UIMenuController with a custom item not working with UICollectionview

Question

I added a custom menu controller with a long press on UICollectionViewCell

[self becomeFirstResponder]; UIMenuItem *menuItem = [[UIMenuItem alloc] initWithTitle:@"Custom Action" action:@selector(customAction:)]; [[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObject:menuItem]]; [[UIMenuController sharedMenuController] setTargetRect: self.frame inView:self.superview]; [[UIMenuController sharedMenuController] setMenuVisible:YES animated: YES]; 

canBecomeFirstResponder Also called

 - (BOOL)canBecomeFirstResponder { // NOTE: This menu item will not show if this is not YES! return YES; } 

// This method is not called

 - (BOOL)canPerformAction:(SEL)action withSender:(id)sender { NSLog(@"canPerformAction"); // The selector(s) should match your UIMenuItem selector if (action == @selector(customAction:)) { return YES; } return NO; } 

I also implemented these methods

 - (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender { if([NSStringFromSelector(action) isEqualToString:@"customAction:"]){ NSLog(@"indexpath : %@",indexPath); UIAlertView *alertview = [[UIAlertView alloc] initWithTitle:@"warning.." message:@"Do you really want to delete this photo?" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil]; [alertview show]; return YES; } return YES; } - (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath { return YES; } - (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender { NSLog(@"performAction"); } 

Although it only shows the cut, copy and paste menu

Answer 1

I just spent two days trying to figure out the “right” way to do this, and bark the wrong tree with some suggestions that are around.

This article shows you the correct way to do this. I hope that by posting it here, someone will be saved for several hours.

http://dev.glide.me/2013/05/custom-item-in-uimenucontroller-of.html

Answer 2

Perhaps a little late, but I may have found a better solution for those who are still looking for this:

In the viewDidLoad of your UICollectionViewController add your element:

 UIMenuItem *menuItem = [[UIMenuItem alloc] initWithTitle:@"Title" action:@selector(action:)]; [[UIMenuController sharedMenuController] setMenuItems:[NSArray arrayWithObject:menuItem]]; 

Add the following delegate methods:

 //This method is called instead of canPerformAction for each action (copy, cut and paste too) - (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender { if (action == @selector(action:)) { return YES; } return NO; } //Yes for showing menu in general - (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath { return YES; } 

Subclass of UICollectionViewCell, if you have not already done so. Add the method that you specified for your element:

 - (void)action:(UIMenuController*)menuController { } 

Thus, you do not need any startFirstResponder method or other methods. You have all the actions in one place, and you can easily handle different cells if you call a common method with the cell itself as a parameter.

Edit: somehow uicollectionview needs this method to exist (this method is not called for your custom action, I think uicollectionview just checks for availability)

 - (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender { } 

Answer 3

You need to call the delegate functions from a custom UICollectionViewCell

Here is my working example code for Swift3

CollectionViewController

 override func viewDidLoad() { super.viewDidLoad() let editMenuItem = UIMenuItem(title: "Edit", action: NSSelectorFromString("editCollection")) let deleteMenuItem = UIMenuItem(title: "Delete", action: NSSelectorFromString("deleteCollection")) UIMenuController.shared.menuItems = [editMenuItem, deleteMenuItem] } override func collectionView(_ collectionView: UICollectionView, shouldShowMenuForItemAt indexPath: IndexPath) -> Bool { return true } override func collectionView(_ collectionView: UICollectionView, canPerformAction action: Selector, forItemAt indexPath: IndexPath, withSender sender: Any?) -> Bool { return action == NSSelectorFromString("editCollection") || action == NSSelectorFromString("deleteCollection") } override func collectionView(_ collectionView: UICollectionView, performAction action: Selector, forItemAt indexPath: IndexPath, withSender sender: Any?) { print("action:\(action.description)") //Custom actions here.. } 

Add the following functions to your custom UICollectionViewCell

 override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool { return action == NSSelectorFromString("editCollection") || action == NSSelectorFromString("deleteCollection") } 

Calling a delegate function from a cell (should be in your custom UICollectionViewCell)

 func editCollection() { let collectionView = self.superview as! UICollectionView let d:UICollectionViewDelegate = collectionView.delegate! d.collectionView!(collectionView, performAction: NSSelectorFromString("editCollection"), forItemAt: collectionView.indexPath(for: self)!, withSender: self) } func deleteCollection() { let collectionView = self.superview as! UICollectionView let d:UICollectionViewDelegate = collectionView.delegate! d.collectionView!(collectionView, performAction: NSSelectorFromString("deleteCollection"), forItemAt: collectionView.indexPath(for: self)!, withSender: self) } 

Answer 4

Swift 3 solution:

Just follow all the steps inside the UICollectionView class and assign this class to the UICollectionView object.

 import UIKit class MyAppCollectionView: UICollectionView { required public init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) addLongPressGesture() } func addLongPressGesture() { let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(MyAppCollectionView.longPressed(_:))) longPressGesture.minimumPressDuration = 0.5 self.addGestureRecognizer(longPressGesture) } func longPressed(_ gesture: UILongPressGestureRecognizer) { let point = gesture.location(in: self) let indexPath = self.indexPathForItem(at: point) if indexPath != nil { MyAppViewController.cellIndex = indexPath!.row let editMenu = UIMenuController.shared becomeFirstResponder() let custom1Item = UIMenuItem(title: "Custom1", action: #selector(MyAppViewController.custome1Method)) let custom2Item = UIMenuItem(title: "Custom2", action: #selector(MyAppViewController.custome2Method)) editMenu.menuItems = [custom1Item, custom2Item] editMenu.setTargetRect(CGRect(x: point.x, y: point.y, width: 20, height: 20), in: self) editMenu.setMenuVisible(true, animated: true) } } override var canBecomeFirstResponder: Bool { return true } } class MyAppViewController: UIViewController { override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool { // You need to only return true for the actions you want, otherwise you get the whole range of // iOS actions. You can see this by just removing the if statement here. //For folder edit if action == #selector(MyAppViewController.custome1Method) { return true } if action == #selector(MyAppViewController.custome2Method) { return true } return false } } 

Answer 5

In iOS 9 with Swift , to SHOW ONLY CUSTOMS ITEMS (without cutting by default, pasting, etc.), I managed to work only with the following code.

In the viewDidLoad method:

 let longPressRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(contextMenuHandler)) longPressRecognizer.minimumPressDuration = 0.3 longPressRecognizer.delaysTouchesBegan = true self.collectionView?.addGestureRecognizer(longPressRecognizer) 

Override method canBecomeFirstResponder :

 override func canBecomeFirstResponder() -> Bool { return true } 

Override these two related methods:

 override func collectionView(collectionView: UICollectionView, shouldShowMenuForItemAtIndexPath indexPath: NSIndexPath) -> Bool { return true } override func collectionView(collectionView: UICollectionView, canPerformAction action: Selector, forItemAtIndexPath indexPath: NSIndexPath, withSender sender: AnyObject?) -> Bool { return (action == #selector(send) || action == #selector(delete)) } 

Create a gesture handler method:

 func contextMenuHandler(gesture: UILongPressGestureRecognizer) { if gesture.state == UIGestureRecognizerState.Began { let indexPath = self.collectionView?.indexPathForItemAtPoint(gesture.locationInView(self.collectionView)) if indexPath != nil { self.selectedIndexPath = indexPath! let cell = self.collectionView?.cellForItemAtIndexPath(self.selectedIndexPath) let menu = UIMenuController.sharedMenuController() let sendMenuItem = UIMenuItem(title: "Send", action: #selector(send)) let deleteMenuItem = UIMenuItem(title: "Delete", action: #selector(delete)) menu.setTargetRect(CGRectMake(0, 5, 60, 80), inView: (cell?.contentView)!) menu.menuItems = [sendMenuItem, deleteMenuItem] menu.setMenuVisible(true, animated: true) } } } 

And finally, create selection methods:

 func send() { print("Send performed!") } func delete() { print("Delete performed!") } 

Hope this helps. :)

Greetings.