Question

我正在使用Daniel Cohen Gindi的开源Charts：https://github.com/danielgindi/Charts

我的屏幕上有一个饼图，它的图形如下：

//set pie chart data
graphView.data = PieChartData(dataSets: iPieChartDataSet)

此外，我在屏幕上显示一个按钮similarly to the accepted answer of this question。

“我想要的” 当用户按下屏幕上的UIButton时，我想要显示一个弹出框。

“什么有效” 当我按下UIButton时，将按预期创建并显示弹出窗口。此外，我可以创建弹出窗口，关闭它，然后重新创建它。

“什么行不通” 如果图形出现在屏幕上，则弹出窗口不会出现。我尝试在print中使用UIButton语句，看起来IBAction永远不会被解雇。

其他信息 其他UI操作有效。我可以选择其他选项卡，我可以旋转图形。如果屏幕上的图形存在，似乎UIButton以某种方式被关闭。

相关代码：弹出窗口的创建方式：

@IBAction func informationButtonTapped(_ sender: UIButton) {
    var popoverContent = (self.storyboard?.instantiateViewController(withIdentifier: segueIdentifiers.informationPopover))! as UIViewController
    var nav = UINavigationController(rootViewController: popoverContent)
    nav.modalPresentationStyle = UIModalPresentationStyle.popover
    var popover = nav.popoverPresentationController
    popoverContent.preferredContentSize = CGSize(width: 500,height: 600)
    popover?.delegate = self
    popover?.sourceView = self.view
    popover?.sourceRect = CGRect(x: 0, y: 0, width: 100, height: 100)
    self.present(nav, animated: true, completion: nil)
}

如何创建图表（尽可能缩短）：

private func setChart(dataPoints: [String?], values: [Double]) {
    var dataEntries: [PieChartDataEntry] = []

    for i in 0..<dataPoints.count {
        let dataEntry = PieChartDataEntry(value: values[i], label: dataPoints[i])
        dataEntries.append(dataEntry)
    }
    let pieChartDataSet = PieChartDataSet(values: dataEntries, label: "")
    var iPieChartDataSet: [IChartDataSet] = []

    iPieChartDataSet.append(pieChartDataSet)

    graphView.animate(xAxisDuration: 1.0, yAxisDuration: 1.0)
    graphView.layer.borderWidth = 0.1

    //set pie chart data
    graphView.data = PieChartData(dataSets: iPieChartDataSet)
}

Answer 1

对于我的应用程序，我以编程方式创建了按钮，到目前为止我没有遇到任何问题。继承我的按钮代码，看看它是否适合你。

var updateButton : UIButton = UIButton(type: .custom)

override func viewDidLoad() {
    super.viewDidLoad()

    setChart()

    let buttonHeight = 60.0
    let buttonWidth = 280.0
    let xspacing = 45.0
    let fontSize:CGFloat = 30
    let buttonColor = UIColor.black
    let textColor = UIColor.blue

    updateButton.frame = CGRect(x: xspacing, y: 400, width: buttonWidth, height: buttonHeight)
    updateButton.backgroundColor = buttonColor
    updateButton.clipsToBounds = true
    updateButton.setTitle("Update", for: .normal)
    updateButton.titleLabel!.font = UIFont(name: "ScienceFair", size: fontSize)
    updateButton.titleLabel!.textColor = UIColor.black
    updateButton.addTarget(self, action: #selector(updateFunc), for: .touchUpInside)
    view.addSubview(updateButton)

}

func updateFunc() {
    UIView.animate(withDuration: 0.1, animations: { self.updateButton.transform = CGAffineTransform(scaleX: 0.9, y: 0.9) }, completion: { (finish: Bool) in UIView.animate(withDuration: 0.1, animations: { self.updateButton.transform = CGAffineTransform.identity }) })
    //Present Popover
}

忽略已注释的#selector的stackoverflow格式。这不是评论。

在“Charts by Daniel Cohen Gindi”图表自身图表之后，屏幕上的UIButton不再可选

1 个答案: