我从 Telerik 开始,并尝试完成提供的演示项目。
当我尝试声明 TKChartDataPoint 时,它给出了一个错误:
代码段:
class ViewController: UIViewController {
let x = 10
let y = 10
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let chart = TKChart(frame: self.view.bounds.insetBy(dx: 15, dy: 15))
chart.autoresizingMask = [UIViewAutoresizing.flexibleWidth, UIViewAutoresizing.flexibleHeight]
self.view.addSubview(chart)
var randomNumericData = [TKChartDataPoint]()
for i in 0..<10 {
//Error Here
randomNumericData += TKChartDataPoint(x: i, y: Double(arc4random() % 100))
}
chart.addSeries(TKChartLineSeries(items: randomNumericData))
chart.title.isHidden = false
chart.title.text = "This is a chart demo"
chart.legend.isHidden = false
chart.allowAnimations = true
}
最佳答案
您应该只使用append
将对象添加到数组中:
randomNumericData.append(TKChartDataPoint(x: i, y: Double(arc4random() % 100)))
如果确实需要,可以使用
+=
,但是randomNumericData
是一个数组,因此要使用+
或+=
添加到其中,添加的部分也应该是一个数组:randomNumericData += [TKChartDataPoint(x: i, y: Double(arc4random() % 100))]
我认为首选第一种解决方案。
关于ios - TKChartDataPoint不符合预期的类型Sequence,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/40219214/