I want to move the minus sign to the right. How do I do that?
Thanks!
I don't know if it's possible, but I'd start by looking into subclassing the UITableViewCell and overriding its layoutSubviews method.
But I don't believe you can, you only have access to the contentView, the accessoryView, the backgroundView, not the deleteConfirmationView. The closest thing you can find in UITableViewCell's reference is the boolean showingDeleteConfirmation.
So you could try subclassing the UITableViewCelland adding your own delete confirmation button where you want, by responding to willTransitionToState: when the new state is UITableViewCellStateShowingDeleteConfirmationMask.
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I'm trying to make a custom table view. I have a UIScrollView loaded up with UIViews. I would like to recreate the reusable cell functionality that a tableview has. And I'm wondering what might be a good way to do this.
I was thinking that when the UIViews are scrolled off screen I'll remove them from the Subview, and when I need another I'll just add it. However I'm not sure what method might be the best to do this in.
I could check to see the views location in scrollViewDidScroll: but I'm not sure if this would be the best thing to check over and over again. If anyone has any suggestions or helpful tips that would be really awesome.
Thanks!
One reason why scrollViewDidScroll is less than ideal choice is that your scroll view subclass will then need to be its own delegate. That will deny the users of that class the chance to be the delegate (easily, at least).
The better place to check this is in overriding layoutSubviews. And yes, like scrollViewDidScroll, it gets called a lot! But if you think about it, the only way to detect with certainty if any subview has been scrolled off, is to check when any scrolling occurs.
So the key is to be as efficient as you can checking. The first thing I'd try is fast enumeration of the subviews, asking if each frame transformed by contentOffset falls within the parent's bounds (using CGRectIntersectsRect). If not, add it to your reuse pool and remove it from superview.
Subclass UIScrollView and override setContentOffset. That's where the scrollViewDidScroll message comes from in the original UITableView, and that's where you can implement your own logic.
Edit: you might want to study the source code for PSTCollectionView, which is not a custom UITableView but a custom UICollectionView.
So I don't know what the best way to follow MVC is. Similar to the address books app, I want to have a UITableVeiewcell that has the ability to edit notes. I figured I would do that with a UITextView in a UITableViewCell subclass. My subclass has just that as a property, and a label that says "notes". I can see a few use cases that I need to consider,
1) when they are done editing and click outside or hit return.
2) when the text goes beyond the size of the cell I need to resize the cell.
Because my UITextView is in IB, is there a good way to define the delegate methods for the UITextView since my UITableView is in another ViewController subclass? Like how do I pass that information back?
Or, is it better to create my UITableViewCell subclass in code since it's just a couple of items so all my delegate and resizing code is done in the view controller class?
Thanks!
After text field editing was finished, you can store it's value in some dictionary in your controller. You can use cell's indexPath as key in this dictionary. In such way you will not lose your data with dequeue cells.
To resize cell you must call reloadData method and change rowHeight property of entire tableView or implement tableView:heightForRowAtIndexPath: delegate method to set needed row height to current cell.
I haven't use UIKit since iOS 3.1, so the second part of my answer can be out of date, but I hope it will help you =)
I have a custom UITableViewCell completely written in code (no IB), it has an accessory button that simply calls didSelectRowAtIndexPath on the table view, and it works correctly and the method is called without problems.
However, when I tap on the cell itself (not on the accessory view) nothing being called, why ?
EDIT: the code is huge to put here ... however, the custom cell contains a ton of labels, couple images and scroll view ...
This is a shot in the dark, but if each cell has many different objects on it (i.e. images, labels, etc) then it may not be working because those objects are what the user is hitting when they try to click a cell. Does the cell turn blue (indicate selection) at all? If not, try hiding/removing those objects for now and see if it works.
If that is the case, then what you may want to do is create an invisible cell or button that sits on top of the other objects and calls didSelectRowAtIndexPath from behind the scenes.
This should solve your problem:
Raise selection event (didSelectRowAtIndexPath) when subview of UITableViewCell is tapped
Try setting your view's userInteractionEnabled property to NO.
This will make it ignore all touch events, and then the views under it will be able to catch these events. - Felipe Sabino
I'd partially answer my question: the wide scroll view is preventing the cell from calling didSelectRowAtIndexPath, removing the scrollView will solve the problem, however, I want to call this method with the existence of the scrollView ... anyone got ideas would be highly appreciated ...
You must post your code to understand what have you done...You have to check out this example to understand whether your code is correct or not...
http://www.edumobile.org/iphone/iphone-programming-tutorials/impliment-a-custom-accessory-view-for-your-uitableview-in-iphone/
I'm trying to change the background view for cells that the user starts to drag with the handle out on the right hand side.
Apparently the selectedBackground view is not used in this state, is there any other solution?
This seems to be a tough one. It doesn't seem as if Apple has provided a way to notify the developer that the user has started reordering a table view cell. So I think this is what you'd have to do:
Subclass UITableViewCell.
Override the touchesBegan et al methods (this might get you started: http://devblog.wm-innovations.com/2010/03/30/custom-swipe-uitableviewcell/)
If you detect a "drag" touch event and the cell's showsReorderControl property (see http://developer.apple.com/library/ios/#documentation/uikit/reference/UITableViewCell_Class/Reference/Reference.html) returns YES, swap out the backgroundView, remembering the previous one.
When the touch event ends, restore the old view.
Realize that it's not as easy as above 4 steps.
Custom touch handling inside a tableview is possible but hard. You might have to temporarily disable touch events in the UITableView (climbing up the responder chain) to make this work.
I hope these pointers get you moving in the right direction, though.
I just need to know is it possible to change UITableViewCellEditingStyle image ?. If possible please tell me How to do that?
I don't see any delegate methods for changing the editing-style view.
You could change the editing button title with the delegate method -tableView:titleForDeleteConfirmationButtonForRowAtIndexPath:, however.
You could also override UITableViewCell and create a custom cell with UITableViewCellEditingStyleNone and a custom editing style behavior and appearance.
In case you're still interested you can actually get this to work by intercepting willTransitionToState and didTransitionToState in a subclass of UITableViewCell. The solution does involve "hacking" around in the cell view hierarchy. Look for the description of recursiveDescription on UIView on how to "dump" a hierarchy, but you will find a UIImageView of which you can change the .image property...
Fairly ugly hack, but does not actually use any private api.