When I try and scan a card with Card.IO. it does not bring up the camera let alone the green lines around it. When I run this code and press the button it does not show the camera in the view controller. Any ideas ? The sample works fine in io8 in obj-C .
#IBAction func PressScan(sender: AnyObject) {
var CardScanner : CardIOPaymentViewController = CardIOPaymentViewController()
CardScanner.modalPresentationStyle = UIModalPresentationStyle.FullScreen
self.presentViewController(CardScanner, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
CardIOPaymentViewController.preload()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func userDidProvideCreditCardInfo(cardInfo: CardIOCreditCardInfo!, inPaymentViewController paymentViewController: CardIOPaymentViewController!) {
}
func userDidCancelPaymentViewController(paymentViewController: CardIOPaymentViewController!) {
}
Is there something in the plist file I need to amend to allow camera access for iOS8 ?
Solution is here: https://github.com/card-io/card.io-iOS-SDK/issues/76#issuecomment-65856792
Namely:
You are not initializing CardIOPaymentViewController correctly. It should be
var CardScanner : CardIOPaymentViewController = CardIOPaymentViewController(paymentDelegate: self)
Related
I'm trying to save a bool value to UserDefaults from a UISwitch, and retrieve it in another view. However, I've tried following multiple tutorials and stack answers and none seem to work.
This is how I'm saving it:
class SettingsViewController: UITableViewController {
#IBOutlet weak var soundSwitchOutlet: UISwitch!
#IBAction func soundSwitch(_ sender: UISwitch) {
UserDefaults.standard.set(soundSwitchOutlet.isOn, forKey: "sound")
}
and this is how I'm trying to retrieve it in another view:
if let savedValue = UserDefaults.standard.bool(forKey: "sound") {
boolValue = savedValue
}
//this is inside viewDidLoad and "boolValue" was declared outside viewDidLoad//
For a reason this code is giving me errors and none of the things I've tried have worked. How can I save a bool to UserDefaults and retrieve it in another view?
Edit: I think I fixed the first part. However, the way I'm retrieving the boolean seems to be totally wrong. Also: No other stackExchange answer responds to what I'm asking, at least not in swift.
As Leo mentioned in the comments bool(forKey returns a non-optional Bool. If the key does not exist false is returned.
So it's simply
boolValue = UserDefaults.standard.bool(forKey: "sound")
Calling synchronize() as suggested in other answers is not needed. The framework updates the user defaults database periodically.
Do it like this.
In your first view controller.
create an IBoutlet connection to your UISwitch
And then the action for your UISwitch. so in the end, your first view controller should look like this.
import UIKit
class FirstViewController: UIViewController {
#IBOutlet weak var myswitch: UISwitch! // Outlet connection to your UISwitch (just control+ drag it to your controller)
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
#IBAction func myswitchAction(_ sender: Any) { // Action for your UISwitch
var myswitctBool : Bool = false // create a local variable that holds your bool value. assume that in the beginning your switch is offed and the boolean value is `false`
if myswitch.isOn == true { // when user turn it on then set the value to `true`
myswitctBool = true
}
else { // else set the value to false
myswitctBool = false
}
// finally set the value to user default like this
UserDefaults.standard.set(myswitctBool, forKey: "mySwitch")
//UserDefaults.standard.synchronize() - this is not necessary with iOS 8 and later.
}
}
End of the first view controller
Now in your second view controller
you can get the value of userdefault, which you set in first view controller. I put it in the viewdidload method to show you how it works.
import UIKit
class SecondViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let myswitchBoolValuefromFirstVc : Bool = UserDefaults.standard.bool(forKey: "mySwitch")// this is how you retrieve the bool value
// to see the value, just print those with conditions. you can use those for your things.
if myswitchBoolValuefromFirstVc == true {
print("true")
}
else {
print("false")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
Hope this will help to you. good luck
Use this line of code:
#IBAction func soundSwitch(_ sender: UISwitch) {
UserDefaults.standard.set(soundSwitchOutlet.isOn, forKey: "sound")
}
insteadof :
#IBAction func soundSwitch(_ sender: UISwitch) {
UserDefaults.standard.set(soundSwitchOutlet, forKey: "sound")
}
Try this:
#IBAction func soundSwitchs(_ sender: Any)
{
UserDefaults.standard.set(soundSwitchOutlet.isOn, forKey: "sound")
UserDefaults.standard.synchronize()
}
//this is inside viewDidLoad and "boolValue" was declared outside viewDidLoad//
boolValue = UserDefaults.standard.bool(forKey: "sound")
Recently I have been making a app where you can create and quiz yourself on definitions or anything for that matter. I pass data to the next view after it the user hits the create button to make the title of the new notecard. The code I am using right now for that is:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let DestViewController: Card1 = segue.destinationViewController as! Card1
DestViewController.Content = Notetitle.text!
self.saved = self.Notetitle.text!
}
All of that works but, it will only work if I have a segue between viewcontrollers. I need to be able to pass that data with out a segue because I want the user to be able to create as many notecards as they want and the way I am trying to do that now is by using this code to make a copy of the UIView and then put in the new data (a master view). The new view can only be create using an IBAction. The prepare for segue I cannot use in the IBAction because it is it's own override function.
This is the code I am using to make a the new view:
let newCard =
self.storyboard!.instantiateViewControllerWithIdentifier("Main")
self.presentViewController(newCard, animated: true, completion:nil)
My hope is that I will be able to make a new view and then pass in the data pass in the data that the user just made to go on the notecard. (Hope this makes any sense at all)
MAIN TOPICS: -Create a new view and pass in new data Problem: Can pass data without a segue dont have one :/ -Be able to pass data between view controllers without a segue :)
I am new to all of this about 5 months. All of my code is in swift. Take it easy on me please. Feel free to ask me with any questions or comments. I have already posted a question on this but I didnt get an answer so have at it.
Thanks, Lucas Mazza
Don't use global variables unless you really need to. Making global static singleton's does not follow best practices. For more information read: What is so bad about singletons?
A better solution
You can use the protocol delegate pattern. I've actually written an article on this topic here:
https://www.codebeaulieu.com/36/Passing-data-with-the-protocol-delegate-pattern
You'll need a protocol that defines a function that will accept data. Then your other view controller will need to implement the delegate. If you need step-by-step details see the link provided above, alternatively you can simply download the project below and examine the code.
Download Working Example Project
Here's the code to make your protocol-delegate pattern work:
View Controller 1:
class ViewController: UIViewController, PresentedViewControllerDelegate {
#IBOutlet weak var textOutlet: UILabel!
#IBAction func doPresent(sender: AnyObject) {
let pvc = storyboard?.instantiateViewControllerWithIdentifier("PresentedViewController") as! PresentedViewController
pvc.data = "important data sent via delegate!"
pvc.delegate = self
self.presentViewController(pvc, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func acceptData(data: AnyObject!) {
self.textOutlet.text = "\(data!)"
}
}
View Controller 2:
import UIKit
// place the protocol in the view controller that is being presented
protocol PresentedViewControllerDelegate {
func acceptData(data: AnyObject!)
}
class PresentedViewController: UIViewController {
// create a variable that will recieve / send messages
// between the view controllers.
var delegate : PresentedViewControllerDelegate?
// another data outlet
var data : AnyObject?
#IBOutlet weak var textFieldOutlet: UITextField!
#IBAction func doDismiss(sender: AnyObject) {
if textFieldOutlet.text != "" {
self.presentingViewController!.dismissViewControllerAnimated(true, completion: nil)
}
}
override func viewDidLoad() {
super.viewDidLoad()
print("\(data!)")
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
if self.isBeingDismissed() {
self.delegate?.acceptData(textFieldOutlet.text)
}
}
}
I followed an online tutorial on youtube for a Hello World like program for Swift. Even though I typed the code just like the code in the tutorial it till gives me a debugging error (the green errors). I researched problems like this but the code was to complicated and was over my head. Usually I code in java, but I have been wanting to develop for mobile. Anyways, if you can tell me:
1. What the error means.
2. How I can fix it.
3. How can I prevent errors like this.
NameLabel.text = "Hi (nameTextField.text)" is the line I get the error on.
Here is my code:
import UIKit
class ViewController: UIViewController {
#IBOutlet var NameLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func HelloWorldAction(nameTextField: UITextField) {
NameLabel.text = "Hi \(nameTextField.text)"
}
}
nameTextField is't #IBAction. It's #IBOutlet.
I made a button and it appropriated action. I have everything working.
#IBAction func button(sender: UIButton!) {
NameLabel.text = "Hi \(namedTextField.text)"
}
I would like to play a MIDI file on iOS 8.2 with AVMIDIPlayer.
This does work indeed, but for a very short number of times: the memory seems never to be freed, and it is eventually filled.
Below is my code in Swift 1.2, reduced to a bare minimum: everything takes place in the ViewController, there are no other classes, no delegates, no error checking, etc.
The interface has just three buttons: NEW (instantiates a new AVMIDIPlayer and prerolls), PLAY, STOP.
This memory problem happens on the Simulator and on an actual device, and the bigger the soundfont and the midifile, the worse it is.
I noticed that RAM grows when creating a new AVMIDIPlayer instance AND when playing the midifile (in the latter case you can get even +4Mb/sec).
What am I missing?
Thanks for your help.
import UIKit
import AVFoundation
class ViewController: UIViewController {
var mp:AVMIDIPlayer?
#IBAction func newButton(sender: AnyObject) {
mp = AVMIDIPlayer(contentsOfURL: NSBundle.mainBundle().URLForResource("ahVous", withExtension:"mid"),
soundBankURL: NSBundle.mainBundle().URLForResource("TimGM6mb", withExtension:"sf2"),
error: nil)
mp!.prepareToPlay()
}
#IBAction func playButton(sender: AnyObject) {
mp!.play(nil)
}
#IBAction func stopButton(sender: AnyObject) {
mp!.stop()
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
There don't seem to be any SO posts on dismissMoviePlayerViewControllerAnimated in Swift so I guess I'll kick things off.
I have a table cell, when you do a long press on it, it displays a video. When the video ends, my goal is to take the user back to the table view. That last piece is the bit that's not working.
Any help here would be greatly appreciated. I've read through the Apple docs and some posts about this in Objective-C. Seems that the answer is to run dismissMoviePlayerViewControllerAnimated, a method on UIViewController but it's not working.
import UIKit
import MediaPlayer
class ViewController: UIViewController {
var moviePlayer:MPMoviePlayerController!
#IBOutlet weak var longPressView: UIView!
let longPressRec = UILongPressGestureRecognizer()
func longPressedView() {
playVideo()
}
func videoHasFinishedPlaying(notification: NSNotification){
println("Video finished playing")
self.dismissMoviePlayerViewControllerAnimated()
// not returning me to the ViewController
}
func playVideo() {
// get path and url of movie
let path = NSBundle.mainBundle().pathForResource("IMG_8602", ofType:"MOV")
let url = NSURL.fileURLWithPath(path!)
moviePlayer = MPMoviePlayerController(contentURL: url)
// construct the views
moviePlayer.view.frame = self.view.bounds
self.view.addSubview(moviePlayer.view)
moviePlayer.fullscreen = true
// remove controls at top and bottom of video
moviePlayer.controlStyle = MPMovieControlStyle.None
// add event observer for videoHasFinsihedPlaying
NSNotificationCenter.defaultCenter().addObserver(self, selector: "videoHasFinishedPlaying:",
name: MPMoviePlayerPlaybackDidFinishNotification, object: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
longPressRec.addTarget(self, action: "longPressedView")
longPressView.addGestureRecognizer(longPressRec)
longPressView.userInteractionEnabled = true
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Your code does not work because you are using MPMoviePlayerController instead of MPMoviePlayerViewController.
You are calling:
self.dismissMoviePlayerViewControllerAnimated()
but there is no MPMoviePlayerViewController to dismiss. That's why nothing happens.
If you prefer to use MPMoviePlayerController (as in the code you posted), after adding manually its view, you also have to manually remove it.