Actually, I am implementing a dynamic Question-Answer form in which table cells which load with dynamic fields (like., Drop Down, TextField, GridView, etc.,) For this in the cell I created one label for Question and one blank view to render dynamic content of Answer field. If I clicked on the label or on the cell I am able to reach to didSelectRowAt TableView method but if I clicked on dynamic content (like., Inside textField or on the button) not able to reach on didSelectRowAt. Not getting how to tackle this.
Try setting userInteractionEnabled = NO
This will avoid all the touch events for that particular control. and the events will be handled by the next responder in chain.
Related
I trying to make my app accessible, in my interface I have a UILabel and a UITableView, the tableView have a selectedRow. The selectedRow is the row in the middle of table view, for example is the row 50 if I have 100 row.
My problem is when I swype in screen to go to my next element, in this case when I go from label to tableView, the focus go to the first index and not to my cell was selected.
How I can fix that?
Assuming you have only a label and a table view, the problem boils down to keep in mind the latest position of the cell when you move from the label to the table view.
The following algorithm may be used to solve this problem :
Create a temporary index path variable (tmpIP) containing the index path of the selected cell.
When the label loses the focus, the table view selects the cell with the latest tmpIP index path. The variable value is nil if no cell was selected before the label selection.
Take a look at the UIAccessibilityFocus informal protocol to handle the focus of an accessible element.
I have got a TableView and each cell is covered by a Text View.
I think that because of this reason I can't select any cell.
Whenever I try to print it I don't get anything:
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var i = Int()
i = indexPath.row
print("i=\(i)")
}
**Its print and not println because of Swift 2.0.
Please ensure following:
You are correctly setting your view controller as delegate of the table view.
Your touches are intercepted by text view and are not reaching underneath cell. To fix this set userInteractionEnabled to false in cellForRowAtIndexPath: and set it back to true in didSelectRowAtIndexPath:.
Take a look at UITextView's userInteractionEnabled, multipleTouchEnabled, and exclusiveTouch. Those properties alter whether or not a view receives touches; if it doesn't, the touches get passed to the view behind it (or at least I think that's how it works). I forget where it is, but there's also a method that's called to ask a view which view should be the target of a specific touch, which would allow you to explicitly tell it to send them to the underlying view.
However, from a design perspective, I would re-evaluate having a UITextView on top of a UITableViewCell - the text view is a scroll view and the cell is in a scroll view, so they will always conflict. UILabel is generally more appropriate for putting in a text view.
For those who are using storyboard just uncheck User Interaction Enabled and Multiple Touch as showing below in the screenshot:
I have listed below points for your solution.
you need to check delegate is connected to your view controller.
next you need to check table view selection is enabled for your table view you can check it from table view attributed inspector.
next make sure user interaction is enabled for your text view.
Hope it will be the right solution for you.
What is the logic i should follow to integrate a like button in a tableview cell?
How do you update a text label inside the cell signaling how many likes it has in real time IE: when you click the like button it either adds a like or removes a like?
The button also is highlighted when current_like = true
and not highlighted when current_like = false
Where do I update that kind of stuff?
How can you update a cells label and display the new label from within the cell? or is it NECESSARY to reload cell for row at Index Path?
The two main problems/steps you have to achieve are:
- Update the label with the new like
- Update the datasource of the table to keep the data persistent.
So, what I would make:
Set your custom UITableViewCell as target for the Button, so the cell can know when the button was clicked. In the target function/selector you should update the label.
Now, you have to inform the datasource of your table that the cell has a new like. You can create a protocol in UITableViewCell and set the TableDataSource as its delegate. Then, when the button was clicked you can notify the delegate.
You can achieve the same behavior with NSNotificationCenter, instead delegation.
Regards ;)
To change the cell's content without reloading you need to create a pointer to that cell. You can change your cell's parameters directly using a pointer without reloading cell. So it would be something like
self.myCell.label.text = something
And to assign the pointer to your cell you must put something like this in your cell adding method:
self.myCell = yourLikeCounterCell
The layout for one of my View Controllers is such: I have a scroll view embedded inside my VC. Inside my scroll view, I have a table view that consists of 5 cell. The first 3 cells consist of a textfield thats pulls its text from a dictionary and this changes depending on certain situations. These textfields are editable and so tapping on them brings up the keyboard, the issue however is that I would like my view to scroll when I tap on the text field because right now they keyboard hides the the third editable text field. Another issue is that at the moment, clicking outside teh table view doesnt cause the keyboard to be dismissed and so the only way of dismissing the keyboard is tapping on the return key. What I would like to happen is that when I tap on either one of the 3 editable fields, the scroll view ought to scroll up a certain number that I define (this is so that I can define how much to scroll depending on which row is currently selected). One of the issues I'm facing is that I can't directly reference these textfields in my VC since they're all created through one prototype cell. My thinking was that I could create a dictionary with the 3 textfields as keys and then the scrollview y coordinates as values and then use that. However , I wasn't sure how to do this in my situation (with the prototype cells). Would really appreciate if someone could show me some sample code on how to do this.
You can reference your text fields by calling cellForRowAtIndexPath: to get the UITableViewCell, then calling viewWithTag: to get your UITextField. Just assign the text fields a tag number. Also, set the text field's delegate to be your view controller so that you can respond to a user tapping to edit text.
I've got a custom UITableViewCell that has a label and a UIPickerView. Display works fine, but when I want to select a value in the Picker, the TableView scrolls. What can I do so that the gestures in the cell go to the Picker instead of the whole TableView?
The only solution I could come up with was to set the whole TableView to scrollEnabled = NO. This works for the Picker, but now I can't get to the cells under the custom cell. Control has to be more fine-grained.
If you can get hold of the UIGestureRecognizer for each of the two gestures, and tell one it needs to wait for the other to fail. With one in every cell, that becomes over-wieldy.
Perhaps you should add a control or have the accessory view "bring up" the picker, and then dismiss it when done.