Okay What i want to do is position a custom cell so that the cell looks like only a portion of it is shown in the UITableView. When you swipe it to the left it goes to a new viewcontroller that allows the user to add details for a new cell. My question is how do we position the UITableViewCell to show only a portion of it in the tableView?
What i want to do is position a custom cell so that the row is not shown fully like about 1/4th or 1/2 its actual length only in the table view
here is an app with the functionality i'm trying to implement this is the image url as i can't post images yet
http://a3.mzstatic.com/us/r30/Purple6/v4/01/16/ec/0116ec99-0206-d125-7d27-d5956b918635/screen568x568.jpeg
I want to implement my cells just like how they implemented their expenses in cells, the cell is positioned according to the amount in it ,if the amount is high the cell is placed further to the left else only 1/4th of the cell is shown(empty cell no expense )
Can we achieve this by making an imageview in a customcell and then changing the x-axis of the image view according to the amount entered in the cell? Thanks in advance
For this, I would do it this way :
For each of my model cell I add a state, in the delegate of UItableView i use heightForRowAtIndex to set the size depends of the cell's state.
To not show extra view (when the cell is cliped) use :
[myCellview setClipToBounds:YES];
I think it should do the tricks. Even if it's not the best way to do it!
Solved it i Just had to add a scroll view to the cell's content view and then add a view containing the color to the scroll view. So its coding is similar to the swipe deletion in 'UITablView'
https://github.com/TeehanLax/UITableViewCell-Swipe-for-Options
this repository helped me out, i only had to make a few changes otherwise that was it thanks for all your suggestions :)
Related
Below attached image is representing my requirement:
In this image the yellow color UITableView will have list of different UITableViewCell items. In one of the UITableViewCell it has UICollectionView with its list of UICollectionViewCell items and the scroll direction for the UICollectionView is set to horizontal
Each UICollectionViewCell will have one UITableView (Highlighted in Red Color) and it will have its list of UITableViewCell (Highlited in Rose Color) items. Here, the UITableViewCell (Highlited in Rose Color) item can collapse/expand. Whenever the cell is collapse/expand the red table's content size is handled automatically. But, whenever the red table's content size is increased the collectionview size is not increasing.
I have added all relevant constraints to these UI elements. But, the content size or frame of the collectionview is not expanding when a tableview cell is expanded.
To understand better here i am breaking it down how the views are designed:
Yellow tableview embedded inside a UIViewController and it will have one simple UITableViewCell which has no custom class
To the cell programatically the UICollectionView will be added. This UICollectionView is placed in one xib file and it has embeded inside a UIView
UICollectionViewCell has been created in one xib and it will have UITableView element inside.
Also, UITableViewCell has its own xib to refer and this is the cell which will gets expand/collapse
I have tried modifying the intrinsicContentSize property to modify the UICollectionView property's height where it has embedded inside UIView element whenever the expand is happening. Please, refer the CardView.swift for the reference.
CardView.swift
I know the design is bit complex. But, what am i missing here?
Based on your requirement in the image, I just created a sample project here.
I did not use separate Xibs. However, I was able to achieve what you asked for.
You might have to handle the reload of the innermost tableView better based on your apps business logic.
Here's what I have implemented:
The top most view controller has a parent table view.
This table view cell consists of a child collection view.
The child collection view cell consists of a grand child table view.
The grand child table view is the one corresponding to the table view Highlited in Rose Color in the question.
To answer your question about the collection view not expanding: to expand the child collection view when the grandchild table view cell is tapped, I am reloading the parent table view by increasing the row height for the cell containing the collection view. Hence you don't have to worry about adjusting the constraints in auto layout
In case you want to add additional content into the child collection view cell, you can add a height constraint to the grand child table view with a low priority and modify that whenever you need to expand the content in the grand child table view.
if you want to achieve point 6, as suggested by #Ramy Al Zuhouri, you might have to call: collectionView.performBatchUpdates before collectionView.reloadData() to expand the cell size
Refer to the video below for better understanding
This doesn't necessarily solve your problem, but sometimes it's a matter of forcing the collection view to invalidate its layout and recalculating its size. I once received an answer to a TSI from an Apple enginner:
So this is old fashioned way of forcing a re-usable container (Collection || Table) to invalidate its layout. You may even be able to just call invalidate layout. There are oddities in the system with AutoLayout and animations that sometimes throw the system into an odd state. If we do the above the container and can invalidate its layout and make updates without need to re-calculate + incorporate animations. To summarize, calling performBatchUpdates with nil parameters can be useful if you need to force an update based on layout content (not necessarily datasource changes).
It looks like a hack to be used with caution, but it can be worth to give it a try. Whenever you need to recalculate the size of the collection view's cell to expand or shrink, you can do this:
UIView.setAnimationsEnabled(false)
collectionView.performBatchUpdates(nil, completion: nil)
UIView.setAnimationsEnabled(true)
collectionView.reloadData()
This forces a reload, and UIKit is able to recalculate the height of the cell given that you update the height. How? In my case I did by updating a height constraint, but there are multiple ways of doing this. However, it's intended that as the reload happens the collection view should be aware of the new cell height.
the good approach for this, you have to add collectionView in the tableViewHeader
then whenever you scroll up your tableView your collectionView section will also scroll up
to load cells on the specific indexes follow bellow steps:
if(indexpath.row == 0){
//load first tableView cell with collection view
}
else if (indexpath.row == 1){
//load second tableView cell with collection view
}
else{
//load table view cell here
}
Recently I have been trying to create a table view with different table view cells. What I want to do is that when users click on each table view cell, it shows an extra cell underneath the selected cell to handle user inputs and the extra section disappears when the cell is unselected.
I am fairly new to iOS development and I am wondering what would be the best way to achieve this. At the moment I am thinking of hiding the extra cells initially and displaying each of them when the cell above is selected.
Any help would be appreciated.
Apple has a great set of sample code that demonstrates the behavior you're looking for — displaying a cell beneath another cell when selected. This behavior is used in Calendar when displaying a date picker, and it's pretty much what you've described.
Question: Will each cell have an identical set of options?
If so, I'd consider including the user inputs as part of the source cell and adjusting the height of the source on selection. You can animate the cell's height changing using tableView's beginUpdates and endUpdates. This way, you avoid messing around with cell indices.
I have tried looking for an answer to this question but so far I haven't got any luck.
Context
I have a UITableView inside a standard UIViewController (NOT a UITableViewController..). I have subclassed UITableViewCell and all the cells in the tableview are from the same class.
Requirement
I would like to find an efficient way to resize the cells based on the scrolling of the tableview. For example, when the cell is at the bottom of the visible list, the height is X. When the cell moves up on the screen, its height should proportionally increase to 2X.
Additional Info
I am close to just ditch the UITableView way and start making my own control that would implement such a feat by subclassing a UIScrollView. However, I would like to see if it is possible before going this path. I did see some very interesting SO posts but nothing that would put me on the right path.
Any hint or help would be highly appreciated.
You would need to respond to the scroll view delegate method scrollViewDidScroll: and implement it to record the cell at the top of the table view and reload the table view. Then your table view delegate method tableView:heightForRowAtIndexPath: sets the cell height by the relationship between the index path and the top cell index path.
Your main issue is performance while reloading the table view all the time.
If you wanted to roll your own solution it would be along the lines of the above description anyway, but you would be able to be more efficient than the table view as the table view will call the tableView:heightForRowAtIndexPath: method once for every row for every reload in order to calculate the total height of the table content.
I have a particular goal in mind here, searching for it is a little hard. I am trying to accomplish this (This is a photoshopped screenshot):
I have everything in this view working, except for the split row for the Company Name/ Beginning of the field row. The "Company Name" field is just a textfield, all I really want to do is shrink that neato cell background to just go behind the right side.
Create a custom table view cell that has two subviews: the text field on the left and a UITableViewCell on the right as a subview of the main table view cell. A UITableViewCell is just a UIView so you can actually add it as a subview of any view. The main table view cell will have it's background color set to transparent.
So totally complicated custom cell comes with a totally ridiculous solution. I built a view for the cell that has the one field...and another UITableView.
That second UITableView has the "Beginning of the field" text, and its cell gets the background, and I hide the background of the main cell.
I had to play around with the nested table's size and position to get the row to display properly, and make sure that the lines in the background don't shift when it hits the nested table, but it came out perfect
You could try setting the frame property of your cells backgroundView to cover only have your cell's width. Address Book handles complex forms like this with a nice look and feel--you might want to see what they've done there..
One approach would be to define a custom table view cell, set its background transparent and add the UITextField on the left and a UIButton on the right (customize it to look like your other cells), as in your screenshot.
Has anyone seen a script like this or would be willing to help out with one?
Collapse/Expand Button
The uitableview cell to be expanded partially open (giving a preview in essence)
After the button is pressed then the cell of table would expand to show the entire contents (with a nice fade effect). If you chose to collapse the cell then it would return to the original offset (preview) height.
Has anyone seen anything like this? I've found a plethora of these scripts that fully expand or collapse, but not like this
Thank you for any help!!
you have to make custom cell class. While creating cell give the height of the cell as maximum you want (i.e when it expands) and when creating the custom cell drag a UIView and put all the contents in this view and hides this view. Then when button is being Tapped just you have to make it unhidden.