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A Flutter K Chart. On the basis of the forked, we added the function that will show buy sell signal on the charts,and support draw lines on the charts,and text on the charts.

#Introduce We forked the project from https://github.com/OpenFlutter/k_chart and add some function to meet our requirments.

all the version below are the version we released.

[0.5.1] #

  • added the function that will show buy sell signal on the charts

[0.5.2] #

  • support set scale-x from parameter when build widget.it solve the problem that on the flutter web,the gesture scale not work.

[0.5.3] #

  • support extra line draw on the charts

[0.5.4] #

  • support extra text label draw on the charts

[0.5.5] #

  • support text scale parameter in text label

[0.5.6] #

  • support line stroke width parameter

how to publish: #

https://dart.cn/tools/pub/publishing

  1. pubspec.yaml modify
  2. CHANGELOG.md modify
  3. run command:
    1. dart pub publish --dry-run
    2. dart pub publish

Raw README.md from forked project #

k_chart #

Maybe this is the best k chart in Flutter.Support drag,scale,long press,fling.And easy to use.

display #

image

Screenshot Screenshot Screenshot

gif

demo

demo

Getting Started #

Install

dependencies:
  k_chart: ^0.5.0

or use latest:

k_chart:
    git:
      url: https://github.com/mafanwei/k_chart

Usage

When you change the data, you must call this:

DataUtil.calculate(datas); //This function has some optional parameters: n is BOLL N-day closing price. k is BOLL param.

use k line chart:

Container(
              height: 450,
              width: double.infinity,
              child: KChartWidget(
                chartStyle, // Required for styling purposes
                chartColors,// Required for styling purposes
                datas,// Required,Data must be an ordered list,(history=>now)
                isLine: isLine,// Decide whether it is k-line or time-sharing
                mainState: _mainState,// Decide what the main view shows
                secondaryState: _secondaryState,// Decide what the sub view shows
                fixedLength: 2,// Displayed decimal precision
                timeFormat: TimeFormat.YEAR_MONTH_DAY,
                onLoadMore: (bool a) {},// Called when the data scrolls to the end. When a is true, it means the user is pulled to the end of the right side of the data. When a
                // is false, it means the user is pulled to the end of the left side of the data.
                maDayList: [5,10,20],// Display of MA,This parameter must be equal to DataUtil.calculate‘s maDayList
                bgColor: [Colors.black, Colors.black],// The background color of the chart is gradient
                translations: kChartTranslations,// Graphic language
                volHidden: false,// hide volume
                showNowPrice: true,// show now price
                isOnDrag: (isDrag){},// true is on Drag.Don't load data while Draging.
                onSecondaryTap:(){}// on secondary rect taped.
              ),
            ),

use TrendLine(New): You can use Trendline by long-pressing and moving your finger after setting true to isTrendLine property.
use depth chart:

DepthChart(_bids, _asks, chartColors) //Note: Datas must be an ordered list,

Buy a cup of coffee for the author.

alipay wechat

Thanks

gwhcn/flutter_k_chart

Other

Maybe there are some bugs in this k chart,or you want new indicators,you can create a pull request.I will happy to accept it and I hope we can make it better.


The version of fork

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A Flutter K Chart. On the basis of the forked, we added the function that will show buy sell signal on the charts,and support draw lines on the charts,and text on the charts.

Repository (GitHub)
View/report issues

Documentation

API reference

License

BSD-2-Clause (LICENSE)

Dependencies

flutter

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