Question

好的，这个让我头疼，但我确信比我更聪明的人可以很容易地解决这个问题。我有一些变量可以计算视图中可以容纳多少个小方块。我想以编程方式使用特定顺序的小方块填充此视图。我想动画这个并改变颜色和所有这些其他的东西，但我真正努力的部分是以正确的顺序获得这些正方形。我将尝试说明我尝试添加这些视图的顺序。我希望这个没问题。

| 1 | 3 | 6 | 11 | 18 |

| 4 | 2 | 8 | 13 | 20 |

| 7 | 9 | 5 | 15 | 22 |

| 12 | 14 | 16 | 10 | 24 |

| 19 | 21 | 23 | 25 | 17 |

或另一种很酷的方式是：

| 1 | 3 | 8 | 15 | 24 |

| 4 | 2 | 6 | 13 | 22 |

| 9 | 7 | 5 | 11 | 20 |

| 16 | 14 | 12 | 10 | 18 |

| 25 | 23 | 21 | 19 | 17 |

好的，所以如果没有看到图案，它会从左上角开始。它向上移动1，向下移动1，然后填充上方和左侧的单元格，从外部顶部和左侧开始，向内移动。

这是我到目前为止的代码：

    [DllImport("HelloCppLibrary.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern IntPtr HelloFromCPP();

    public static void Main(string[] args)
    {
        Console.WriteLine( Marshal.PtrToStringAnsi(HelloFromCPP()) );

我不知道怎么做“for”循环或循环以这个疯狂的顺序填充它。我真的希望有人能解决这个问题！

Answer 1

试试这个！这是一个完整的viewController（示例）：

创建数字的最大值
按照数字

希望这能让你更接近你想要的东西！

import UIKit

class viewController: UIViewController {

  let numberOfRows = 10                   //numberOfRows and columns to you can change as needed
  let numberOfColumns = 10
  var currentNumber = 1                   //set the first value in the table, can start anywhere
  typealias Position = (Int, Int)
  var currentPostion = (0,0)              //start at 0,0 in the grid
  var rows = [[Int?]]()                   //rows will hold an array of columns (which is also an array)

  var boxes = [UIView]()
  var boxTracker = 0
  var timer = NSTimer()

  override func viewDidLoad() {
    super.viewDidLoad()

    populateMatrix()                     //create the row/column matrix


    timer = NSTimer.scheduledTimerWithTimeInterval(0.05, target: self, selector: #selector(self.timerTicked), userInfo: nil, repeats: true)

  }

  func timerTicked() {
    UIView.animateWithDuration(1.0) {
      self.boxes[self.boxTracker].backgroundColor = UIColor.yellowColor()
    }
    boxTracker += 1
    if boxTracker >= boxes.count {
      timer.invalidate()
    }
  }

  func populateMatrix() {
    rows = createEmptyMatrix()
    while currentPostion < (numberOfRows, numberOfColumns) {
      if valueAtPosition(currentPostion) == nil {         //check the current position
        setValueAtPosition(currentPostion, value: currentNumber)  //if it's nil, assign it the next number and increment it
        currentNumber += 1
      }
      let positionNumber = currentPostion.0
      for pos in (0..<positionNumber).reverse() {   //look up from the current postion and fill it in if it's nil
        let upPosition = (pos, currentPostion.1)
        if valueAtPosition(upPosition) == nil {
          setValueAtPosition(upPosition, value: currentNumber)
          currentNumber += 1
        }
        let leftPosition = (currentPostion.1, pos)   //look left from the current position and fill it in if it's nil
        if valueAtPosition(leftPosition) == nil {
          setValueAtPosition(leftPosition, value: currentNumber)
          currentNumber += 1
        }
      }
      currentPostion = (currentPostion.0 + 1, currentPostion.1 + 1)   //move diagonally 1 postion and start over again!
    }
  }

  func createEmptyMatrix() -> [[Int?]] {
    var viewMatrix = [[Int?]]()
    for _ in 0..<numberOfRows {
      let newColumn = [Int?](count:numberOfColumns, repeatedValue: nil)    //create a column array of nil values and add them to rows
      viewMatrix.append(newColumn)
    }
    return viewMatrix
  }

  func valueAtPosition(position: Position) -> Int? {
    return rows[position.0][position.1]
  }

  func setValueAtPosition(position: Position, value: Int) {
    rows[position.0][position.1] = value
    drawBoxForPosition(position)
  }

  func drawBoxForPosition(position: Position) {
    let row = CGFloat(position.0)
    let column = CGFloat(position.1)
    let itemWidth = self.view.bounds.width / CGFloat(numberOfColumns)
    let itemHeight = self.view.bounds.height / CGFloat(numberOfRows)

    let frame = CGRectMake(row * itemWidth, column * itemHeight, itemWidth, itemHeight)
    let boxView = UIView(frame: frame)
    boxView.layer.borderColor = UIColor.blackColor().CGColor
    boxView.layer.borderWidth = 0.5
    boxView.backgroundColor = UIColor.whiteColor()
    self.view.addSubview(boxView)

    let label = UILabel(frame: boxView.bounds)
    label.text = String(valueAtPosition(position)!)
    label.textAlignment = .Center
    boxView.addSubview(label)

    boxes.append(boxView)
  }
}

用小方块填充视图