I have a uitapgesturerecognizer, for a uiview. I have 30 of these uiviews in a scrollview. Also in each of these views there is a label with different words in it for each view. Now when I hit a tap gesture recognizer, I want to access the text from the label for that particular view. Whats happening is I'm printing the words of the last view in the index. Can someone show me how I can access each view in each index.
open var Name: UILabel!
open func ynCategoryButtonClicked(_ sender: UITapGestureRecognizer) {
guard let text = Name.text else { return }
ynSearch.appendSearchHistories(value: text)
self.delegate?.ynCategoryButtonClicked(text: text)
}
The place where you are assigning your tapGesture to your "UIButtonView", add this line:
yourButton.accessibilityHint = "YourText"
And In your "buttonTapped()" method get the text like this:
let yourText = "\(sender.accessibilityHint)"
Hope this will help!
Honestly, it sounds like you should be using a UITableView. Either way though, you should alter your delegate method ynCategoryButtonClicked to also pass a reference to itself (so something like delegate?.ynCategoryButtonClicked(text: text, ynCategory: self)). Then if you go the TableView route you can find the index by using indexPath(for:UITableViewCell). Or, if you stick with the scrollview, you should be able to maintain an array of the views, and just search through them for the ynCategory.
Related
In my class I have 11 UITapGestureRecognizers in an array textViewRecognizer attached to 11 out of 100 UITextFields in an array boxArray. When a Textfield is tapped containing a UIGestureRecognizer it runs tappedTextView where I try to get the index of the first responder.
However, due to some weird ordering in how things are executed, the action function only gives me the first responder of the previous first responder to the one that was just tapped.
Also, I have to double tap to even select the text field I was going for! I need to use the tap function and not the text delegates so this has been a real headache.
I have...
#objc func tappedTextField(_ sender: UITapGestureRecognizer) {
for i in 0...99 {
if (boxArray[i]?.isFirstResponder)! {
if let index = boxArray.index(of: boxArray[i]) {
print(index)
break
}
}
}
}
in my viewDidLoad I have
for i in 0...10 {
textFieldTapRecognizer[i].addTarget(self, action: #selector(self.tappedTextField(_:)))
}
In my class I have
I want to set 11 out of 100 textFields to have this a tap recognizer depending on some conditions (I'm just going to use a regular for loop here)
for i in 0...10 {
boxArray[i]?.addGestureRecognizer(textFieldTapRecognizer[i])
}
Is there anyway I can get it to give me the actual first responder, after the tap was made?
Is there anyway to go around the double tap to select the text field that has a UITapGesture?
Any help is greatly appreciated.
Edited: properly named functions
It sounds like you want to remove the automatic editing behavior on a UITextView. You can grab more control over that with the textViewShouldBeginEditing(_ textView: UITextView) -> Bool UITextViewDelegate method, documented here.
If you return false for that method, this should avoid needing a double tap to get to your gesture recognizer. Depending on your use case, you can then "allow" the tap to go to the text view by returning true for the textView you want to be actually edited.
While I'm not 100% clear on the first responder part of your question, since the textView won't be grabbing first responder if it's not starting it's editing mode, this should address that concern I believe. Good luck!
I would add a Tag to my UITextView and set the UITextViewDelegate to my ViewController.
Then I would add the following Delegate method:
func textViewShouldBeginEditing(_ textView: UITextView) -> Bool {
print("Textview tag: ", textView.tag)
return false
}
I have a UIViewController with several UITextFields. When tap one text field, it should present the barcode scanning view controller. Once the scanning is completed, my barcode scanning viewcontroller is disappearing (used "dismissViewcontroller") and the scanned value should entered into the text field I tapped. This is working fine. I have set the delegate for each text field like this.
[field addTarget:metrixUIViewControllerIn action:#selector(executeScriptOnTextFieldChange:) forControlEvents:UIControlEventEditingChanged];
The problem is this :
Lets say I have set an alert to display inside this executeScriptOnTextFieldChange method. Once I tapped on the 1st text field, then the barcode scanner comes. Once I scanned barcode scanner closes and set the value for the first text field and fire the alert.Thats ok. But then if scanned by tapping the 2nd textfield and the string will set to that textfield and fire the alert related to 2nd textfield also fire the alert related to first textfield as well. I want to stop happening this. Is there any way to disable the delegate for one textfield? This happens because I am refreshing the view in the viewDidAppear. But I have to do that as well. Please help me.
UIControlEventEditingChanged for a textField can fire at many different events that are not even directly related to that textField, but related inderectly.
For instance, when your ViewController is presenting the barcodeScanner it may trigger a "resignFirstResponder" event on the textField. Also when the 2nd textField is tapped, cause the 2nd becomes first responder and the 1st suffers a "resignFirstResponder".
I suggest trying to use a UITapGestureRecognizer in your textField instead. Example:
Swift 4
#IBOutlet weak var textField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
self.textField.tag = 1
self.textField.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(fireTextField(_:))))
}
#objc func fireTextField(_ sender: UIGestureRecognizer){
let view = sender.view
guard view != nil else{
//Do nothing
return
}
let condition = view!.tag == 1
if condition{
//or do whatever other stuff you need
self.textField.becomeFirstResponder()
}else{
//Whatever for other textFields
}
}
This way, you could use the "tag" attribute to determine which textField is firing and so adjust "condition". You could also filter the flow with a switch using the "tag".
Not sure if any of this will really help as I would need more info about the flow you need to accomplish. Hope it does help!
I am really getting disappointed that's why I ask this question, I found tutorials online for Collapsible TableView but they are with populating the cells with an array of Strings or something similar.
I want to make an Accordion like this with Swift 3,
for some days already I tried a lot of things with UITableViewController because apparently that's the only thing you can make collapsible if you want different cells.
Anyway I started to do it but as I asked my question here I cannot show different UIs in each Cell of each Section.
I am sure there's a way to do it, anyone has any suggestions how to make this work?
I thought maybe there's another way to do it (e.g. with ScrollView or something)
Here is how you could implement it with UIStackView:
Add a vertical UIStackView via storyboard
Add a UIButton as the first subview within the UIStackView
Add some UILabels as the second, third... subview within the UIStackView
Add an IBAction for the UIButton (the first subview)
Implement the IBAction like this:
#IBAction func sectionHeaderTapped(sender: UIButton) {
guard let stackView = sender.superview as? UIStackView else { return }
guard stackView.arrangedSubviews.count > 1 else { return }
let sectionIsCollapsed = stackView.arrangedSubviews[1].hidden
UIView.animateWithDuration(0.25) {
for i in 1..<stackView.arrangedSubviews.count {
stackView.arrangedSubviews[i].hidden = !sectionIsCollapsed
}
}
}
Create multiple UIStackViews like this (you can always use the same IBAction for the UIButton) and embed all of them in a parent (vertical) UIStackView to create a view like in your screenshot.
Feel free to ask if anything is unclear.
Result:
So far I have a grid of buttons and have attached a pan gesture recognizer to the view. I can track the events and get the location of the finger as it moves but there doesn't seem to be the equivalent of a "mouseEnter" message to use to get info about or control properties (such as the highlighting) of the other buttons I pass over.
Am I missing something? How can I accomplish, say, highlighting the buttons under the users' fingers as they pan over them? Does cocoa touch support this or must something else be done?
Thanks.
You are right, there is no such event. Also UIButton events won't help you either, because those require to actually start gesture inside. What you can do instead is to get location of the point you are currently dragging:
func panDetected(sender : MoreInformativeGestureRecognizer) {
let touchPoint = sender.locationInView(self.view)
}
And now, when you have the point, you can iterate on all the buttons you have and check if the point is inside the button:
let buttons = [UIButton]
let lastActiveButton = UIButton?
...
// Iterate through all the buttons
for button in buttons {
// Check area of the button against your touch
if CGRectContainsPoint(button.frame, touchPoint) {
// You are inside the touch area of the button
// Here, you can for example perform some action if you want, store information
// about the button so you don't do it multiple times etc.. your call :)
self.lastActiveButton = button
}
}
This way you can detect then you go in and out and do whatever you want with events. Hope it helps!
UIButton inherits from UIControl which has a number of events
Have you tried that? You can add a listener to those events, either through nib/storyboard or through code (look under discussion to see how to do this)
I have a json file containing an array of dictionaries:
"question":"Question text",
"answers":["Yes", "No"],
"answerTracker":["1a", "1b"]
I have created a Question Class & an Answer Button View Class to display the questions & answers in the view.
In the view controller I have so far displayed the questions, created the answer buttons, and finally, added a tapGestureRecogniser to each button.
func answerTapped(gesture:UITapGestureRecognizer) {
// Get access to the button that was tapped
let selectionButtonThatWasTapped:SelectionButtonView? = gesture.view as? SelectionButtonView
if let actualButton = selectionButtonThatWasTapped {
// Find out the index for the button that has been tapped
let selectionTappedIndex:Int? = find(self.selectionButtonArray, actualButton)
**// Find the answer tracker for the button that has been tapped?**
// Append the tracker for the selected button to the User Generated Code
if let actualAnswerTracker:String = self.answerTracker as String! {
self.userGeneratedCode.append(actualAnswerTracker)
}
In the tapGestureRecognizer method above I now need to find the corresponding answerTracker (String) for the answer button that is tapped (UIView) but can't find a way? The answerTracker string corresponding to the tapped answer is to be appended into a String array property called userGeneratedCode.
Any suggestions?
you do not need to add a tapGestureRecogniser to a button, you can add a target and selector to button anyway. If you want to know which button is pressed, you can use tag property on UIButton to check against.