私はUIView
クラスを私のアプリに置いています。これは折れ線グラフを描いています。そこでは、私はそうのように私のgraphPoints
変数を割り当てる:私は何をしたいか1つのクラスの引数をUIViewクラスに渡すにはどうすればいいですか? Swift
var graphPoints:[Int] = [1,2,3,5,7,9]
var graphPoints2:[Int] = [1,2,3,5,7,9]
は、別のクラスからInt
の配列を渡すと、これらの変数を割り当てることですが、私はそれを行う方法がわからないです。最初はすべてのコードをfunc
に入れ、パラメータとしてarray [Int]
を入れて別のクラスから呼び出しましたが、グラフ全体をプロットしませんでした。私はこれをどのようにして行うのですか?私は配列を渡す
import UIKit
@IBDesignable class GraphPlotter: UIView {
var graphPoints:[Int] = [1,2,3,5,7,9]
var graphPoints2:[Int] = [1,2,3,5,7,9]
//1 - the properties for the gradient
var startColor: UIColor = UIColor.redColor()
var endColor: UIColor = UIColor.greenColor()
override func drawRect(rect: CGRect) {
let width = rect.width
let height = rect.height
//set up background clipping area
let path = UIBezierPath(roundedRect: rect,
byRoundingCorners: UIRectCorner.AllCorners,
cornerRadii: CGSize(width: 8.0, height: 8.0))
path.addClip()
//2 - get the current context
let context = UIGraphicsGetCurrentContext()
let colors = [startColor.CGColor, endColor.CGColor]
//3 - set up the color space
let colorSpace = CGColorSpaceCreateDeviceRGB()
//4 - set up the color stops
let colorLocations:[CGFloat] = [0.0, 1.0]
//5 - create the gradient
let gradient = CGGradientCreateWithColors(colorSpace,
colors,
colorLocations)
//6 - draw the gradient
var startPoint = CGPoint.zero
var endPoint = CGPoint(x:0, y:self.bounds.height)
CGContextDrawLinearGradient(context,
gradient,
startPoint,
endPoint,
[])
//calculate the x point
let margin:CGFloat = 40.0
let columnXPoint = { (column:Int) -> CGFloat in
//Calculate gap between points
let spacer = (width - margin*2 - 4)/
CGFloat((self.graphPoints.count - 1))
var x:CGFloat = CGFloat(column) * spacer
x += margin + 2
return x
}
// calculate the y point
let topBorder:CGFloat = 60
let bottomBorder:CGFloat = 50
let graphHeight = height - topBorder - bottomBorder
let maxValue = graphPoints2.maxElement()!
let columnYPoint = { (graphPoint2:Int) -> CGFloat in
var y:CGFloat = CGFloat(graphPoint2)/
CGFloat(maxValue) * graphHeight
y = graphHeight + topBorder - y // Flip the graph
return y
}
// draw the line graph
UIColor.flatTealColor().setFill()
UIColor.flatTealColor().setStroke()
//set up the points line
let graphPath = UIBezierPath()
//go to start of line
graphPath.moveToPoint(CGPoint(x:columnXPoint(0),
y:columnYPoint(graphPoints2[0])))
//add points for each item in the graphPoints array
//at the correct (x, y) for the point
for i in 1..<graphPoints.count {
let nextPoint = CGPoint(x:columnXPoint(i),
y:columnYPoint(graphPoints2[i]))
graphPath.addLineToPoint(nextPoint)
}
//Create the clipping path for the graph gradient
//1 - save the state of the context (commented out for now)
CGContextSaveGState(context)
//2 - make a copy of the path
let clippingPath = graphPath.copy() as! UIBezierPath
//3 - add lines to the copied path to complete the clip area
clippingPath.addLineToPoint(CGPoint(
x: columnXPoint(graphPoints.count - 1),
y:height))
clippingPath.addLineToPoint(CGPoint(
x:columnXPoint(0),
y:height))
clippingPath.closePath()
//4 - add the clipping path to the context
clippingPath.addClip()
let highestYPoint = columnYPoint(maxValue)
startPoint = CGPoint(x:margin, y: highestYPoint)
endPoint = CGPoint(x:margin, y:self.bounds.height)
CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, [])
CGContextRestoreGState(context)
//draw the line on top of the clipped gradient
graphPath.lineWidth = 2.0
graphPath.stroke()
//Draw the circles on top of graph stroke
for i in 0..<graphPoints.count {
var point = CGPoint(x:columnXPoint(i), y:columnYPoint(graphPoints2[i]))
point.x -= 5.0/2
point.y -= 5.0/2
let circle = UIBezierPath(ovalInRect:
CGRect(origin: point,
size: CGSize(width: 5.0, height: 5.0)))
circle.fill()
let label = UILabel(frame: CGRectMake(0, 0, 200, 21))
label.center = CGPointMake(160, 284)
label.textAlignment = NSTextAlignment.Center
// label.text = "I'am a test label"
self.addSubview(label)
}
//Draw horizontal graph lines on the top of everything
let linePath = UIBezierPath()
//top line
linePath.moveToPoint(CGPoint(x:margin, y: topBorder))
linePath.addLineToPoint(CGPoint(x: width - margin,
y:topBorder))
//center line
linePath.moveToPoint(CGPoint(x:margin,
y: graphHeight/2 + topBorder))
linePath.addLineToPoint(CGPoint(x:width - margin,
y:graphHeight/2 + topBorder))
//bottom line
linePath.moveToPoint(CGPoint(x:margin,
y:height - bottomBorder))
linePath.addLineToPoint(CGPoint(x:width - margin,
y:height - bottomBorder))
let color = UIColor.flatTealColor()
color.setStroke()
linePath.lineWidth = 1.0
linePath.stroke()
}
}
DBController、FUNC dosmth:
func dosmth(metadata: DBMetadata!) {
let documentsDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
let localFilePath = (documentsDirectoryPath as NSString).stringByAppendingPathComponent(metadata.filename)
var newarray = [Int]()
do{
let data = try String(contentsOfFile: localFilePath as String,
encoding: NSASCIIStringEncoding)
print(data)
newarray = data.characters.split(){$0 == ","}.map{
Int(String.init($0).stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet()))!}
print(newarray)
}
catch let error { print(error) }
//Probably wrong
GraphPlotter().graphPoints = newarray
GraphPlotter().graphPoints2 = newarray
}
手元の質問とは無関係に、私はxとyの値を別々の配列にすることをお勧めします。タプルの配列(例えば '[(Int、Int)])や' CGPoint'値( '[CGPoint]'など)があります。そうすれば、一貫した数のx値とy値が保証されます。 – Rob