
  },
  {
    name: 'Broadclub Cuttlefish',
    site: 'https://reeflifesurvey.com/species/sepia-latimanus/',
    photo: 'https://images.reeflifesurvey.com/0/species_28_579550badcd0f.w1300.h866.jpg',
    type: 'Cuttlefish',
    subtype: 'Cuttlefish',
  },
  {
    name: 'White-spotted Eagle Ray',
    site: 'https://reeflifesurvey.com/species/aetobatus-narinari/',
    photo: 'https://images.reeflifesurvey.com/0/species_a9_58294c65a2c62.w1300.h866.jpg',
    type: 'Ray',
    subtype: 'Eagly Ray',
  },
  {
    name: 'Common Eagle Ray',
    site: 'https://reeflifesurvey.com/species/myliobatis-aquila/',
    photo: 'https://images.reeflifesurvey.com/0/species_54_5791a2bb801f0.w1300.h866.JPG',
    type: 'Ray',
    subtype: 'Eagly Ray',
  },
  {
    name: 'Sea Snake',
    site: 'https://reeflifesurvey.com/species/aipysurus-tenuis/',
    photo: 'https://images.reeflifesurvey.com/0/species_4f_5768fa5434877.w1300.h866.jpg',
    type: 'Snake',
    subtype: 'Snake',
  },
  {
    name: 'Mackerel Tuna',
    site: 'https://reeflifesurvey.com/species/euthynnus-affinis/',
    photo: 'https://images.reeflifesurvey.com/0/species_a2_57730df300db5.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Tuna',
  },
  {
    name: 'Bluefin Trevally',
    site: 'https://reeflifesurvey.com/species/caranx-melampygus/',
    photo: 'https://images.reeflifesurvey.com/0/species_31_5a1b88b755d83.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Trevally',
  },
  {
    name: 'Silver Trevally',
    site: 'https://reeflifesurvey.com/species/pseudocaranx-georgianus/',
    photo: 'https://images.reeflifesurvey.com/0/species_ee_573555398a747.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Trevally',
  },
  {
    name: 'Golden Trevally',
    site: 'https://reeflifesurvey.com/species/gnathanodon-speciosus/',
    photo: 'https://images.reeflifesurvey.com/0/species_62_5735516c3db19.w1300.h866.JPG',
    type: 'Fish',
    subtype: 'Trevally',
  },
  {
    name: 'Big Eye Trevally',
    site: 'https://reeflifesurvey.com/species/caranx-sexfasciatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_ec_573537d672b79.w1300.h866.JPG',
    type: 'Fish',
    subtype: 'Trevally',
  },
  {
    name: 'Giant Trevally',
    site: 'https://reeflifesurvey.com/species/caranx-ignobilis/',
    photo: 'https://images.reeflifesurvey.com/0/species_07_5735199e6a719.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Trevally',
  },
  {
    name: 'Yellowtail Barracuda',
    site: 'https://reeflifesurvey.com/species/sphyraena-flavicauda/',
    photo: 'https://images.reeflifesurvey.com/0/species_63_5772fe39415bc.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Barracuda',
  },
  {
    name: 'Barracuda',
    site: 'https://reeflifesurvey.com/species/sphyraena-ensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_c2_57fcd1a0d0706.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Barracuda',
  },
  {
    name: 'Blackfin Barracuda',
    site: 'https://reeflifesurvey.com/species/sphyraena-qenie/',
    photo: 'https://images.reeflifesurvey.com/0/species_84_5a978743a2965.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Barracuda',
  },
  {
    name: 'Great Barracuda',
    site: 'https://reeflifesurvey.com/species/sphyraena-barracuda/',
    photo: 'https://images.reeflifesurvey.com/0/species_fd_5772f875f1a17.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Barracuda',
  },
  {
    name: 'Blackbar Soldierfish',
    site: 'https://reeflifesurvey.com/species/myripristis-jacobus/',
    photo: 'https://images.reeflifesurvey.com/0/species_07_576cb9994d286.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Soldierfish',
  },
  {
    name: 'Big Eye Soldierfish',
    site: 'https://reeflifesurvey.com/species/myripristis-pralinia/',
    photo: 'https://images.reeflifesurvey.com/0/species_d5_570c40091164d.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Soldierfish',
  },
  {
    name: 'Cardinalfish',
    site: 'https://reeflifesurvey.com/species/apogon-victoriae/',
    photo: 'https://images.reeflifesurvey.com/0/species_40_578844ec219fc.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Cardinalfish',
  },
  {
    name: 'Pink Cardinalfish',
    site: 'https://reeflifesurvey.com/species/apogon-pacificus/',
    photo: 'https://images.reeflifesurvey.com/0/species_68_578443b1a88f8.w1300.h866.JPG',
    type: 'Fish',
    subtype: 'Cardinalfish',
  },
  {
    name: 'Tryons Nudibranch',
    site: 'https://reeflifesurvey.com/species/risbecia-tryoni/',
    photo: 'https://images.reeflifesurvey.com/0/species_df_578c3b6907b7a.w1300.h866.JPG',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Red Lined Flabellina',
    site: 'https://reeflifesurvey.com/species/flabellina-rubrolineata/',
    photo: 'https://images.reeflifesurvey.com/0/species_f6_5716dea56c5ed.w1300.h866.jpg',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Magnificent Nudibranch',
    site: 'https://reeflifesurvey.com/species/chromodoris-magnifica/',
    photo: 'https://images.reeflifesurvey.com/0/species_27_578c2e4654607.w1300.h866.JPG',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Black Margined Nudibranch',
    site: 'https://reeflifesurvey.com/species/doriprismatica-atromarginata/',
    photo: 'https://images.reeflifesurvey.com/0/species_52_578ec487e4a44.w1300.h866.jpg',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Gem Nudibranch',
    site: 'https://reeflifesurvey.com/species/goniobranchus-geminus/',
    photo: 'https://images.reeflifesurvey.com/0/species_bd_5792e968a35dc.w1300.h866.jpg',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Obscure Nudibranch',
    site: 'https://reeflifesurvey.com/species/hypselodoris-obscura/',
    photo: 'https://images.reeflifesurvey.com/0/species_e2_575b3f295239d.w1300.h866.JPG',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Heavenly Phyllidia',
    site: 'https://reeflifesurvey.com/species/phyllidia-coelestis/',
    photo: 'https://images.reeflifesurvey.com/0/species_1c_5791e0eb9a92f.w1300.h866.jpg',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Danielles Thurunna',
    site: 'https://reeflifesurvey.com/species/thorunna-daniellae/',
    photo: 'https://images.reeflifesurvey.com/0/species_ba_5744f23de1818.w1300.h866.JPG',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Spanish Dancer',
    site: 'https://reeflifesurvey.com/species/hexabranchus-sanguineus/',
    photo: 'https://images.reeflifesurvey.com/0/species_a8_5772f286c4928.w1300.h866.JPG',
    type: 'Nudibranch',
    subtype: 'Nudibranch',
  },
  {
    name: 'Yellowfin Parrotfish',
    site: 'https://reeflifesurvey.com/species/scarus-flavipectoralis/',
    photo: 'https://images.reeflifesurvey.com/0/species_c9_574a791002916.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Parrotfish',
  },
  {
    name: 'Orange Clownfish',
    site: 'https://reeflifesurvey.com/species/amphiprion-percula/',
    photo: 'https://images.reeflifesurvey.com/0/species_42_56f0b88b9140c.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Clownfish',
  },
  {
    name: 'False Clownfish',
    site: 'https://reeflifesurvey.com/species/amphiprion-ocellaris/',
    photo: 'https://images.reeflifesurvey.com/0/species_6c_57c14fe630111.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Clownfish',
  },
  {
    name: 'Black Anemonefish',
    site: 'https://reeflifesurvey.com/species/amphiprion-melanopus/',
    photo: 'https://images.reeflifesurvey.com/0/species_8e_57c14f3d1d532.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Clownfish',
  },
  {
    name: 'Spinecheek Clownfish',
    site: 'https://reeflifesurvey.com/species/premnas-biaculeatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_71_56f20d99702d8.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Clownfish',
  },
  {
    name: 'Bluespotted Cornetfish',
    site: 'https://reeflifesurvey.com/species/fistularia-commersonii/',
    photo: 'https://images.reeflifesurvey.com/0/species_2b_570daa2ab14e9.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Cornetfish',
  },
  {
    name: 'Bumphead Parrotfish',
    site: 'https://reeflifesurvey.com/species/bolbometopon-muricatum/',
    photo: 'https://images.reeflifesurvey.com/0/species_f6_574aba0a31f7d.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Parrotfish',
  },
  {
    name: 'Napoleon Wrasse',
    site: 'https://reeflifesurvey.com/species/cheilinus-undulatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_e7_57463ab55fe49.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Parrotfish',
  },
  {
    name: 'Bicolor Parrotfish',
    site: 'https://reeflifesurvey.com/species/cetoscarus-ocellatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_35_574a5fda7b827.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Parrotfish',
  },
  {
    name: 'Bleekers Parrotfish',
    site: 'https://reeflifesurvey.com/species/chlorurus-bleekeri/',
    photo: 'https://images.reeflifesurvey.com/0/species_f8_574aa89414b5d.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Parrotfish',
  },
  {
    name: 'Pacific Trumpetfish',
    site: 'https://reeflifesurvey.com/species/aulostomus-chinensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_39_570da3c0bf56a.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Trumpetfish',
  },
  {
    name: 'Trumpetfish maculatus',
    site: 'https://reeflifesurvey.com/species/aulostomus-maculatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_c6_576c99f1b2c60.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Trumpetfish',
  },
  {
    name: 'Gold-banded Butterflyfish',
    site: 'https://reeflifesurvey.com/species/chaetodon-aureofasciatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_0e_56de1a819f9c6.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Butterflyfish',
  },
  {
    name: 'Eclipse Butterflyfish',
    site: 'https://reeflifesurvey.com/species/chaetodon-bennetti/',
    photo: 'https://images.reeflifesurvey.com/0/species_bd_56e203c488681.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Butterflyfish',
  },
  {
    name: 'Brown Butterflyfish',
    site: 'https://reeflifesurvey.com/species/chaetodon-kleinii/',
    photo: 'https://images.reeflifesurvey.com/0/species_0a_56de28c0644d0.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Butterflyfish',
  },
  {
    name: 'Lorde Howe Butterflyfish',
    site: 'https://reeflifesurvey.com/species/amphichaetodon-howensis/',
    photo: 'https://images.reeflifesurvey.com/0/species_76_56e2106358721.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Butterflyfish',
  },
  {
    name: 'Titan Triggerfish',
    site: 'https://reeflifesurvey.com/species/balistoides-viridescens/',
    photo: 'https://images.reeflifesurvey.com/0/species_86_577343c1765f6.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Red Tooth Triggerfish',
    site: 'https://reeflifesurvey.com/species/odonus-niger/',
    photo: 'https://images.reeflifesurvey.com/0/species_3d_5773523487cc7.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Bridled Triggerfish',
    site: 'https://reeflifesurvey.com/species/sufflamen-fraenatum/',
    photo: 'https://images.reeflifesurvey.com/0/species_d0_57514d75591e6.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Half-moon Triggerfish',
    site: 'https://reeflifesurvey.com/species/sufflamen-chrysopterum/',
    photo: 'https://images.reeflifesurvey.com/0/species_57_57514bb24bfd5.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Striped Triggerfish',
    site: 'https://reeflifesurvey.com/species/balistapus-undulatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_29_57733d5a87498.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Humpback Unicornfish',
    site: 'https://reeflifesurvey.com/species/naso-brachycentron/',
    photo: 'https://images.reeflifesurvey.com/0/species_58_5993f0ccd6f15.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Unicornfish',
  },
  {
    name: 'Blue-spine Unicornfish',
    site: 'https://reeflifesurvey.com/species/naso-unicornis/',
    photo: 'https://images.reeflifesurvey.com/0/species_ed_574ed2c731b74.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Unicornfish',
  },
  {
    name: 'Striped Sweetlips',
    site: 'https://reeflifesurvey.com/species/plectorhinchus-lessonii/',
    photo: 'https://images.reeflifesurvey.com/0/species_ac_573bc2fb7eaec.w1300.h866.JPG',
    type: 'Fish',
    subtype: 'Sweetlips',
  },
  {
    name: 'Oblique-banded Sweetlips',
    site: 'https://reeflifesurvey.com/species/plectorhinchus-lineatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_9a_577b5ac23378f.w1300.h866.JPG',
    type: 'Fish',
    subtype: 'Sweetlips',
  },
  {
    name: 'Oriental Sweetlips',
    site: 'https://reeflifesurvey.com/species/plectorhinchus-vittatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_51_579dda39c87d8.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Sweetlips',
  },
  {
    name: 'Giant Sweetlips',
    site: 'https://reeflifesurvey.com/species/plectorhinchus-albovittatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_88_5774ffad9557f.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Sweetlips',
  },
  {
    name: 'Clown Triggerfish',
    site: 'https://reeflifesurvey.com/species/balistoides-conspicillum/',
    photo: 'https://images.reeflifesurvey.com/0/species_98_5768b1443fcbe.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Triggerfish',
  },
  {
    name: 'Ornate Butterflyfish',
    site: 'https://reeflifesurvey.com/species/chaetodon-ornatissimus/',
    photo: 'https://images.reeflifesurvey.com/0/species_88_56de527269e83.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Butterflyfish',
  },
  {
    name: 'Harlequin Sweetlips',
    site: 'https://reeflifesurvey.com/species/plectorhinchus-chaetodonoides/',
    photo: 'https://images.reeflifesurvey.com/0/species_6a_573bb15cccd0d.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Sweetlips',
  },
  {
    name: 'Orange Spine Unicornfish',
    site: 'https://reeflifesurvey.com/species/naso-lituratus/',
    photo: 'https://images.reeflifesurvey.com/0/species_e9_57d8bb37d4c9c.w1300.h866.jpg',
    type: 'Fish',
    subtype: 'Unicornfish',
  },
  {
    name: 'Western Australian Seahorse',
    site: 'https://reeflifesurvey.com/species/hippocampus-angustus/',
    photo: 'https://images.reeflifesurvey.com/0/species_70_57f5caad06f1c.w1300.h866.JPG',
    type: 'Seahorse',
    subtype: 'Seahorse',
  },
  {
    name: 'Pygmy Seahorse',
    site: 'https://reeflifesurvey.com/species/hippocampus-bargibanti/',
    photo: 'https://images.reeflifesurvey.com/0/species_49_570d9352604a7.w1300.h866.jpg',
    type: 'Seahorse',
    subtype: 'Seahorse',
  },
  {
    name: "White's Seahorse",
    site: 'https://reeflifesurvey.com/species/hippocampus-whitei/',
    photo: 'https://images.reeflifesurvey.com/0/species_c5_570da06cb520e.w1300.h866.jpg',
    type: 'Seahorse',
    subtype: 'Seahorse',
  },
  {
    name: 'Blacktip Reef Shark',
    site: 'https://reeflifesurvey.com/species/carcharhinus-melanopterus/',
    photo: 'https://images.reeflifesurvey.com/0/species_b5_5775d90277a96.w1300.h866.jpg',
    type: 'Shark',
    subtype: 'Shark',
  },
  {
    name: 'Hermit Crab',
    site: 'https://reeflifesurvey.com/species/calcinus-spicatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_1e_59c85a79b3ac1.w1300.h866.JPG',
    type: 'Crab',
    subtype: 'Crab',
  },
  {
    name: 'Red Rock Crab',
    site: 'https://reeflifesurvey.com/species/cancer-productus/',
    photo: 'https://images.reeflifesurvey.com/0/species_54_59db34f0a742b.w1300.h866.jpg',
    type: 'Crab',
    subtype: 'Crab',
  },
  {
    name: 'Spotted Hermit Crab',
    site: 'https://reeflifesurvey.com/species/dardanus-megistos/',
    photo: 'https://images.reeflifesurvey.com/0/species_58_57d92aac7c3b8.w1300.h866.jpg',
    type: 'Crab',
    subtype: 'Crab',
  },
  {
    name: 'Red Spider Crab',
    site: 'https://reeflifesurvey.com/species/schizophrys-aspera/',
    photo: 'https://images.reeflifesurvey.com/0/species_e3_59e3fa4684f6f.w1300.h866.jpg',
    type: 'Crab',
    subtype: 'Crab',
  },
  {
    name: 'Trapeze Crab',
    site: 'https://reeflifesurvey.com/species/trapezia-rufopunctata/',
    photo: 'https://images.reeflifesurvey.com/0/species_9a_59e3fe68b98bd.w1300.h866.JPG',
    type: 'Crab',
    subtype: 'Crab',
  },
  {
    name: 'Arrow Crab',
    site: 'https://reeflifesurvey.com/species/stenorhynchus-lanceolatus/',
    photo: 'https://images.reeflifesurvey.com/0/species_cd_57385d56d5acd.w1300.h866.jpg',
    type: 'Crab',
    subtype: 'Crab',
  },
];

Analyzing flutter_debugging_app...                                      

   info • The value of the field '_counter' isn't used • lib/main.dart:29:7 • unused_field
   info • The method '_incrementCounter' isn't used • lib/main.dart:31:8 • unused_element

2 issues found. (ran in 2.4s)

[✓] Flutter (Channel dev, v1.5.8, on Mac OS X 10.14.4 18E226, locale en-US)
    • Flutter version 1.5.8 at /Users/emiliomaciel/flutter
    • Framework revision 0ba67226ee (12 days ago), 2019-04-24 17:18:28 -0700
    • Engine revision c63d1cf9c9
    • Dart version 2.3.0 (build 2.3.0-dev.0.1 1f1592edce)

 
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/emiliomaciel/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/emiliomaciel/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-1343-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.2.1, Build version 10E1001
    • ios-deploy 1.9.4
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.4)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 35.2.1
    • Dart plugin version 183.6270
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)

[✓] VS Code (version 1.33.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.26.1

[✓] Connected device (1 available)
    • Emílio’s iPhone • a79c59712b95afdff8852bc37765b7a14a5b299b • ios • iOS 12.1.4

@zoechi

@zoechi @cyanglaz you are the only ones that I know. Can you please take a look? Looks serious...

@terrylucas

fyi @terrylucas this is a case the Dart DevTools memory profiler might be able to help with.

Can you run this in profile mode and see if you still get the memory ballooning? A couple of us have tried this and only see it in debug mode, but not profile. This is true on iOS and Android.

@jason-simmons

Also, according to @jason-simmons it seems like it might be the widget inspector that's holding on to references to the images after they should be GC-able (which may be why this doesn't repro on profile/release mode).

Will try tomorrow (late here in France) - but what I can tell right on is that the app crashed on the iOS phone (an iphone6) due to OOM. Debug mode. So it is not just the widget inspector, the memory is getting used in the smartphone.
Cheers

The theory is that having the Widget Inspector enabled might be causing something on the phone to not release the images for garbage collection - it may be holding a reference somewhere to the image preventing it form getting collected. The Inspector is not enabled in profile mode though, where this problem seems to go away.

If you run the app in debug mode from the flutter tools the widget inspector should definitely not be holding on to any widgets. If the widget inspector is activated from IntelliJ or Dart DevTools it could be holding on to references from widgets from the last snapshot of the widget tree that was captured. We do believe we do a good job of freeing references to widgets not in the last snapshot of the widget tree captured by group allocating and freeing references to objects tracked by the inspector.

@dnfield

Hi @dnfield , I've made the test with the code above with profiling mode - going to Xcode, building for profiling (menu Product, Build For, Profile) and then running without building.
And, if I scroll down like crazy, I manage to crash the app - the memory goes from 130MB to +650MB, and boom...
I noticed that if I scroll slowly, the app manages to free memory sometimes, even though it settles at a minimum of 400MB... but it does go to 500MB and down to 320, back up, etc...
So there is some garbage collection going on. But not enough...

@diver2

@diver2 I wasn't able to reproduce that but will try again.

@chinmaygarde

Ok, here's an update for @chinmaygarde:

Engine changes seem to work, as long as I let the GC free the images. I also fixed a bug in my custom image cache, so that makes things slightly better too. However, if I call Image.dispose manually, the disposal does not actually happen. I think this is due to #28912.

Thanks for all the hard work! This app is image heavy, and I really do see the IO thread improvements. Fetching and displaying cached low resolution thumbnails from disk is almost in the sub frame levels.

same issue, any solution ?

The fix is here #42785 🎉🎉🎉

For those who still facing crash issue while loading bunch of picture from web to list.

Image.network('picture_url' , cacheWidth: 100, cacheHeight: 100);

It is still crashing, even with cacheWidth and cacheHeight properties. Any other possible solution?

#48536 should make this better.

Still having this issue in iPhone 6+.

FadeInImage(
    placeholder: MemoryImage(kTransparentImage),
    image: NetworkImage(_hotel.imageUrl.first),
    width: 130,
    height: 120,
    fadeInDuration: const Duration(seconds: 1),
    fadeInCurve: Curves.easeIn,
    fit: BoxFit.contain,
)

Above is what I have inside a ListTile, wrapped inside a ListViewBuilder for my list of up to about 500+ images.

App loads the list smoothly but crashes without warning or errors on scroll. Just shows lost connection to device. Any help/clue/guidance would be much appreciated. Thanks.

Edit: It crashes when the list has more than 100+ images. Around or below that number the crash doesn't happen.

Having the same issue over here

Having same issue with IPhone X, tried to limit maxCacheObject size from 200(default) to 100 to 75 to 25 without luck.

Today Having the same issue over here

Hm ... I still have this issue. And still haven't found a solution to this issue.

I used SliverGrid and it took care of the issue.

…

On Mon, Nov 16, 2020 at 5:55 PM Yudi Setiawan ***@***.***> wrote: Hm ... I still have this issue. And still haven't found a solution to this issue. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#32143 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABYSPV5N57D652QFKRD7QTDSQDEFPANCNFSM4HLBEFDA> .

-- Thanks, Predeep

I'm using CachedNetworkImage after setting memCacheWidth & memCacheHeight to a small value, the issue seems disappeared.

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.

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Memory Leak flutter framework iOS - gridview, listview - it IS a bug... #32143

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Memory Leak flutter framework iOS - gridview, listview - it IS a bug... #32143

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diver2 commented on May 6, 2019

JohnnyDevX commented on May 7, 2019

diver2 commented on May 7, 2019

Hixie commented on May 8, 2019

jacob314 commented on May 8, 2019

dnfield commented on May 8, 2019

dnfield commented on May 8, 2019

diver2 commented on May 8, 2019

dnfield commented on May 8, 2019

jacob314 commented on May 9, 2019

diver2 commented on May 9, 2019

dnfield commented on May 9, 2019

89 remaining items

ds84182 commented on Aug 18, 2019

DyaryRaoof commented on Oct 12, 2019

sooxt98 commented on Oct 20, 2019

gabryelferreira commented on Dec 26, 2019

dnfield commented on Jan 9, 2020

YudiH commented on Jan 16, 2020

iampato commented on Apr 26, 2020

danielappelgren0 commented on Jun 19, 2020

jvidalorozco commented on Aug 10, 2020

CoderJava commented on Nov 16, 2020

predeepravi commented on Nov 16, 2020

JohnOnLee commented on Dec 3, 2020

github-actions commented on Aug 8, 2021

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