这有点傻,但我有一个自定义的 tableViewCell,它有一个 UIScrollView 和 pageControl。一切正常,但我不知道如何将 UITableViewCell 中正在更新的“pageControll.currentPage”发送/传递到我的 ViewImageViewController。
我没有使用“didSelectRowAtIndexPath”。每个单元格都有其独立的可变图像 scrollView 和 pageControl。
TableViewCell:完美运行
class FriendsFeedTableViewCell: UITableViewCell, UIScrollViewDelegate {
@IBOutlet weak var imageScrollView: UIScrollView!
@IBOutlet weak var pageControl: UIPageControl!
func scrollViewDidEndDecelerating(scrollView: UIScrollView) { //current page: works
let currentPage = (CGFloat(imageScrollView.contentOffset.x) / CGFloat(userImageView!.frame.size.width))
pageControl.currentPage = Int(currentPage)
}
}
单元格高度
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 470
}
表格 View Controller :
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell: FriendsFeedTableViewCell = tableView.dequeueReusableCellWithIdentifier("cell") as! FriendsFeedTableViewCell
//Grabbing array of images from master Image Array
//images array will vary 1-3: as of now
let images = masterImageArray[indexPath.row]
//ScrollView setup
let scrollView = cell.imageScrollView
scrollView.pagingEnabled = true
scrollView.scrollEnabled = true
scrollView.tag = indexPath.row
//setup the image array for scrollView
var imageViews = [UIImageView]()
imageViews.append(cell.imageView_1)
imageViews.append(cell.imageView_2)
imageViews.append(cell.imageView_3)
//hidding all ImageViews: will only show if needed
cell.imageView_1.hidden = true
cell.imageView_2.hidden = true
cell.imageView_3.hidden = true
//tells how many pages will be need
for var i = 0; i < images.count; i++ {
imageViews[i].image = images[i]
scrollView.contentSize = CGSize(width: 310 * (i + 1), height: 400)
cell.pageControl.numberOfPages = (i + 1) // tells how many pages
imageViews[i].hidden = false
}
//button: Tells which image in indexPath we want to view
cell.tapToViewButton.tag = indexPath.row
cell.tapToViewButton.addTarget(self, action: "buttonPressed:", forControlEvents: .TouchUpInside)
return cell
}
在我的 TableViewViewController 中,我使用了一个按钮,一旦点击它就会触发 preforemSegueWithIdentifier
func buttonPressed(sender: UIButton){
imageSenderTag = sender.tag
self.performSegueWithIdentifier("toViewImageVC", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "toViewImageVC"){
let viewImageVC: ViewImageViewController = segue.destinationViewController as! ViewImageViewController
//moves [image] to next VC
viewImageVC.imageArrayToPass = masterImageArray[imageSenderTag]
//FIXME: need to pass "currentPage" (Int) to newViewController
}
}
我一直想不通。我搜索过,但每个人都在使用我没有使用的“didSelectRowAtIndexPath”。
编辑:----------------
我尝试采纳@ozgur 和@Mundi 的建议,但没有奏效。
func buttonPressed(sender: UIButton){
self.performSegueWithIdentifier("toViewImageVC", sender: sender)
}
尝试过:@ozgur 推荐
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "toViewImageVC") {
let viewImageVC: ViewImageViewController = segue.destinationViewController as! ViewImageViewController
viewImageVC.mainUserImageToPass = masterUserPicsArray[imageSenderTag]
viewImageVC.imageArrayToPass = masterImageArray[imageSenderTag]
if let button = sender as? UIButton {
let indexPath = NSIndexPath(forRow: button.tag, inSection: 0)
let cell = resultsTable.cellForRowAtIndexPath(indexPath)
//ERROR
***viewImageVC.pageNumber = cell!.pageControl.currentPage***
}
}
}
错误:“UITableViewCell”类型的值没有成员“pageControl”
UITableViewCell,肯定有pageControl。为什么会这样?它引用了细胞信息,对吧?
试过:@Mundi 的推荐
let button = sender as! UIButton
let point = button.convertPoint(CGPointZero, toView: self.resultsTable)
let indexPath = self.resultsTable.indexPathForRowAtPoint(point)!
let idx = indexPath.row // use this for accessing your image view array
if (segue.identifier == "toViewImageVC") {
let viewImageVC: ViewImageViewController = segue.destinationViewController as! ViewImageViewController
viewImageVC.mainUserImageToPass = masterUserPicsArray[idx]
viewImageVC.pageNumber = (sender?.tag)! // EXIBIT: A
}
发送到 ViewImageViewController 的 pageNumber 发送单元格的 indexPath.row 而不是 indexPath.row 中 UIScrollView 的当前页面
最佳答案
假设您的 TableView 中只有一个部分;
首先,您可以在 buttonPressed:
方法中将 UIButton pressed 作为 segue 的发送者传递:
func buttonPressed(sender: UIButton) {
self.performSegueWithIdentifier("toViewImageVC", sender: sender)
}
其次,您可以在 prepareForSegue
方法中使用其 tag
值获取按钮所属的单元格:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let button = sender as? UIButton {
let indexPath = NSIndexPath(forRow: button.tag, inSection: 0)
let cell = tableView.cellForRowAtIndexPath(indexPath) as! FriendsFeedTableViewCell
...
viewImageVC.currentPage = cell!.pageControl.currentPage
}
}
如果您有多个部分;你可以获得@Mundi描述的indexPath
:
let point = button.convertPoint(CGPointZero, toView: tableView)
let indexPath = tableView.indexPathForRowAtPoint(point)!
关于ios - 将 Int(数字)从 uitableViewCell 传递到新的 ViewController,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33511477/