Problem: I can't find which delete button that I pressed and tie that to the video in the cell so I can delete it on Parse.
I added a button programmatically in the cellForIndexAtIndexPath
self.deleteButton = UIButton(frame: CGRectMake(cell.frame.size.width / 1.5, 10, 30, 30))
let deleteImage = UIImage(named: "deleteVideoButton.png")
self.deleteButton.setBackgroundImage(deleteImage, forState: .Normal)
self.deleteButton.tag = indexPath.row
self.deleteButton.addTarget(self, action: "deleteCellFromButton", forControlEvents: UIControlEvents.TouchUpInside)
cell.addSubview(self.deleteButton)
The buttons show up on each cell display in the UICollectionView.
I have a function that calls the deleteCellFromButton(). I know that I should use the index.path but I can't call it in this function.
func deleteCellFromButton() {
var alert = UIAlertController(title: "Are you sure?", message: "This video will be deleted forever", preferredStyle: UIAlertControllerStyle.ActionSheet)
let confirmAction : UIAlertAction = UIAlertAction(title: "Ok!", style: .Default) { (action) -> Void in
var query = PFQuery(className: "Movie")
query.whereKey("username", equalTo: (PFUser.currentUser()?.username)!)
// here is where I think this goes query.whereKey("videoFile", equalTo: self.videoArray[index.path.row]) ???
query.findObjectsInBackgroundWithBlock { (objects: [AnyObject]?, error: NSError?) -> Void in
if error != nil {
print(error)
} else {
for object in objects! {
print(object)
object.deleteInBackgroundWithBlock({ (success: Bool, error: NSError? ) -> Void in
//put after delete code stuff here.
})
}
}
}
}
let cancelAction : UIAlertAction = UIAlertAction(title: "Cancel", style: .Cancel) { (error) -> Void in
}
alert.addAction(confirmAction)
alert.addAction(cancelAction)
self.presentViewController(alert, animated: true, completion: nil)
}
Change your target function to name with :
. Here you pass your button to your target function.
self.deleteButton.addTarget(self, action: "deleteCellFromButton:", forControlEvents: UIControlEvents.TouchUpInside)
And in your function use your button.tag
:
func deleteCellFromButton(button: UIButton) {
println(button.tag)
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.