iOS 10: UITableViewCell's delete button custom height

问题

Using custom UITableViewCell, I'm trying to change the height of tableViewCell's delete button. I've tried all the solutions available here on SO.

Everyone has mentioned that in customTableViewCell class we need to override layoutSubviews method and iterate over self.subViews to find a subView which should be equal to UITableViewCellDeleteConfirmationView or in other iOS versions it is UITableViewCellDeleteConfirmationControl so I have used following code:

- (void)layoutSubviews
{
    [super layoutSubviews];

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationDuration:0.0f];

    for (UIView *subView in self.subviews) {
        NSLog(@"subview: %@", self.subviews);
        if([NSStringFromClass([subView class]) rangeOfString:@"Delete"].location != NSNotFound) {
            CGRect newFrame = subView.frame;
            newFrame.size.height = 87;
            subView.frame = newFrame;
        }
    }

    [UIView commitAnimations];
}

But self.subView only have two views i.e.

UITableViewCellContentView
UITableViewCellSeparatorView

How to get tableViewCell's delete button view in iOS 10+?

Edit

Here is my view hierarchy :

回答1:

For anybody who is struggling with the same problem.

In iOS10+ view hierarchy for UITableView's delete button has been changed. Now it comes under UITableView - UISwipeActionPullView - UISwipeActionStandardButton

So now instead of overriding custom UITableViewCell's layoutSubviews method, we need to iterate UITableView subviews in order to get UISwipeActionStandardButton. And I found tableView's willBeginEditingRowAtIndexPath delegate as an appropriate place,

- (void)tableView:(UITableView *)tableView willBeginEditingRowAtIndexPath:(NSIndexPath *)indexPath
{
    for (UIView *subview in tableView.subviews) {
        if ([NSStringFromClass([subview class]) isEqualToString:@"UISwipeActionPullView"]) {
            if ([NSStringFromClass([subview.subviews[0] class]) isEqualToString:@"UISwipeActionStandardButton"]) {
                CGRect newFrame = subview.subviews[0].frame;
                newFrame.size.height = 72;
                subview.subviews[0].frame = newFrame;

                //Other changes on this view can also be applied like
                subview.subviews[0].backgroundColor = [UIColor redColor];
                subview.subviews[0].layer.cornerRadius = 12;
                subview.subviews[0].layer.masksToBounds = YES;
            }
        }
    }
}

回答2:

Same code but works with Swift 5 and iOS 12+

 func tableView(_ tableView: UITableView, willBeginEditingRowAt indexPath: IndexPath) {
        for subview in tableView.subviews {
            if NSStringFromClass(type(of: subview)) == "UISwipeActionPullView",
                let button = subview.subviews.first,
                NSStringFromClass(type(of: button)) == "UISwipeActionStandardButton" {

                button.backgroundColor = .red
                button.layer.cornerRadius = 8
                button.layer.masksToBounds = true
                (button as? UIButton)?.contentHorizontalAlignment = .center
                (button as? UIButton)?.contentVerticalAlignment = .center
                (button as? UIButton)?.titleEdgeInsets = UIEdgeInsets(top: 6, left: 0, bottom: 0, right: 0)
                button.superview?.backgroundColor = UIColor(white: 0.97, alpha: 1)
                button.superview?.layoutIfNeeded()
            }
        }
    }

回答3:

For IOS 13 , the Position has been yet again change , not inside table view it is once again in _UITableViewCellSwipeContainerView . Thus you should iterate through that as well.Take a look below

   ([NSStringFromClass([subview class]) 
    isEqualToString:@"_UITableViewCellSwipeContainerView"]){

            for (UIView *deleteButtonSubview in subview.subviews){

                if ([NSStringFromClass([deleteButtonSubview class])
                     isEqualToString:@"UISwipeActionPullView"]) {



                    if ([NSStringFromClass([deleteButtonSubview.subviews[0] class]) isEqualToString:@"UISwipeActionStandardButton"]) {

                       //do what you want
                    }
                }

            }
        }

来源：https://stackoverflow.com/questions/46338159/ios-10-uitableviewcells-delete-button-custom-height

标签

objective-c

uitableview

ios10