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Kakao map which you can use simply. Some features are not supported.

Installation #

First, you need to get a kakao map javascript key

For more information, you can check here kakao map guide : https://apis.map.kakao.com/web/guide/

  • Android

Minimum sdk must be higher than 21

AndroidManifest.xml file

  • Internet permission is required
  • Add android:usesCleartextTraffic="true" in application tag
<application
  android:label="your app name"
  android:icon="@mipmap/ic_launcher"
  android:usesCleartextTraffic="true">
  • IOS

  • IOS version must be higher than 9.0

  • Add following code in your Info.plist

<key>NSAppTransportSecurity</key>
      <dict>
        <key>NSAllowsArbitraryLoads</key> <true/>
      </dict>
    <key>io.flutter.embedded_views_preview</key> <true/>

How to use #

First, import the package

import 'package:kakaomap_webview/kakaomap_webview.dart';

You can use this as Widget and full screen webview

  1. When you want to use as Widget
    KakaoMapView(
    width: size.width,
    height: 400,
    kakaoMapKey: kakaoMapKey,
    lat: 33.450701,
    lng: 126.570667,
    showMapTypeControl: true,
    showZoomControl: true,
    markerImageURL: 'https://t1.daumcdn.net/localimg/localimages/07/mapapidoc/marker_red.png',
    onTapMarker: (message) {
      //event callback when the marker is tapped
    });
  1. When you want to use full screen webview
    KakaoMapUtil util = KakaoMapUtil();
    // String url = await util.getResolvedLink(
    //     util.getKakaoMapURL(37.402056, 127.108212, name: 'Kakao 본사'));

    /// This is short form of the above comment
    String url =
        await util.getMapScreenURL(37.402056, 127.108212, name: 'Kakao 본사');

    Navigator.push(
        context, MaterialPageRoute(builder: (_) => KakaoMapScreen(url: url)));

kakaomap

  • Sample code
import 'package:flutter/material.dart';
import 'package:example/kakaomap_screen.dart';

const String kakaoMapKey = 'yourKey';

class KakaoMapTest extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    Size size = MediaQuery.of(context).size;
    return Scaffold(
      appBar: AppBar(title: Text('Kakao map webview test')),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children: [
          KakaoMapView(
              width: size.width,
              height: 400,
              kakaoMapKey: kakaoMapKey,
              lat: 33.450701,
              lng: 126.570667,
              showMapTypeControl: true,
              showZoomControl: true,
              markerImageURL:
                  'https://t1.daumcdn.net/localimg/localimages/07/mapapidoc/marker_red.png',
              onTapMarker: (message) async {
                ScaffoldMessenger.of(context)
                    .showSnackBar(SnackBar(content: Text('Marker is clicked')));

                //await _openKakaoMapScreen(context);
              }),
          ElevatedButton(
              child: Text('Kakao map screen'),
              onPressed: () async {
                await _openKakaoMapScreen(context);
              })
        ],
      ),
    );
  }

  Future<void> _openKakaoMapScreen(BuildContext context) async {
    KakaoMapUtil util = KakaoMapUtil();

    // String url = await util.getResolvedLink(
    //     util.getKakaoMapURL(37.402056, 127.108212, name: 'Kakao 본사'));

    /// This is short form of the above comment
    String url =
        await util.getMapScreenURL(37.402056, 127.108212, name: 'Kakao 본사');

    Navigator.push(
        context, MaterialPageRoute(builder: (_) => KakaoMapScreen(url: url)));
  }
}
  • In case you want to use KakaoMapScreen, intent and itms-app scheme url need to be handled. Please check example.

strokeColor, strokeWeight, strokeColorOpacity, polygonColor, polygonColorOpacity, strokeStyle are optional.

Those features have default values. Only path is required except when you want to customize.

스크린샷 2022-05-03 오전 10 43 45

        KakaoMapView(
              width: size.width,
              height: 400,
              kakaoMapKey: kakaoMapKey,
              lat: 33.450701,
              lng: 126.570667,
              showMapTypeControl: true,
              showZoomControl: true,
              draggableMarker: true,
              polyline: KakaoFigure(
                path: [
                  KakaoLatLng(lat: 33.45080604081833, lng: 126.56900858718982),
                  KakaoLatLng(lat: 33.450766588506054, lng: 126.57263147947938),
                  KakaoLatLng(lat: 33.45162008091554, lng: 126.5713226693152)
                ],
                strokeColor: Colors.blue,
                strokeWeight: 2.5,
                strokeColorOpacity: 0.9,
              ),
              polygon: KakaoFigure(
                path: [
                  KakaoLatLng(lat: 33.45086654081833, lng: 126.56906858718982),
                  KakaoLatLng(lat: 33.45010890948828, lng: 126.56898629127468),
                  KakaoLatLng(lat: 33.44979857909499, lng: 126.57049357211622),
                  KakaoLatLng(lat: 33.450137483918496, lng: 126.57202991943016),
                  KakaoLatLng(lat: 33.450706188506054, lng: 126.57223147947938),
                  KakaoLatLng(lat: 33.45164068091554, lng: 126.5713126693152)
                ],
                polygonColor: Colors.red,
                polygonColorOpacity: 0.3,
                strokeColor: Colors.deepOrange,
                strokeWeight: 2.5,
                strokeColorOpacity: 0.9,
                strokeStyle: StrokeStyle.shortdashdot,
              ),
              markerImageURL:
                  'https://t1.daumcdn.net/localimg/localimages/07/mapapidoc/marker_red.png',
              onTapMarker: (message) {
                ScaffoldMessenger.of(context)
                    .showSnackBar(SnackBar(content: Text(message.message)));
        })
  • Multiple markers

You can make multiple markers only in customScript now.

Still, there is a sample code.

    KakaoMapView(
        width: size.width,
        height: 400,
        kakaoMapKey: kakaoMapKey,
        lat: 33.450701,
        lng: 126.570667,
        customScript: '''
    var markers = [];

    function addMarker(position) {

      var marker = new kakao.maps.Marker({position: position});

      marker.setMap(map);

      markers.push(marker);
    }

    for(var i = 0 ; i < 3 ; i++){
      addMarker(new kakao.maps.LatLng(33.450701 + 0.0003 * i, 126.570667 + 0.0003 * i));

      kakao.maps.event.addListener(markers[i], 'click', (function(i) {
        return function(){
          onTapMarker.postMessage('marker ' + i + ' is tapped');
        };
      })(i));
    }

		  var zoomControl = new kakao.maps.ZoomControl();
      map.addControl(zoomControl, kakao.maps.ControlPosition.RIGHT);

      var mapTypeControl = new kakao.maps.MapTypeControl();
      map.addControl(mapTypeControl, kakao.maps.ControlPosition.TOPRIGHT);
              ''',
        onTapMarker: (message) {
          ScaffoldMessenger.of(context)
              .showSnackBar(SnackBar(content: Text(message.message)));
    });
  • Overlay

overlay

You can put text since 0.2.0 version.

Simply, you can add overlayText in KakaoMapView

  • Don't use overlayText and customOverlay at the same time.
    overlayText: '카카오!'
  • Custom Overlay

custom

You can customize overlay with kakao guideline.

In this case, you can use customOverlayStyle and customOverlay.

  • Don't use overlayText and customOverlay at the same time.

Sample code

    customOverlayStyle: '''<style>
                  .customoverlay {position:relative;bottom:85px;border-radius:6px;border: 1px solid #ccc;border-bottom:2px solid #ddd;float:left;}
    .customoverlay:nth-of-type(n) {border:0; box-shadow:0px 1px 2px #888;}
    .customoverlay a {display:block;text-decoration:none;color:#000;text-align:center;border-radius:6px;font-size:14px;font-weight:bold;overflow:hidden;background: #d95050;background: #d95050 url(https://t1.daumcdn.net/localimg/localimages/07/mapapidoc/arrow_white.png) no-repeat right 14px center;}
    .customoverlay .title {display:block;text-align:center;background:#fff;margin-right:35px;padding:10px 15px;font-size:14px;font-weight:bold;}
    .customoverlay:after {content:'';position:absolute;margin-left:-12px;left:50%;bottom:-12px;width:22px;height:12px;background:url('https://t1.daumcdn.net/localimg/localimages/07/mapapidoc/vertex_white.png')}
                  </style>''',
                  customOverlay: '''
    var content = '<div class="customoverlay">' +
        '  <a href="https://map.kakao.com/link/map/11394059" target="_blank">' +
        '    <span class="title">카카오!</span>' +
        '  </a>' +
        '</div>';

    var position = new kakao.maps.LatLng(33.450701, 126.570667);

    var customOverlay = new kakao.maps.CustomOverlay({
        map: map,
        position: position,
        content: content,
        yAnchor: 1
    });
                  '''
  • Map controller

controller

Now you can control map more with webview controller. When mapController is null, please use StatefulWidget.

Sample code

    KakaoMapView(
      mapController: (controller) {
        _mapController = controller;
      },
    ),
    Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        InkWell(
          onTap: () {
            _mapController.runJavascript(
                'map.setLevel(map.getLevel() - 1, {animate: true})');
          },
          child: CircleAvatar(
            backgroundColor: Colors.red,
            child: const Icon(
              Icons.remove,
              color: Colors.white,
            ),
          ),
        ),
        InkWell(
          onTap: () {
            _mapController.runJavascript(
                'map.setLevel(map.getLevel() + 1, {animate: true})');
          },
          child: CircleAvatar(
            backgroundColor: Colors.blue,
            child: const Icon(
              Icons.add,
              color: Colors.white,
            ),
          ),
        )
      ],
    ),
    Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        InkWell(
          onTap: () {
            _mapController.runJavascript('''
          addMarker(new kakao.maps.LatLng($_lat + 0.0003, $_lng + 0.0003));

          function addMarker(position) {
            let testMarker = new kakao.maps.Marker({position: position});

            testMarker.setMap(map);
          }
            ''');
          },
          child: CircleAvatar(
            backgroundColor: Colors.amber,
            child: const Icon(
              Icons.pin_drop,
              color: Colors.white,
            ),
          ),
          ),
          InkWell(
            onTap: () async {
              await _mapController.reload();
              debugPrint('[refresh] done');
            },
            child: CircleAvatar(
              backgroundColor: Colors.green,
              child: const Icon(
                Icons.refresh,
                color: Colors.white,
              ),
            ),
          )
        ],
      )
  • Callbacks

Tap marker, zoom change, camera idle, boundaryUpdate events are available.

Sample code

    KakaoMapView(
      onTapMarker: (message) {
        ScaffoldMessenger.of(context)
            .showSnackBar(SnackBar(content: Text(message.message)));
      },
      zoomChanged: (message) {
        debugPrint('current zoom level : ${message.message}');
      },
      cameraIdle: (message) {
        KakaoLatLng latLng =
            KakaoLatLng.fromJson(jsonDecode(message.message));
        debugPrint('[idle] ${latLng.lat}, ${latLng.lng}');
      },
      boundaryUpdate: (message) {
        KakaoBoundary boundary =
            KakaoBoundary.fromJson(jsonDecode(message.message));
        debugPrint(
            'ne : ${boundary.neLat}, ${boundary.neLng}, sw : ${boundary.swLat}, ${boundary.swLng}');
      }
    )
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Publisher

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Kakao map which you can use simply. Some features are not supported.

Homepage

Documentation

API reference

License

Icon for licenses.MIT (LICENSE)

Dependencies

flutter, http, webview_flutter

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