PNChart 使用

func  setLineChart(){
        
  /// 定义一个lineChart    
	var lineChart = PNLineChart(frame: CGRectMake(0, self.view.frame.height/4, self.view.frame.width, self.view.frame.height/2))
	//不要使用下面的方法，Width 不好计算，只设置数据的话宽度会自动设定
	//lineChart.setXLabels(["A","B","C","D","E","F"], withWidth: 50)
	lineChart.xLabels = ["A","B","C","D","E","F"]
	lineChart.axisColor = UIColor.blackColor()
	lineChart.showCoordinateAxis = true
        
	/// 设置第一根折线
	var dataArray = [1,4,9,20,8,9]
	var lineChartData = PNLineChartData()
	//lineChartData.lineWidth = 20
	lineChartData.itemCount = UInt(dataArray.count)
	lineChartData.color = UIColor.greenColor()
	lineChartData.getData = ({(index:UInt) -> PNLineChartDataItem in
	var y = dataArray[Int(index)]
	return PNLineChartDataItem(y: CGFloat(y))
	})
	//为数据源设置Title
	lineChartData.dataTitle = "Swift"
        
	/// 设置第二根折线
	var dataArray2 = [5,19,9,3,5]
	var lineChartData2 = PNLineChartData()
	//lineChartData.lineWidth = 20
	lineChartData2.itemCount = UInt(dataArray2.count)
	lineChartData2.color = UIColor.redColor()
	lineChartData2.getData = ({(index:UInt) -> PNLineChartDataItem in
		var y = dataArray2[Int(index)]
		return PNLineChartDataItem(y: CGFloat(y))
	})
        
	//把折线加入到lineChart中，开始画图
	lineChart.chartData = [lineChartData,lineChartData2]
	lineChart.strokeChart()
        
	self.view.addSubview(lineChart)
        
	/// 为图表设置标签，****要在画图之后添加****
	//为数据源2设置Title
	lineChartData2.dataTitle = "OC"
	//选择标签风格
	lineChart.legendStyle = PNLegendItemStyle.Serial
	//获取标签
	var legend = lineChart.getLegendWithMaxWidth(self.view.frame.width)
	//设置标签位置
	legend.frame = CGRectMake(50, lineChart.frame.origin.y + lineChart.frame.height + 10 , legend.frame.width, legend.frame.height)
        
	self.view.addSubview(legend)
        
	lineChart.delegate = self
	}

func setBarChart(){
	//直接初始化一个PNBarChart，不要数据源
	var barChart = PNBarChart(frame: CGRectMake(0, 200, self.view.frame.width, 350))
	barChart.xLabels = ["A","B","C","D","E"]
	//barChart.xLabelWidth = 55
	barChart.yValues = [1,3,6,-7,15]
	//显示图表边界
	barChart.showChartBorder = true
	//允许负数
	barChart.showLevelLine = false
        
	//barChart.strokeColor = UIColor.redColor()
	barChart.barRadius = 2
	//设置文字颜色，**********设置不了************
	barChart.labelTextColor = UIColor.redColor()
        
	//开始画图
	barChart.strokeChart()
	self.view.add
}

func setCircleChart(){
	//直接初始化一个PNCircleChart ，不要数据源之类的
	var circelChart = PNCircleChart(frame: CGRectMake(self.view.frame.width/2 - self.view.frame.width/4, 200, self.view.frame.width/2, 200), total: 100, current: 60, clockwise: false, shadow: true, shadowColor: UIColor.grayColor())
	circelChart.current = 60
	circelChart.total = 100
	//circelChart.strokeColor = UIColor.greenColor()
        
	circelChart.strokeChart()
	self.view.addSubview(circelChart)
	}

func setPieChart(){
	//先定义一个PNPieChartDataItem数组，116 202 33      72 114 224
	var items = [PNPieChartDataItem(value: 50, color: UIColor(red: 116/255, green: 202/255, blue: 33/255, alpha: 1) , description: "Swift"),PNPieChartDataItem(value: 20, color: UIColor(red: 72/255, green: 114/255, blue: 224/255, alpha: 1) , description: "OC")]
        
	var pieChart = PNPieChart(frame: CGRectMake(self.view.frame.width/2 - self.view.frame.width/3, 200, self.view.frame.width/1.5, 200), items: items)
        
	pieChart.descriptionTextFont = UIFont.systemFontOfSize(15)
        
	pieChart.strokeChart()
	self.view.addSubview(pieChart)
        
	//选择标签风格
	pieChart.legendStyle = PNLegendItemStyle.Serial
	//获取标签
	var legend = pieChart.getLegendWithMaxWidth(self.view.frame.width)
	//设置标签位置
	legend.frame = CGRectMake(50, pieChart.frame.origin.y + pieChart.frame.height + 10, legend.frame.width, legend.frame.height)
        
	self.view.addSubview(legend)     
	}