Simple Asset Tracking Example

1
import 'dart:io';
2
import 'package:flutter/material.dart';
3
import 'package:nb_asset_tracking_flutter/nb_asset_tracking_flutter.dart';
4
import 'package:nb_asset_tracking_flutter_example/util/consts.dart';
5
import 'package:nb_asset_tracking_flutter_example/util/permiss_checker.dart';
6
import 'package:nb_asset_tracking_flutter_example/util/toast_mixin.dart';
7
import 'package:uuid/uuid.dart';
8

9
class SimpleTrackingExample extends StatefulWidget {
10
  @override
11
  SimpleTrackingExampleState createState() => SimpleTrackingExampleState();
12
}
13

14
class SimpleTrackingExampleState extends State<SimpleTrackingExample>
15
    with ToastMixin
16
    implements OnTrackingDataCallBack {
17
  bool bindAsset = false;
18
  final assetTracking = AssetTracking();
19
  String locationInfo = "";
20
  String assetId = "";
21
  bool isTracking = false;
22

23
  @override
24
  void initState() {
25
    super.initState();
26
    initAssetTracking();
27
    createAndBindAssetId();
28
  }
29

30
  void initAssetTracking() {
31
    assetTracking.initialize(apiKey: accessKey);
32
    assetTracking.setFakeGpsConfig(allow: true);
33
    assetTracking.addDataListener(this);
34
  }
35

36
  @override
37
  Widget build(BuildContext context) {
38
    return Scaffold(
39
      appBar: AppBar(
40
        toolbarHeight: 0,
41
      ),
42
      body: Container(
43
        padding: EdgeInsets.all(16),
44
        child: Column(
45
          crossAxisAlignment: CrossAxisAlignment.start,
46
          children: [
47
            Row(
48
              children: [
49
                ElevatedButton(
50
                  onPressed: (bindAsset && !isTracking)
51
                      ? () async {
52
                          if (Platform.isAndroid) {
53
                            var granted = await checkAndRequestLocationPermission();
54
                            if (!granted) {
55
                              showToast("Please granted location access for this app");
56
                              return;
57
                            }
58
                          }
59
                          if (assetId.isEmpty) {
60
                            showToast("You mast bind a asset Id first");
61
                            return;
62
                          }
63
                          assetTracking.startTracking();
64
                        }
65
                      : null,
66
                  child: const Text("Start Tracking"),
67
                ),
68
                Padding(
69
                  padding: const EdgeInsets.only(left: 8.0),
70
                  child: ElevatedButton(
71
                    onPressed: isTracking
72
                        ? () {
73
                      assetTracking.stopTracking();
74
                    }
75
                        : null,
76
                    child: const Text("Stop Tracking"),
77
                  ),
78
                ),
79
              ],
80
            ),
81
            Padding(
82
              padding: const EdgeInsets.only(top: 8.0),
83
              child: Text("Current Asset id: $assetId"),
84
            ),
85
            Padding(
86
              padding: const EdgeInsets.only(top: 10.0, bottom: 10),
87
              child: Text("Asset Tracking status: ${isTracking ? "on" : "off"} "),
88
            ),
89
            Text(locationInfo)
90
          ],
91
        ),
92
      ),
93
    );
94
  }
95

96
  void createAndBindAssetId() async {
97
    AssetProfile profile = AssetProfile(
98
        customId: const Uuid().v4().toString(), name: "test asset", description: "asset descriptions", attributes: {});
99
    AssetResult result = await assetTracking.createAsset(profile: profile);
100
    if (result.success) {
101
      String assetID = result.data;
102
      var assetResult = await assetTracking.bindAsset(customId: assetID);
103
      if (assetResult.success) {
104
        showToast("Bind asset successfully with asset id ${assetResult.data}");
105
        setState(() {
106
          assetId = assetResult.data;
107
          bindAsset = true;
108
        });
109
      } else {
110
        showToast(assetResult.msg.toString());
111
      }
112
    } else {
113
      showToast(result.msg.toString());
114
    }
115
  }
116

117
  @override
118
  void onLocationFailure(String message) {}
119

120
  @override
121
  void onLocationSuccess(NBLocation location) {
122
    setState(() {
123
      locationInfo = "------- Location Info ------- \n"
124
          "Provider: ${location.provider} \n"
125
          "Latitude: ${location.latitude}\n"
126
          "Longitude: ${location.longitude}\n"
127
          "Altitude: ${location.altitude}\n"
128
          "Accuracy: ${location.accuracy}\n"
129
          "Speed: ${location.speed}\n"
130
          "Bearing: ${location.heading}\n"
131
          "Time: ${location.timestamp}\n";
132
    });
133
  }
134

135
  @override
136
  void onTrackingStart(String message) {
137
    setState(() {
138
      isTracking = true;
139
    });
140
  }
141

142
  @override
143
  void onTrackingStop(String message) {
144
    setState(() {
145
      isTracking = false;
146
      locationInfo = "";
147
    });
148
  }
149

150
  @override
151
  void dispose() {
152
    super.dispose();
153
    assetTracking.removeDataListener(this);
154
    assetTracking.stopTracking();
155
  }
156
}