k_chart_flutter

A high-performance, interactive candlestick (K-line) and line chart widget for Flutter, designed for crypto and financial data visualization.

• Gesture support: drag, scale, long press, fling
• Main chart indicators: MA, BOLL
• Secondary indicators: MACD, KDJ, RSI, WR, CCI
• Customizable style and internationalization
• Suitable for crypto, stock, and other financial charts

Installation

dependencies:
  k_chart_flutter: ^1.0.0

Quick Start

// Initialize data
data = DataUtil.calculate(data);

// Use the KChartWidget
KChartWidget(
  data: data,
  style: ChartStyle(),
  isLine: true,
  isTrendLine: false,
  mainState: MainState.MA,
  volHidden: false,
  secondaryState: SecondaryState.MACD,
  timeFormat: TimeFormat.YEAR_MONTH_DAY,
  translations: {
    'en': ChartTranslations(
      date: 'Date',
      open: 'Open',
      high: 'High',
      low: 'Low',
      close: 'Close',
      changeAmount: 'Change',
      change: 'Change %',
      amount: 'Volume',
    )
  },
  showNowPrice: true,
  hideGrid: true,
  isTapShowInfoDialog: true,
  maDayList: const [1, 100, 1000],
  dataFormat: (value) => value.toStringAsFixed(2)
)

Example

A full demo app is available at examples/k_chart_demo in this repository. You can run and debug it locally.

Contributing

Issues and PRs are welcome!

License

MIT