enter image description here在调用realoadData（）后，我的集合视图中有一些已保存的图像，只显示第一个，其余的不在那里。
以下是我的collectionView中的一些代码： 我从directoryPath加载图像。 当他们来自相机时我会保存它们。
enter override func viewDidLoad() {
self.collectionView?.delegate = self
collectionView!.dataSource = self
print("loaded")
self.prepareUI()
images = []
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
// Get the Document directory path
let documentDirectorPath:String = paths[0]
// Create a new path for the new images folder
imagesDirectoryPath = documentDirectorPath.stringByAppendingString("/ImagePicker")
var objcBool:ObjCBool = true
let isExist = NSFileManager.defaultManager().fileExistsAtPath(imagesDirectoryPath, isDirectory: &objcBool)
// If the folder with the given path doesn't exist already, create it
if isExist == false{
do{
try NSFileManager.defaultManager().createDirectoryAtPath(imagesDirectoryPath, withIntermediateDirectories: true, attributes: nil)
}catch{
print("Something went wrong while creating a new folder")
}
}
if(names.isEmpty == false)
{
refreshTable()
}
}
deinit{
self.removeObservers()
}
func refreshTable(){
do{
images.removeAll()
titles = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(imagesDirectoryPath)
for image in titles{
let data = NSFileManager.defaultManager().contentsAtPath(imagesDirectoryPath.stringByAppendingString("/\(image)"))
let image = UIImage(data: data!)
images.append(image!)
}
self.collectionView?.reloadData()
}catch{
print("Error")
}
}
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
//1
let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! FlickrPhotoCell
if(searchBarActive == true)
{
cell.nameLabel.text = researchResults[indexPath.item]
cell.imageView.image = sFunc_imageFixOrientation(resultImages[indexPath.item])
}
else
{
cell.nameLabel.text = names[indexPath.item]
cell.imageView.image = sFunc_imageFixOrientation(images[indexPath.item])
}
cell.nameLabel.hidden = false
cell.frame.size = CGSizeMake(UIScreen.mainScreen().bounds.width/2 , UIScreen.mainScreen().bounds.width/2)
cell.imageView.frame = cell.frame
cell.backgroundColor = UIColor.clearColor()
cell.layer.borderColor = themeColor.CGColor
cell.layer.borderWidth = 4
cell.layer.cornerRadius = CGFloat(10.0)
print(images)
return cell
}
func filterContentForSearchText(searchText:String){
self.researchResults = names.filter({ (text:String) -> Bool in
return text.containsString(searchText)
})
}
//Suche Fotos für gesuchte items
func getSearchedFotos()
{
print(researchResults)
if resultImages.isEmpty == false
{
resultImages.removeAll()
}
for (var i = 0; i <= names.count - 1; i += 1)
{
for (var j = 0; j <= researchResults.count - 1; j += 1)
{
if(researchResults[j] == names[i])
{
resultImages.append(images[i])
}
}
}
print(images)
print(resultImages)
}
func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
if(numberToolbar != nil)
{
numberToolbar!.removeFromSuperview()
}
if searchText.characters.count > 0 {
self.searchBarActive = true
self.filterContentForSearchText(searchText)
self.getSearchedFotos()
self.collectionView?.reloadData()
}else{
self.searchBarActive = false
self.collectionView?.reloadData()
}
}
func searchBarCancelButtonClicked(searchBar: UISearchBar) {
if(numberToolbar != nil)
{
numberToolbar!.removeFromSuperview()
}
self.cancelSearching()
}
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
if(numberToolbar != nil)
{
numberToolbar!.removeFromSuperview()
}
resultImages.removeAll()
self.searchBar!.hidden = true
self.searchBarActive = false
self.collectionView?.reloadData()
self.searchBar!.performSelector("resignFirstResponder", withObject: nil, afterDelay: 0.1)
keyboardIsReal = false
}
func searchBarTextDidBeginEditing(searchBar: UISearchBar) {
}
func searchBarTextDidEndEditing(searchBar: UISearchBar) {
self.searchBarActive = false
self.searchBar!.text = ""
self.searchBar!.setShowsCancelButton(false, animated: false)
}
func cancelSearching(){
self.searchBarActive = false
self.searchBar!.text = ""
resultImages.removeAll()
self.collectionView?.reloadData()
}
最后一种方法是搜索特定项目。