loplat_plengi

loplat plengi(Place Engine) SDK plugin project.

Supported platforms

• Flutter Android(plengi v2.1.1.3.1)
• Flutter iOS(MiniPlengi v1.4.2.2)

Usage

To use this plugin, add loplat_plengi as a dependency in your pubspec.yaml file.

Examples

Here are small examples that show you how to use the API.

Receive location data

To see detail location data, please visit loplat developer site.

import 'dart:isolate';
import 'dart:ui';
import 'dart:convert';
import 'package:loplat_plengi/loplat_plengi.dart';

/// The name associated with the UI isolate's [SendPort].
const String isolateName = 'isolate';

/// A port used to communicate from a background isolate to the UI isolate.
final ReceivePort port = ReceivePort();

/// The background port
SendPort? uiSendPort;

/// The callback for loplat plengi
Future<bool> callback(String msg) async {
  String locationInfo = getLocationInfo(msg);
  print('result: $locationInfo');

  // This will be null if we're running in the background.
  uiSendPort ??= IsolateNameServer.lookupPortByName(isolateName);
  uiSendPort?.send(null);
  return true;
}

String getLocationInfo(String log) {
  if (log.isEmpty) {
    return '';
  }
  Map<String,dynamic> jsonData = jsonDecode(log);
  String inNear = '';
  String locationInfo = '';
  if (jsonData['place'] != null) {
    if (jsonData['place']['accuracy'] >= jsonData['place']['threshold']) {
      inNear = '[IN]';
    } else {
      inNear = '[NEAR]';
    }
    locationInfo += '  $inNear${jsonData['place']['name']},'
        '${jsonData['place']['tags']}(${jsonData['place']['loplat_id']}),'
        '${jsonData['place']['floor']}F,${jsonData['place']['accuracy']}/${jsonData['place']['threshold']}';
  }
  if (jsonData['complex'] != null) {
    locationInfo += '\n  [${jsonData['complex']['id']}]${jsonData['complex']['name']}';
  }
  if (jsonData['area'] != null) {
    locationInfo += '\n  [${jsonData['area']['id']}]${jsonData['area']['tag']},${jsonData['area']['name']}';
  }
  if (jsonData['district'] != null) {
    locationInfo += '\n  ${jsonData['district']['lv1_name']} ${jsonData['district']['lv2_name']} ${jsonData['district']['lv3_name']}';
  }
  if (jsonData['location'] != null) {
    locationInfo += '\n  ${jsonData['location']['lat']}, ${jsonData['location']['lng']}';
  }
  if (jsonData['ad'] != null) {
    locationInfo += '\n  ${jsonData['ad']['campaign_id']}, ${jsonData['ad']['title']}, ${jsonData['ad']['body']}';
  }
  return locationInfo;
}

Future<void> main() async {
  /// Register the UI isolate's SendPort to allow for communication from the background isolate.
  IsolateNameServer.registerPortWithName(
    port.sendPort,
    isolateName,
  );

  runApp(const MyApp());

  /// After runApp, register callback
  LoplatPlengiPlugin.setListener(callback);
}