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A package to calculate distance between two cordinate points Latitude and Longitude by Miles or Nautical Miles or Kilometers.

calc_lat_long #

A package to calculate distance between two cordinate points Latitude and Longitude by Miles or Nautical Miles or Kilometers.

Getting Started #

  1. Add the latest version of package to your pubspec.yaml (and run dart pub get);
depencencies:
  calc_lat_long: ^1.0.11

Example #

There are a number of properties that you can modify:

  • Latitude1

  • Longitude1

  • Latitude2

  • Longitude2

  • Enum UnitLength.km [mi, km, nm] (miles, kilometers, nautical miles)


Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Padding(
        padding: EdgeInsets.all(16),
        child: ListView(
          keyboardDismissBehavior: ScrollViewKeyboardDismissBehavior.onDrag,
          children: <Widget>[
            TextField(
              controller: latitude1,
              decoration: InputDecoration(labelText: "Latitude 1"),
            ),
            TextField(
              controller: longitude1,
              decoration: InputDecoration(labelText: "Longitude 1"),
            ),
            TextField(
              controller: latitude2,
              decoration: InputDecoration(labelText: "Latitude 2"),
            ),
            TextField(
              controller: longitude2,
              decoration: InputDecoration(labelText: "Longitude 2"),
            ),
            DropdownButton<UnitLength>(
                items: _unitLength.map((UnitLength dropDownStringItem) {
                  return DropdownMenuItem<UnitLength>(
                    value: dropDownStringItem,
                    child: Text(dropDownStringItem.toString()),
                  );
                }).toList(),
                onChanged: (UnitLength newUnitSelected) {
                  _dropDownItemSelected(newUnitSelected);
                  setState(() {
                    _selectedUnit = newUnitSelected;
                  });
                },
                value: _selectedUnit),
            SizedBox(
              height: 15,
            ),
            ElevatedButton(
                onPressed: () {
                  /// Here you must pass your coordinates following by Latitude 1, Latitude 2, Logintude 1, Longitude 2
                  var dist = CalcDistance.distance(
                      num.parse(latitude1.text),
                      num.parse(latitude2.text),
                      num.parse(longitude1.text),
                      num.parse(longitude2.text),
                      _selectedUnit);

                  setState(() {
                    distance = dist;
                  });
                },
                child: Text("Calculate")),
            SizedBox(
              height: 15,
            ),
            Text(distance == 0 ? "" : "Distance: $distance")
          ],
        ),
      )
    );
  }
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Publisher

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A package to calculate distance between two cordinate points Latitude and Longitude by Miles or Nautical Miles or Kilometers.

Repository (GitHub)
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Documentation

API reference

License

MIT (license)

Dependencies

flutter

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