I want to delete cell from the parse server so can anybody tell what should I write under func commiteditingstyle?
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let logCell:UITableViewCell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "Default")
let Log:PFObject = self.LogData.objectAtIndex(indexPath.row) as! PFObject
logCell.textLabel?.text = Log.objectForKey("Weight") as? String
return logCell
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
// delete object from parse, remove from list
}
}
When you wish to delete an object from the Parse cloud, the method deleteInBackground() should be used.
let Log:PFObject = self.LogData.objectAtIndex(indexPath.row) as! PFObject
Log.deleteInBackground()
You'd also want to remove the cell from the tableView itself, if isn't done automatically. You'd need to delete the PFObject from LogData first, and then reload the table. Good luck.
Related
I'm implementing a UITableViewController in my app and I want to add a possibility of sliding/swiping a cell on my tableview, exactly like in this answer: Swipe-able Table View Cell in iOS 9 but with a difference that it works only for one specific cell, not all of them. So far I have:
class MyTableViewController: UITableViewController {
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
override func tableView(tableView: (UITableView!), commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: (NSIndexPath!)) {
}
override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
var deleteAction = UITableViewRowAction(style: .Default, title: "Hello There!") {action in
print("some action!!")
}
return [deleteAction]
}
}
and it adds the swiping for all cells and I want to add it only to the 3rd one on my list (cells are not generated dynamically). Is there a way of doing that?
You can check the indexPath of the cell which is given as parameter and return the appropriate response based on that. Furthermore, you could also check the type of your cell using func cellForRowAtIndexPath(_ indexPath: NSIndexPath) -> UITableViewCell? if you have different cells or so.
Index path is a class. You can get the index of the current row from the indexPath using indexPath.row.
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
if ((indexPath.row % 3) == 0) {
return true
} else {
return false
}
}
I'm developing a small app using Swift, an UITableView to show custom cells, and then I would like to swipe to edit to do that I use the following code :
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! BasicCell
cell.Name.text = contacts[indexPath.row].Name
cell.Phone.text = contacts[indexPath.row].Phone
cell.ProfilPic.load(contacts[indexPath.row].ProfilPic!)
cell.ProfilPic.layer.masksToBounds = true
cell.ProfilPic.layer.cornerRadius = CGRectGetWidth(cell.ProfilPic.frame)/2.0
return cell
}
func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]?{
let delete = UITableViewRowAction(style: .Normal, title: "Delete") { action, index in
print("delete")
}
let done = UITableViewRowAction(style: .Default, title: "Done") { action, index in
print("done")
}
return [delete, done]
}
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// the cells you would like the actions to appear needs to be editable
return true
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
// you need to implement this method too or you can't swipe to display the actions
}
the problem is when I swipe a cell, buttons are not showing :
I have custom UITableViewCell with some content on it. While I am trying to swipe (to show delete custom button with image) It's simply not working, or if I'll try to do that 10 times, so I could see the swipe delete button action.
my code is:
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
//
}
func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
let cell = tableView.cellForRowAtIndexPath(indexPath) as! MessagesCell
let deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.Destructive, title: " ") { value in
// here some removing action
deleteAction.backgroundColor = UIColor(patternImage: UIImage(named: "swipeToDelete")!)
return [deleteAction]
}
This code will help
func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
return true
}
func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
// handle delete (by removing the data from your array and updating the tableview)
}
}
Thank you.
The issue was in IIViewDeckController that blocked swipe with its PanGesture
im making an app that currently saves a parse object to the local datastore, and to parse.com. I then run a query, save each object into an array so that i can display it in a table view. everything up to this point works well thanks to my past posted questions here and here.
so now the info is being displayed correctly as i had hoped. but now, i would like to be able to delete the entries as well. I would like to swipe the table and when delete is tapped, the object is unpinned from the local datastore, and that same item is removed from the cloud as well.
here is my current code for this :
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
// var lighthouse = self.lighthouses[indexPath.row]
var data = self.arrayToPopulateCells[indexPath.row]
let cell = tableView.dequeueReusableCellWithIdentifier("locationCell") as! lighthouseCell
let row = indexPath.row
cell.cellName.text = data.name
cell.cellPlace.text = data.locality
cell.cellDate.text = "\(data.date)"
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.selectedLighthouse = self.arrayToPopulateCells[indexPath.row]
self.performSegueWithIdentifier("lighthouseDetailViewSegue", sender: self)
}
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
self.arrayToPopulateCells.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
where "arrayToPopulateCells" is where the parse objects get stored during my query.
obviously im able to remove the cell at indexpath.row, but how to i take the information in that cell, and find the matching parse object to unpin and delete?
Using this delegate u can get reference of lighthouseCell and using that u can get variable and
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
var selectedCell = tableView.cellForRowAtIndexPath(indexPath) as lighthouseCell
gameScore.removeObjectForKey("playerName")
self.arrayToPopulateCells.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
using selectedCell and then
selectedCell.data.removeObjectForKey("keyName")
and for delete parse data we have Delete Object for particular key
Assuming the objects in your array are actual PFObject instances, then just call deleteInBackground before you remove them from your data array.
So:
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if (editingStyle == UITableViewCellEditingStyle.Delete) {
self.arrayToPopulateCells[indexPath.row].deleteInBackground() // Delete from cloud
self.arrayToPopulateCells.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
I am trying to delete a table view cell using swipe to delete, but I can't use the line I marked in my code, not sure why. My cells are being made by a Dictionary, with the key for the title and the value for the details.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell
//Create the cell by the dictionary favDict
for (key, value) in favDict{
cell.textLabel?.text = key
cell.detailTextLabel?.text = value
}
return cell
}
func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
return true
}
func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if editingStyle == UITableViewCellEditingStyle.Delete {
favDict.removeAtIndex(indexPath!.row)// Line that is giving the error says Int is not convertible for [String: String]
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
Resolution:
import UIKit
class ViewController2: UIViewController, UITableViewDelegate {
var dictKeys : [String]?
#IBOutlet var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
dictKeys = Array(favDict.keys)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
dictKeys = Array(favDict.keys)
return rowsInSec
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell
var key = dictKeys?[indexPath.row]
var data = favDict[key!]
cell.textLabel?.text = key
cell.detailTextLabel?.text = data
return cell
}
func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool {
return true
}
func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) {
if editingStyle == UITableViewCellEditingStyle.Delete
{
var key = dictKeys?[indexPath.row]
favDict.removeValueForKey(key!)
dictKeys?.removeAtIndex(indexPath.row)
rowsInSec--
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
}
You can't use;
favDict.removeAtIndex(indexPath!.row)
removeAtIndex is a instance method of NSMutableArray. For removing value from dictionary you can use:
favDict.removeValueForKey("yourkey")
EDIT:
The removing and loading data using Dictionary is little bit hard compared to NSMutableArray. Also you put a loop in the cellForRowAtIndexPath: . It'll load only the last object to every cell.
If you are still looking for Dictionary, you can do it like:
Implement the methods like:
var dictKeys : [Strings]?
override func viewDidLoad()
{
super.viewDidLoad()
dictKeys = Array(favDict.keys)
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell
var key = dictKeys?[indexPath.row]
var data = favDict[key!]
cell.textLabel?.text = key
cell.detailTextLabel?.text = data
return cell
}
func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!)
{
if editingStyle == UITableViewCellEditingStyle.Delete
{
var key = dictKeys?[indexPath.row]
favDict.removeValueForKey(key!)
dictKeys?.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}