MWPhotoBrowser - how to implement delete photo functionality? - photo

Question

I am using MWPhotoBrowser for my app. I need to give delete functionality to my users. Is there any way we can implement delete a particular photo or multiple photos functionality?
Quick help needed.

Answer 1

I did this in swift by adding this extension from outside of the library:
extension MWPhotoBrowser {
public override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
if let _ = valueForKey("_gridController") as? MWGridViewController {
let leftButtonItem = editButtonItem()
//leftButtonItem.tintColor = QorumColors.ThemeWhite
navigationItem.leftBarButtonItem = leftButtonItem
} else {
navigationItem.leftBarButtonItem = nil
}
}
public override func setEditing(editing: Bool, animated: Bool) {
super.setEditing(editing, animated: animated)
if editing {
navigationItem.leftBarButtonItem?.title = "Delete"
//navigationItem.leftBarButtonItem?.tintColor = QorumColors.Nickname
displaySelectionButtons = true
title = "Delete Photos"
let gridController = valueForKey("_gridController") as! MWGridViewController
gridController.selectionMode = displaySelectionButtons
gridController.collectionView!.reloadData()
} else {
let nav = self.navigationController as! TempPresentVC
let photosToDelete = nav.selectedPhotos
let afterButtonPress = {
//self.navigationItem.leftBarButtonItem?.tintColor = QorumColors.ThemeWhite
self.displaySelectionButtons = false
self.updateNavigation()
let gridController = self.valueForKey("_gridController") as! MWGridViewController
gridController.selectionMode = self.displaySelectionButtons
gridController.collectionView!.reloadData()
}
guard photosToDelete.count > 0 else {
afterButtonPress()
return
}
let title = "Delete Photo"
let message = "Are you sure you want to delete these photos?"
let action = "Delete"
let cancelAction = "Cancel"
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
let declineButton = UIAlertAction(title: cancelAction, style: .Default, handler: { (action: UIAlertAction) in
afterButtonPress()
})
let acceptButton = UIAlertAction(title: action, style: .Default, handler: { (action: UIAlertAction) in
afterButtonPress()
})
alert.addAction(declineButton)
alert.addAction(acceptButton)
UIApplication.topMostController().presentVC(alert) //private lib
}
}
}
class TempPresentVC: UINavigationController, MWPhotoBrowserDelegate {
var selectedPhotos = [Int]()
func photoBrowser(photoBrowser: MWPhotoBrowser!, photoAtIndex index: UInt, selectedChanged selected: Bool) {
if selected {
selectedPhotos.append(index.toInt)
} else {
selectedPhotos.removeObject(index.toInt)
}
}
}
This doesn't allow you to delete a photo in a single photo view mode, but starting from this code base that part would be easy to implement.
Beware, some of the stuff I use inside are private functions I wrote in my other classes, what they do should be clear though.