本文介绍了填写CollectionView单元格中的空白的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个这样的空白短语，它是从服务器加载的，例如我是____，____我使用名为 FillableTextView的库是怎么回事，所以当我在短语中添加[]时，将自动更改为具有可以单击空白空间的功能的空白空间，并且我具有具有多个结果的Cell的collectionView，而且从服务器加载的collectionView中的数据也像填充空白游戏一样，所以当我单击并拖动其中一个时，我想要将collectionView单元格放入空格以放置单元格的值。
I have a phrase with blank space like this, that loaded from server " for example Hi I'm ____, How are ___ " im using a library called "FillableTextView" so when i put [] in phrase will automatically change to blank space with a feature that can i click on the empty space and i have a collectionView with Cell that have multiple results, also the data in collectionView loaded from server its like fill in blank game, so i want when i click and drag one of collectionView Cell into blank spaces to put the value of cell.
我在这里将即时消息放在课堂上，问题是我不知道如何检测到我在空白处！
I put what im doing in class here, the problem is i don’t know how to detect that i’m above the white space!
FillInBlankVC类：UIViewController，FillableTextViewDelegate，UITextViewDelegate ，UIGestureRecognizerDelegate，UICollectionViewDelegate，UICollectionViewDataSource {
class FillInBlankVC: UIViewController, FillableTextViewDelegate, UITextViewDelegate, UIGestureRecognizerDelegate, UICollectionViewDelegate, UICollectionViewDataSource {
@IBOutlet weak var collectionView: UICollectionView!
@IBOutlet weak var phraseTextView: FillableTextView!
public var items_CollectionView: UICollectionView!
public var destinationTextView: FillableTextView!
private lazy var customLabel = UILabel()
private lazy var startFrame = CGRect()
private lazy var isReachedDest = Bool()
private lazy var isPanRunning = Bool()
private lazy var isPanAllowed = Bool()
private var indexPathForItem:IndexPath?
let textLabelTag: Int = 998
var cellTextLabel: UILabel?
var selectedVariable: String?
override func viewDidLoad() {
super.viewDidLoad()
configureCollectionView()
configureTextView()
self.items_CollectionView = collectionView
self.destinationTextView = phraseTextView
self.addGesturesForCollectionView()
}
//MARK: - UITextViewDelegate
func textViewDidChange(_ textView: UITextView) {
print(#function)
print("ℹ️ \(String(describing: textView.text))")
}
func textViewDidChangeSelection(_ textView: UITextView) {
print(textView.selectedRange)
}
//MARK: - Configure FillableTextView
func configureTextView() {
phraseTextView.text = "test test test [] test test test [] test test test [] test test test [] "
phraseTextView.placeHolderLength = 3
phraseTextView.blankType = .line
phraseTextView.delegate = self
phraseTextView.fillableTextViewDelegate = self
}//END
func optionsForIndex(_ textView: FillableTextView, index: Int) -> [FillableOptionItem]? {
return nil
}//END
func didSelectOptionForIndex(_ textView: FillableTextView, index: Int, text: String, userData: FillableOptionItem) {
print("didSelectOption \(text) with userData \(String(describing: userData))")
}//END
func textViewDidChangeText(_ textView: FillableTextView, index: Int, text: String, textSpace: TextSpace) {
print("index = \(index) text = \"\(text)\"")
}//END
func configureCollectionView() {
collectionView.delegate = self
collectionView.dataSource = self
}//END
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return dataClassArray.count
}//END
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "fillCell", for: indexPath) as! fillCell
cell.titleLabel.text = dataClassArray[indexPath.row]
cell.titleLabel?.tag = textLabelTag
return cell
}//END
func addGesturesForCollectionView() {
let longPressGest = UILongPressGestureRecognizer.init(target: self, action: #selector(longPressGestureAction))
longPressGest.delegate = self
longPressGest.minimumPressDuration = 0.2
items_CollectionView.addGestureRecognizer(longPressGest)
let panGesture = UIPanGestureRecognizer()
panGesture.addTarget(self, action: #selector(panGestureAction))
panGesture.delaysTouchesBegan = true
panGesture.delegate = self
items_CollectionView.addGestureRecognizer(panGesture)
}//END
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}//END
@objc fileprivate func panGestureAction (_ gestureRecognizer : UIPanGestureRecognizer) {
if !isPanAllowed || !customLabel.isDescendant(of: self.view) {
items_CollectionView.isScrollEnabled = true
return
}//END
let translation = gestureRecognizer.translation(in: self.view)
items_CollectionView.isScrollEnabled = false
if gestureRecognizer.state == .began {
startFrame = customLabel.frame
}
else if gestureRecognizer.state == .changed {
checkWhetherProductMovedDestination()
customLabel.center = CGPoint(x: customLabel.center.x + translation.x, y: customLabel.center.y + translation.y)
gestureRecognizer.setTranslation(CGPoint.zero, in: self.view)
}
else if gestureRecognizer.state == .ended {
caseMethodForPanCompletionWith(gestureRecognizer)
}
}//END
private func caseMethodForPanCompletionWith(_ gestureRecognizer:UIPanGestureRecognizer) {
if indexPathForItem == nil || !customLabel.isDescendant(of: self.view) {
return
}
let velocity = gestureRecognizer.velocity(in: self.view)
let magnitude = sqrt((velocity.x * velocity.x) + (velocity.y * velocity.y))
let slideMultiplier = magnitude / 200
let slideFactor = 0.1 * slideMultiplier
var finalPoint = CGPoint(x:customLabel.center.x + (velocity.x * slideFactor),
y:customLabel.center.y + (velocity.y * slideFactor))
finalPoint.x = min(max(finalPoint.x, 0), self.view.bounds.size.width)
finalPoint.y = min(max(finalPoint.y, 0), self.view.bounds.size.height)
print("This is the final Point x:\(finalPoint.x) and Y: \(finalPoint.y)")
UIView.animate(withDuration: 0.2,
delay: 0,
options: UIViewAnimationOptions.curveEaseOut,
animations: { [weak self] in
self?.customLabel.center = finalPoint
self?.checkWhetherProductMovedDestination()
},
completion: { [weak self] _ in
self?.panCompletionMethod()
})
items_CollectionView.isScrollEnabled = true
}//END
fileprivate func panCompletionMethod() {
if self.isReachedDest {
UIView.animate(withDuration: 0.2, animations: { [weak weakSelf = self] in
let destionViewCenterWithRespectMain = weakSelf?.getTheMainViewBasedCenterForDestination()
weakSelf?.customLabel.frame = CGRect(x: (destionViewCenterWithRespectMain?.x)! - 5, y: (destionViewCenterWithRespectMain?.y)! - 5, width: 10.0, height: 10.0)
}, completion:{ [weak weakSelf = self] _ in
weakSelf?.doSomeThingsAfterPanCompletion()})
}
else {
UIView.animate(withDuration: 0.2, animations: { [weak weakSelf = self] in
weakSelf?.customLabel.frame = (weakSelf?.constructFrameForIndex(indexPath: (weakSelf?.indexPathForItem)!))!
}, completion:{ [weak weakSelf = self] _ in
weakSelf?.doSomeThingsAfterPanCompletion()})
}
}//END
fileprivate func checkWhetherProductMovedDestination() {
isPanRunning = true
let draggingViewX = customLabel.frame.origin.x + customLabel.frame.size.width
let draggingViewY = customLabel.frame.origin.y
let destionViewCenterWithRespectMain = getTheMainViewBasedCenterForDestination()
let requiredDestFrame = CGRect(x: destionViewCenterWithRespectMain.x - destinationTextView.frame.width/2, y: destionViewCenterWithRespectMain.y - destinationTextView.frame.height/2, width: destinationTextView.frame.size.width, height: destinationTextView.frame.size.height)
isReachedDest = false
if (draggingViewY <= requiredDestFrame.origin.y + destinationTextView.frame.size.height && draggingViewX >= requiredDestFrame.origin.x) {
isReachedDest = true
}
}//END
fileprivate func getTheMainViewBasedCenterForDestination() -> CGPoint {
var destionViewCenterWithRespectMain = destinationTextView.center
if var destinationSuperView = destinationTextView.superview {
destionViewCenterWithRespectMain = CGPoint(x: destionViewCenterWithRespectMain.x + destinationSuperView.frame.origin.x, y: destionViewCenterWithRespectMain.y + destinationSuperView.frame.origin.y)
while let anotherSuperView = destinationSuperView.superview {
destionViewCenterWithRespectMain = CGPoint(x: destionViewCenterWithRespectMain.x + anotherSuperView.frame.origin.x, y: destionViewCenterWithRespectMain.y + anotherSuperView.frame.origin.y)
destinationSuperView = anotherSuperView
}
}
return destionViewCenterWithRespectMain
}//END
@objc fileprivate func longPressGestureAction(_ gestureRecognizer : UILongPressGestureRecognizer) {
if isPanRunning {
return
}
if gestureRecognizer.state == .began {
let point = gestureRecognizer.location(in: items_CollectionView)
guard items_CollectionView.indexPathForItem(at: point) != nil else {
return
}
if customLabel.isDescendant(of: self.view) {
customLabel.removeFromSuperview()
}
isPanAllowed = true
addCustomViewAt(point)
cellTextLabel = gestureRecognizer.view?.viewWithTag(textLabelTag) as? UILabel
}
else if gestureRecognizer.state == .ended {
isPanAllowed = false
if customLabel.isDescendant(of: view) {
customLabel.removeFromSuperview()
}
items_CollectionView.isScrollEnabled = true
}
}//END
fileprivate func addCustomViewAt(_ point:CGPoint) {
guard let indexPath = items_CollectionView.indexPathForItem(at: point) else {return}
if customLabel.isDescendant(of: self.view) {
print("Nil Indexpath or already view available>>>>>>> Returned")
return
}
indexPathForItem = indexPath as IndexPath
customLabel = UILabel.init(frame:constructFrameForIndex(indexPath: indexPath))
customLabel.contentMode = .scaleAspectFit
let itemAtIndexPath = dataClassArray[indexPath.row]
customLabel.text = itemAtIndexPath
customLabel.backgroundColor = #colorLiteral(red: 0.9640098214, green: 0.5248013139, blue: 0.1971936822, alpha: 1)
customLabel.textAlignment = .center
startFrame = customLabel.frame
self.selectedVariable = itemAtIndexPath
print("The value that has selected is \(selectedVariable ?? "")")
self.view.addSubview(customLabel)
}//END
fileprivate func doSomeThingsAfterPanCompletion() {
if customLabel.isDescendant(of: view) {
print("DONE")
customLabel.removeFromSuperview()
}
isReachedDest = false
isPanRunning = false
isPanAllowed = false
}//END
fileprivate func constructFrameForIndex(indexPath:IndexPath)->CGRect {
let attributes = items_CollectionView.layoutAttributesForItem(at: indexPath as IndexPath)
let sizeRect = attributes?.frame
let tempView = UIView.init(frame: CGRect(x: 0, y: 0, width: (sizeRect?.size.width)! + 20.0, height: (sizeRect?.size.height)! + 20.0))
tempView.center = CGPoint(x: (attributes?.center.x)! + items_CollectionView.frame.origin.x - items_CollectionView.contentOffset.x , y: (attributes?.center.y)! + items_CollectionView.frame.origin.y - items_CollectionView.contentOffset.y)
if var theSuperView = items_CollectionView.superview {
tempView.center = CGPoint(x: tempView.center.x + theSuperView.frame.origin.x, y: tempView.center.y + theSuperView.frame.origin.y)
while let anotherSuperView = theSuperView.superview {
tempView.center = CGPoint(x: tempView.center.x + anotherSuperView.frame.origin.x, y: tempView.center.y + anotherSuperView.frame.origin.y)
theSuperView = anotherSuperView
}
}
return tempView.frame
}
}
我推送源代码进入github：
i push the source code into github:https://github.com/ghassanjaa/Fill_In_Blank_Game
推荐答案
您可以拖放视图并检查视图的矩形是否位于填空中
You can drag and drop the view and check rect of the view is inside the "Fill in the blank"
let point = CGPointMake(20,20)
let someFrame = CGRectMake(10,10,100,100)
let isPointInFrame = someFrame.contains(point) //Replace point with frame
可能会帮助您。
这篇关于填写CollectionView单元格中的空白的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！