UITableViewRowAction 标题作为图像图标而不是文本

Question

I want put the icon (image) instead of text in swipe actions in tableviewCell in Swift.

But i dont how to put the image instead of title text?

My code is below:

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]?  {

    var shareAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Share" , handler: { (action:UITableViewRowAction!, indexPath:NSIndexPath!) -> Void in
        // 2
        let shareMenu = UIAlertController(title: nil, message: "Share using", preferredStyle: .ActionSheet)

        let twitterAction = UIAlertAction(title: "Twitter", style: UIAlertActionStyle.Default, handler: nil)
        let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil)

        shareMenu.addAction(twitterAction)
        shareMenu.addAction(cancelAction)


        self.presentViewController(shareMenu, animated: true, completion: nil)
    })
    // 3
    var rateAction =    (style: UITableViewRowActionStyle.Default, title: "rate",im , handler: { (action:UITableViewRowAction!, indexPath:NSIndexPath!) -> Void in
        // 4

        let rateMenu = UIAlertController(title: nil, message: "Rate this App", preferredStyle: .ActionSheet)

        let appRateAction = UIAlertAction(title: "Rate", style: UIAlertActionStyle.Default, handler: nil)
        let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil)

        rateMenu.addAction(appRateAction)
        rateMenu.addAction(cancelAction)


        self.presentViewController(rateMenu, animated: true, completion: nil)
    })

    // 5
    return [shareAction,rateAction]
}

Can you someone pls help me on this?

Thanks in advance

Answer 1

There are two ways you can achieve this.

• Use Unicode characters in your text, if it serves your purpose, However unicode characters are limited set.
• Use emojis provided that it serve your purpose.

This is how you do it in the code

 override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
    let delete = UITableViewRowAction(style: .Default, title: "\u{267A}\n Delete") { action, index in
        print("more button tapped")
        self.tableView(tableView, commitEditingStyle: UITableViewCellEditingStyle.Delete, forRowAtIndexPath: indexPath)
    }
    delete.backgroundColor = UIColor(rgba: "#ef3340")

    let apply = UITableViewRowAction(style: .Default, title: "\u{2606}\n Like") { action, index in
        print("favorite button tapped")
        self.tableView(tableView, commitEditingStyle: UITableViewCellEditingStyle.Insert, forRowAtIndexPath: indexPath)
    }
    apply.backgroundColor = UIColor.orangeColor()

    let take = UITableViewRowAction(style: .Normal, title: "\u{2605}\n Rate") { action, index in
        print("share button tapped")
        self.tableView(tableView, commitEditingStyle: UITableViewCellEditingStyle.None, forRowAtIndexPath: indexPath)
    }
    take.backgroundColor = UIColor(rgba: "#00ab84")

    return [take, apply, delete]
}

This is what I could achieve by above mentioned ways -

Answer 2

In iOS 11 , Apple provides a way to help us do that. There are 2 functions you need to implement to swipe cell to left or right

public func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration?
public func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration?

For example:

func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
        let deleteAction = UIContextualAction(style: .normal, title:  "", handler: { (ac:UIContextualAction, view:UIView, success:(Bool) -> Void) in
            // Call edit action

            // Reset state
            success(true)
        })
        deleteAction.image = UIImage(named: "ic_delete")
        deleteAction.backgroundColor = .red
        return UISwipeActionsConfiguration(actions: [deleteAction])
    }

If you want to apply it for iOS < 11.0 , you can do it by a tricky way

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {

        let deleteAction = UITableViewRowAction(style: .default, title: "") { action, indexPath in
            // Handle delete action
        }
        (UIButton.appearance(whenContainedInInstancesOf: [UIView.self])).setImage(UIImage(named: "ic_delete"), for: .normal)
        return [deleteAction]
    }

Answer 3

Not Swift, but for anybody else who lands here looking for a solution... I've got good results with the following simple subclass:

@interface GSBTableViewRowAction : UITableViewRowAction
@property UIImage *icon;
@property UIFont *font;
+ (instancetype)rowActionWithStyle:(UITableViewRowActionStyle)style title:(NSString *)title icon:(UIImage*)icon handler:(void (^)(UITableViewRowAction *action, NSIndexPath *indexPath))handler;
@end

@implementation GSBTableViewRowAction
+ (instancetype)rowActionWithStyle:(UITableViewRowActionStyle)style title:(NSString *)title icon:(UIImage*)icon handler:(void (^)(UITableViewRowAction *action, NSIndexPath *indexPath))handler
{
    if (title.length) title = [@"\n" stringByAppendingString:title]; // move title under centerline; icon will go above
    GSBTableViewRowAction *action = [super rowActionWithStyle:style title:title handler:handler];
    action.icon = icon;
    return action;
}

- (void)_setButton:(UIButton*)button
{
    if (self.font) button.titleLabel.font = self.font;
    if (self.icon) {
        [button setImage:[self.icon imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] forState:UIControlStateNormal];
        button.tintColor = button.titleLabel.textColor;
        CGSize titleSize = [button.titleLabel.text sizeWithAttributes:@{NSFontAttributeName:button.titleLabel.font}];
        button.imageEdgeInsets = UIEdgeInsetsMake(-(titleSize.height/2 + 5), 0, 0, -titleSize.width); // +5px gap under icon
    }

The rowActionWithStyle:title:icon:handler is really just a convenience method - the 'secret sauce' is overriding the (private?) _setButton method [credit to Jayesh for this!].

This will give you an icon centered over the title, or just the icon alone if you leave the title nil. Unfortunately, you cant fiddle with the position of the title using button.titleEdgeInsets , like you can imageEdgeInsets , so best I can do is put the title immediately under the centerline (hence the '\\n') with a small gap under the icon (5px above). Results look like

As a bonus, you can also change the title font, to say something smaller, by setting the new font property. eg the above 'Add' action was accomplished with

GSBTableViewRowAction *add = [GSBTableViewRowAction rowActionWithStyle:UITableViewRowActionStyleNormal
                                                               title:@"Add"
                                                                icon:[UIImage imageNamed:@"Today-25"]
                                                             handler:^(UITableViewRowAction *action, NSIndexPath *indexPath){
                                                                 [self addToCalendar:self];
                                                                 [tableView setEditing:NO animated:YES];
                                                             }];
add.font = [UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
add.backgroundColor = UIColor.orangeColor;

Caveat: _setButton is private API, so YMMV... We're all hoping Apple will expose a public API to do what they apparantly do in their Mail.app [sic]

Answer 4

Try this

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {

    let remove = UITableViewRowAction(style: .Default, title: "      ") { action, indexPath in


        print("delete button tapped")
    }

    remove.backgroundColor = UIColor(patternImage: UIImage(named: "Delete")!)

    return [remove]
}

Answer 5

Check below working code

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> \[UITableViewRowAction\]? {


            let backView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: tableView.frame.size.height))
            backView.backgroundColor = UIColor(red: 239/255.0, green: 34/255.0, blue: 91/255.0, alpha: 1.0)

            let frame = tableView.rectForRow(at: indexPath)


            let myImage = UIImageView(frame: CGRect(x: 20, y: frame.size.height/2-20, width: 35, height: 35))
            myImage.image = UIImage(named: "delete_white")!
            backView.addSubview(myImage)

            let imgSize: CGSize = tableView.frame.size
            UIGraphicsBeginImageContextWithOptions(imgSize, false, UIScreen.main.scale)
            let context = UIGraphicsGetCurrentContext()
            backView.layer.render(in: context!)
            let newImage: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
            UIGraphicsEndImageContext()

            let deleteAction = UITableViewRowAction(style: .destructive, title: "           ") {
                (action, indexPath) in
                self.deleteCartItem(indexPath: indexPath )
                self.addWebtrendsForCart(path: "/Basket/EditBasket", description: "Edit Basket")
            }

             deleteAction.backgroundColor = UIColor(patternImage: newImage)
             return \[deleteAction\]
        }

Answer 6

trailingSwipeActionsConfigurationForRowAtIndexPath works from iOS 11 only and is completely not customizable. You can change background color of a button, but you cannot add an image with you own colors even if you use UIImageRenderingModeAlwaysOriginal .

I ended up using MGSwipeTableCell .

Answer 7

I was looking to do the same thing and found an answer here . It is a bit of a workaround.

Also, as seen from the iOS 9 betas, I think this will be possible, but I have not yet looked at the APIs.

Answer 8

If you use answer of "Apps Wise"( https://stackoverflow.com/a/32735211/6249148 ), you can use this table for common unicode characters: https://tutorialzine.com/2014/12/you-dont-need-icons-here-are-100-unicode-symbols-that-you-can-use

Or this one for ALL unicode characters: https://unicode-table.com/en/#control-character