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我有以下代碼,但我面臨一些問題,可能與'open'關鍵字有關。迅速 - 擴展PieChartView
class CustomPieChartView: PieChartView
{
internal override func initialize()
{
super.initialize()
renderer = PieChartRenderer(chart: self, animator: _animator, viewPortHandler: _viewPortHandler)
_xAxis = nil
self.highlighter = PieHighlighter(chart: self)
}
}
你不能覆蓋框架的內部功能 –