#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

ScreenshotScreenshotScreenshot

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,

Donate

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

Libraries

base_chart_painter
base_chart_renderer
candle_entity
cci_entity
chart_painter
chart_style
chart_translations
data_util
date_format_util
depth_chart
depth_entity
extra_buy_sell_signal
extra_line
extra_text_label
flutter_k_chart
index
index
index
info_window_entity
k_chart_widget
k_entity
k_line_entity
kdj_entity
macd_entity
main_renderer
map_ext
num_ext
number_util
rsi_entity
rw_entity
secondary_renderer
vol_renderer
volume_entity