我有一个自定义的集合视图，其中的单元格会自动调整到它的宽度，但由于某种原因，它的高度会缩短单元格，因此我必须滚动....我正在尝试使用自动布局，但它不是为我工作，我无法理解。
我在collectionView下有3个标签。
我确实有一个与超级视图相关的边距约束，它扩展了集合视图的宽度，即使我将其设置为大于或等于0。 当我把它设置为高度=宽度但是我希望它能够伸展以便它支持其他设备尺寸....我需要高度来伸展，但是不会发生这种情况，无论我尝试什么，高度都会不断转动小于宽度。
这是collectionview的代码
//
// ViewController.swift
// collectionview_xmixdrix
//
// Created by admin on 3/4/16.
// Copyright © 2016 il.ac.afeka. All rights reserved.
//
import UIKit
import Foundation
class ViewController: UIViewController,UICollectionViewDelegate,UICollectionViewDataSource
{
var pictures:[String] = ["1","2","3","4","5","6","7","8"]
var visibleCells:[String]=[]
var numInactiveCards=0
var numSections = 0
var numCols = 0
var timer = NSTimer()
var counter=0
let delay_t = 0.5
let TileMargin = CGFloat(10.0)
@IBOutlet weak var ScoreLabel: UILabel!
@IBOutlet weak var ScoreInputLabel: UILabel!
@IBOutlet weak var playbutton: UIButton!
@IBOutlet weak var UIcv: UICollectionView!
@IBOutlet weak var WinningLabel: UILabel!
override func viewDidLoad()
{
super.viewDidLoad()
// self.automaticallyAdjustsScrollViewInsets=false
pictures+=pictures
numCols=Int(sqrt(Float(pictures.count)))
numSections=numCols
playbutton.setTitle("Start", forState: .Normal)
// Do any additional setup after loading the view, typically from a nib.
}
func timerAction()
{
counter+=1
ScoreInputLabel.text = "\(counter)"
}
@IBAction func playAndReset(sender: AnyObject)
{
ScoreInputLabel.text="0"
WinningLabel.hidden=true
gameInit()
timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: #selector(ViewController.timerAction), userInfo: nil, repeats: true)
playbutton.hidden=true
}
func delay(delay:Double, closure:()->())
{
dispatch_after(
dispatch_time(
DISPATCH_TIME_NOW,
Int64(delay * Double(NSEC_PER_SEC))
),
dispatch_get_main_queue(), closure)
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return numCols
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return numSections
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
{
let cell=collectionView.dequeueReusableCellWithReuseIdentifier("cellidentifier", forIndexPath: indexPath) as! CollectionViewCell
return cell
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
let rowsCount = CGFloat(numCols)
let totalTileMargin = TileMargin * (rowsCount + 1)
let dimentions = (collectionView.frame.width-totalTileMargin) / (rowsCount )
// let dimentions = collectionView.frame.width / rowsCount - (rowsCount * TileMargin )
return CGSize(width: dimentions, height: dimentions) // collectionView.frame.height * 0.9
}
/*
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAtIndex section: Int) -> UIEdgeInsets {
return UIEdgeInsetsMake(TileMargin, TileMargin, TileMargin, TileMargin)
}
*/
func gameInit()
{
counter=0
var tmpPictures = pictures
for i in 0 ..< UIcv.numberOfSections()
{
for j in 0 ..< UIcv.numberOfItemsInSection(i)
{
let cell=UIcv.cellForItemAtIndexPath(NSIndexPath(forItem: j,inSection: i)) as! CollectionViewCell
let rnd = getRandom(tmpPictures.count)
cell.cellLabel.text="?"
cell.initCard(tmpPictures[rnd])
tmpPictures.removeAtIndex(rnd)
numInactiveCards=0
}
}
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
let cell=collectionView.cellForItemAtIndexPath(indexPath) as! CollectionViewCell
if(!cell.isFlipped && cell.isActive )
{
cell.flipCard()
self.visibleCells.append(cell.cardPicture)
print("visiblecards: \(self.visibleCells) \n count:\( self.visibleCells.count)")
if(self.visibleCells.count>=2)
{
CheckIfSuitablePair(collectionView )
self.visibleCells.removeAll()
}
}
}
//checking if pair is good, if bad pair it unflips if good, checks for winning
func CheckIfSuitablePair(cv: UICollectionView)
{
let cmpResult=compareCards(visibleCells[0], card2: self.visibleCells[1])
for i in 0 ..< cv.numberOfSections()
{
for j in 0 ..< cv.numberOfItemsInSection(i)
{
let cell=cv.cellForItemAtIndexPath(NSIndexPath(forItem: j,inSection: i)) as! CollectionViewCell
if(cell.isActive && cell.isFlipped)
{
if(!cmpResult) //cards are different
{delay(delay_t){cell.flipCard()}}
else //cards are same
{
cell.isActive=false
self.numInactiveCards+=1
if(checkWin())
{updateWinningLabels()}
}
}
}
}
}
func checkWin()->Bool
{
if(numInactiveCards==pictures.count)
{return true}
return false
}
func updateWinningLabels()
{
timer.invalidate()
playbutton.setTitle("Play again", forState: .Normal)
playbutton.hidden=false
WinningLabel.hidden=false
}
func compareCards(card1:String , card2:String) -> Bool
{
if(card1==card2)
{return true}
else {return false}
}
func getRandom(range: Int)->Int
{
srand(1)
let random = arc4random_uniform(UInt32(range))
return Int(random)
}
}