I'm using storyboard to create a UITableView, loading up some data to recommend users to follow, and including a follow button inside the cell.
Only problem is, I'm not able to click the follow button inside the cell.
Here's the code for the TableView in my ViewController class (It isn't a TableViewController, it's a UIViewController that includes UITableViewDelegate and UITableViewDataSource):
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return followRecommendations.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let followCell = tableView.dequeueReusableCell(withIdentifier: "followCell", for: indexPath) as! FollowRecommendationTableViewCell
followCell.followButton.tag = indexPath.row
followCell.followButton.addTarget(self, action: #selector(self.buttonTapped), for: UIControlEvents.touchUpInside)
followCell.followRecommendationName.text = followRecommendations[indexPath.row].suggestedUserName
followCell.followRecommendationInterests.text = followRecommendations[indexPath.row].suggestedUserTasteString
let imageUrl = followRecommendations[indexPath.row].suggestedUserImage
followCell.followRecomendationImage.downloadedFrom(link: imageUrl)
return followCell
}
func buttonTapped() {
print("Tapped")
}
and here's the code for the TableViewCell class.
class FollowRecommendationTableViewCell: UITableViewCell {
#IBOutlet weak var followRecomendationImage: UIImageView!
#IBOutlet weak var followRecommendationName: UILabel!
#IBOutlet weak var followRecommendationInterests: UILabel!
#IBOutlet weak var followButton: UIButton!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
I've seen this question on StackOverflow before, but I wasn't able to fix the problem. Here are some things I've tried:
Numerous variations of enabling/disabling user interaction for the tableView, cell, content view, and button.
Moving the button to the front of the content view using this code: followCell.bringSubview(toFront: followCell.followButton)
I've tried the delegate/protocol method shown in this tutorial: http://candycode.io/how-to-properly-do-buttons-in-table-view-cells/
I just can't seem to get it to work.
Has anyone else had this issue and figured out a solution?
Thanks in advance!
I checked - your code works fine. You probably don't have IBOutlet set for your button on the cell, either in Storyboard, (or in separate .xib file if you use it). Open your storyboard and match the outlet from the cell to button, like this:
Related
I have a ViewControllertheir is a button at top right side. When i click that button i want to Show/Hide a UIView at bottom with size half of ViewControlleron same ViewController . Anyone help me. Thanks in advance.
If only Show/Hide a UIView is your requirement, below code will work:
class ViewController: UIViewController
{
#IBOutlet weak var viewHeightConstraint: NSLayoutConstraint!
#IBOutlet weak var customView: UIView!
override func viewDidLoad()
{
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.viewHeightConstraint.constant = self.view.bounds.height / 2
}
#IBAction func onShowHideButtonPress(_ sender: UIButton)
{
self.customView.isHidden = !self.customView.isHidden
}
}
Storyboard:
I am trying to make it when the users clicks on Button in a table view cell it takes them to a new view controller related to the current cell.
Try the below code,
Do this in cellForRowAt indexPath,
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell_Identifier", for: indexPath) as! UITableViewCell
cell.myButton.isUserInteractionEnabled = true
cell.myButton.tag = indexPath.row
cell.myButton.addTarget(self, action: #selector(didTapMyButton(_:)), for: UIControlEvents.touchUpInside)
return cell
}
And here is the button action,
func didTapMyButton(_ sender : UIButton) {
let selectedIndex = sender.tag // You can get index here, so according to the index you can navigate to particular ViewController
let nextVC = self.storyboard?.instantiateViewController(withIdentifier: "UIViewController_identifier") as! UIViewController
self.present(nextVC, animated: true, completion: nil)
}
Hope it helps ..
I hope someone can help me with this problem. Below is my tvOS app screenshot:
(source: mtiaz.com)
.
I am trying to do two things:
When the user scrolls down on their remote, the second item in the collectionView becomes automatically focused. I need to have it so that the first item is focused instead.
When the user manually shifts focus between items in the collectionView, I want the UI elements in the mid-section of the screen to get updated instead of having to press or select them individually.
Here is my code so far for this screen:
import UIKit
// Global variable
internal let g_CR1 = "channel_cell_01"
class DashboardVC: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
// outlets
#IBOutlet weak var collectionView: UICollectionView!
#IBOutlet weak var lblChannelName: UILabel!
#IBOutlet weak var imgChannelLogo: UIImageView!
#IBOutlet weak var txtChannelDescription: UITextView!
// variables
var staticData: [Channel] = []
override func viewDidLoad() {
super.viewDidLoad()
// sample channels
initializeSampleData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// MARK: - CollectionView Callbacks
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return staticData.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// Get or make a cell
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: g_CR1, for: indexPath) as! CollectionViewCell
// Configure
cell.imgView.backgroundColor = UIColor.black
cell.imgView.image = staticData[indexPath.row].chLogo
// Return.
return cell
}
func collectionView(_ collectionView: UICollectionView, shouldSelectItemAt indexPath: IndexPath) -> Bool {
return true
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let currentChannel = staticData[indexPath.row]
DispatchQueue.main.async {
self.lblChannelName.text = currentChannel.chName
self.imgChannelLogo.image = currentChannel.chLogo
self.txtChannelDescription.text = currentChannel.chDescription
}
}
}
I was able to answer point #2. Hopefully someone may benefit from this. However I am still stomped at #1.
func collectionView(_ collectionView: UICollectionView, didUpdateFocusIn context: UICollectionViewFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {
// test
print("Previous Focused Path: \(context.previouslyFocusedIndexPath)")
print("Next Focused Path: \(context.nextFocusedIndexPath)")
let currentChannel = staticData[(context.nextFocusedIndexPath?[1])!]
DispatchQueue.main.async {
self.lblChannelName.text = currentChannel.chName
self.imgChannelLogo.image = currentChannel.chLogo
self.txtChannelDescription.text = currentChannel.chDescription
}
}
Repeated on two projects and searched in vain so I hope someone can help...
Created a basic TableViewController and one TableViewCell. Run and press the first button, scroll down and other random buttons also show the same change?
TableViewController
import UIKit
class TableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 99
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ButtonCell", for: indexPath) as! ButtonCell
cell.rowLabel.text = "\(indexPath.row)"
cell.tapAction = { (cell) in
self.showAlertForRow(tableView.indexPath(for: cell)!.row)
}
return cell
}
// MARK: - Extracted method
func showAlertForRow(_ row: Int) {
let alert = UIAlertController(
title: "BEHOLD",
message: "Cell at row \(row) was tapped!",
preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Gotcha!", style: UIAlertActionStyle.default, handler: { (test) -> Void in
self.dismiss(animated: true, completion: nil)
}))
self.present(
alert,
animated: true,
completion: nil)
}
}
Table View Cell
// ButtonCell.swift
import UIKit
class ButtonCell: UITableViewCell {
var tapAction: ((UITableViewCell) -> Void)?
#IBOutlet weak var rowLabel: UILabel!
#IBOutlet weak var button: UIButton!
#IBAction func buttonTap(_ sender: AnyObject) {
button.setTitle("Correct", for: .normal)
tapAction?(self)
}
}
Lets begin with the basics. You don't need this:
cell.tapAction = { (cell) in
self.showAlertForRow(tableView.indexPath(for: cell)!.row)
}
You better use the apple framework:
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
showAlertForRow(indexPath.row)
}
Second create a method in you cell like
import UIKit
class ButtonCell: UITableViewCell {
var tapAction: ((UITableViewCell) -> Void)?
#IBOutlet weak var rowLabel: UILabel!
#IBOutlet weak var button: UIButton!
#IBAction func buttonTap(_ sender: AnyObject) {
button.setTitle("Correct", for: .normal)
tapAction?(self)
}
func createCell() {
button.setTitle("Your button title", for: normal)
}
}
and call the createCell method in your
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
...
cell.createCell()
...
}
Hope I could help but try to start with the basics here: https://developer.apple.com/reference/uikit/uitableviewdelegate
This is happening because you are dequeuing your UITableViewCells. In order to solve the problem you should use the prepareForReuse() method in your ButtonCell. You can save the states of all your buttons and when a cell is being dequeued you can just set the title of the button in this cell in the prepareForReuse() method.
I'm pretty new to swift but I've managed to follow along for the most part. However, there's an issue with my code that the code itself can't even identity apparently(I'm not receiving any error signs). I'm trying to click on a row from the table view to make it go to the following page but I don't think the code is recognizing the didselectrow method. Maybe one of you more experienced persons can help me out.
Here's the code:
import UIKit
import Foundation
class OnePercentersViewController: UIViewController, UITableViewDataSource
{
var copiedExecutiveArray : [String] = NSArray() as! [String]
var identities : [String] = NSArray() as! [String]
override func viewDidLoad()
{
super.viewDidLoad()
let copyExecutiveNames : ExecutiveArray = ExecutiveArray()
copiedExecutiveArray = copyExecutiveNames.executiveNames
identities = copyExecutiveNames.executiveNames
}
//how many sections in table
func numberOfSections(in tableView: UITableView) -> Int
{
return 1
}
//returns int (how many rows)
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return copiedExecutiveArray.count
}
//contents of each cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell")//UITableViewCell()
let personName = copiedExecutiveArray[indexPath.row]
cell?.textLabel?.text = personName
return cell!
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
let execName = identities[indexPath.row]
let viewController = storyboard?.instantiateViewController(withIdentifier: execName)
self.navigationController?.pushViewController(viewController!, animated: true)
print("button clicked")
tableView.deselectRow(at: indexPath as IndexPath, animated: true)
}
}
I haven't checked other parts of your code, but to make tableView(_:didSelectRowAt:) work, your ViewController needs to conform to UITableViewDelegate:
class OnePercentersViewController: UIViewController, UITableViewDataSource, UITableViewDelegate
Also you need to connect the delegate of the UITableView to your ViewController in your storyboard. Or you can do it in code, if you have an #IBOutlet to the UITableView. Anyway, not only dataSource, but also delegate.
And this is not a critical issue, but you can write the first two lines of the class as:
var copiedExecutiveArray : [String] = []
var identities : [String] = []
After spending a day and a half watching Youtube videos and reading comments to similar problems, tt took trial and error but I finally got it thanks to you guys!It finally clicked when I read that I had to connect the delegate to the ViewController through the storyboard, so thanks for that!
Here's the final code for those with similar issue:
import UIKit
import Foundation
class OnePercentersViewController: UIViewController,UITableViewDataSource, UITableViewDelegate
{
var copiedExecutiveArray : [String] = []
var identities : [String] = []
override func viewDidLoad()
{
super.viewDidLoad()
let copyExecutiveNames : ExecutiveArray = ExecutiveArray()
copiedExecutiveArray = copyExecutiveNames.executiveNames
identities = copyExecutiveNames.executiveNames
}
//how many sections in table
func numberOfSections(in tableView: UITableView) -> Int
{
return 1
}
//returns int (how many rows)
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return copiedExecutiveArray.count
}
//contents of each cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
let personName = copiedExecutiveArray[indexPath.row]
cell.textLabel?.text = personName
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
let execName = identities[indexPath.row]
let viewController = storyboard?.instantiateViewController(withIdentifier: execName)
self.navigationController?.pushViewController(viewController!, animated: true)
tableView.deselectRow(at: indexPath as IndexPath, animated: true)
}
}