I'm trying to make a command line tool for OS X with Xcode 6 and the new Swift language. How can I send output to stderr? Is this done with println?
Get NSString from NSMutableArray on Swift
Try componentsJoinedByString func cualidadesToString() -> NSString{ return cualidades.componentsJoinedByString(",") } But you should use Swift's builtin String and Array types to make it more type-safe. var cualidades = [String]() func addCualidad(cualidad: String){ cualidades.append(cualidad) } func delCualidad(cualidad: String){ if let cindex = find(cualidades, cualidad) { cualidades.removeAtIndex(cindex) } } func cualidadesToString() -> String{...
Parse JSON output from AlamoFire
If I believe the println of aStatus, the property title is a String, not a Dictionary. Change this part in your code (cast as String instead of as NSDictionary): if let user = aStatus["title"] as? String { println( "TITLE \(user)") } ...
Detect UIImageView Touch in Swift
You can put an UITapGestureRecognizer inside your UIImageView using Interface Builder or in code (as you want), I prefer the first. The you can put an @IBAction and handle the tap inside your UIImageView, Don't forget to set the UserInteractionEnabled to true in Interface Builder or in code. @IBAction func...
Build error after I localized Info.plist
ios,objective-c,xcode,swift,localization
Roll back those changes, add a InfoPlist.strings file to your project, localize it and then add the needed keys to it. For example: "CFBundleDisplayName" = "App display name"; "CFBundleName" = "App bundle name"; ...
coordinate deprecated as of iOS 7
Replace the following in your code var latestLocation: AnyObject = locations[locations.count - 1] with the following. var latestLocation = locations.last as! CLLocation ...
Characters and Strings in Swift
ios,string,swift,unicode,character
When a type isn't specified, Swift will create a String instance out of a string literal when creating a variable or constant, no matter the length. Since Strings are so prevalent in Swift and Cocoa/Foundation methods, you should just use that unless you have a specific need for a Character—otherwise...
How to disable the Copy/Hide feature in UIImagePickerController when long pressing a image …?
ios,swift,ios8,uiimagepickercontroller,ios8.3
Its orientation issues. UIImagePickerController wont support landscape mode.. Try this code source :: https://gist.github.com/mkeremkeskin/0ed9fc4a2c0e4942e451 - (BOOL)shouldAutorotate { UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]; if ( orientation == UIDeviceOrientationPortrait | orientation == UIDeviceOrientationPortraitUpsideDown) { return YES; } return NO; } - (NSUInteger)supportedInterfaceOrientations { return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown); } -...
PFUser not unwrapped - swift
Here is explanation: What is an "unwrapped value" in Swift? PFFacebookUtils.logInWithPermissions(["public_profile", "user_about_me", "user_birthday"], block: { user, error in if user == nil { println("the user canceled fb login") //add uialert return } //new user else if user!.isNew { println("user singed up through FB") //get information from fb then save to...
animating a view on top of uitableview
In initializeSettingsView() add nibView.setTranslatesAutoresizingMaskIntoConstraints(false). And then in viewDidload add the hight constraint to settingsView constraints.append(NSLayoutConstraint(item: settingsView, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 90.0)) And you do not need to set the position of settingsView, since it will be layout at the right position based on...
iOS: What is the callback when tapped on the empty space between keyboard and search bar to dismiss the keyboard when search bar is active
How about -searchBarTextDidEndEditing: in UISearchBarDelegate?
Beacon / IOS CLLocationManager get current region
ios,swift,cllocationmanager,ibeacon
You can use the locationManager:didDetermineState:forRegion: callback, which tells you if you are either Inside, Outside or Unknown. You can force yourself to get a callback by calling locationManager.requestStateForRegion(region) when your app starts up. See more here: https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLLocationManagerDelegate_Protocol/#//apple_ref/occ/intfm/CLLocationManagerDelegate/locationManager:didDetermineState:forRegion:...
Obj-C Instance method returning a instanceType called from Swift - Function produces expected type 'UIImage!' error
If you look at the method you have defined in Objective C image category, it is instance method and you are trying to call it using UIImage class in swift. You can basically use either one of the following two approaches, Either, self.backgroundImageView.image = self.someImage.applyDarkEffect() // notice the method does...
AppleScript (or swift) add hours to time
You need to pick the hours as an individual variable, like shown below: set currentDate to current date set newHour to ((hours of currentDate) + 8) You can also use this for days, minutes and seconds. This will work. You can then use the variables to construct a new date...
Read plist inside ~/Library/Preferences/
You need to use NSString method: stringByExpandingTildeInPath to expand the ~ into the full path. NSString *resPath = [@"~/Library/Preferences/" stringByExpandingTildeInPath]; NSLog(@"resPath: %@", resPath); Output: resPath: /Volumes/User/me/Library/Preferences ...
Difference between stringByAppendingString and appendString in ios
ios,objective-c,swift,nsstring,nsmutablestring
appendString: is from NSMutableString, stringByAppendingString: is from NSString. The first one mutates the existing NSMutableString. Adds to the end of the receiver the characters of a given string. The second one returns a new NSString which is a concatenation of the receiver and the parameter. Returns a new string made...
Parse and Swift Geopoints not saving
That is because you are setting it but you are not saving the value you just set: if signUpError == nil { PFGeoPoint.geoPointForCurrentLocationInBackground { (geoPoint: PFGeoPoint?, error: NSError?) -> Void in if error == nil { PFUser.currentUser()!.setValue(geoPoint, forKey: "location") PFUser.currentUser().saveInBackground() } } ...
looping variable in swift
You don't need to create a new variable for each image, try this: for var i = 1; i < 8; i++ { images.append(UIImage(named: "image\(i)")) } This loop will create an array with 8 images without create the variables image1 to image8. I hope that help you!...
It is possible to continuously update the UILabel text as user enter value in UITextField in iOS
ios,objective-c,swift,uitextfield,uilabel
You can register your textField for value change event: [textField addTarget: self action:@selector(textFieldDidChange) forControlEvents:UIControlEventEditingChanged]; and in textFieldDidChange function update your label: - (void)textFieldDidChange { label.text = textField.text; } The function shouldChangeCharactersInRange is needed more for taking desisions whether to allow upcoming change or not...
iOS Swift: Sound not playing on iPhone Simulator
ios,iphone,swift,audio,ios-simulator
You just need to move the declaration of your audioPlayer out of your method. Try like this: var audioPlayer:AVAudioPlayer! func playSound() { if let soundURL = NSBundle.mainBundle().URLForResource("doorbell", withExtension: "mp3") { audioPlayer = AVAudioPlayer(contentsOfURL: soundURL, error: nil) audioPlayer.prepareToPlay() audioPlayer.play() } } ...
Omitting the return type in Swift closures
I would not expect that example to have worked but it does In many cases, Swift can often infer types of variables and expressions. In this case, Swift looks at the value you're returning and can infer the type. If I modify that closure to specify a return type...
UITapGestureRecognizer sender is the gesture, not the ui object
ios,xcode,swift,uigesturerecognizer
You can get a reference to the view the gesture is added to via its view property. In this case you are adding it to the button so the view property would return you you the button. let button = sender.view as? UIButton ...
Change the “about this” window on mac app
If your application is an .app bundle then it should have an info.plist. Inside the info.plist will normally contain version information that should display the version number: <key>CFBundleShortVersionString</key> <string>2.0.0</string> Typically the version information here is populated in places that call for it (eg. About). To change the name that would...
Do I have to use both of these methods?
No, you don't have to use both. Either you go with reloadCell technique or cell updates via beginUpdate and endUpdate. When you are reloading a particular row, internally table view system creates 2 cell and then blends in the new one with. You can remove the beginUpdates and endUpdates and...
How to create UITableViewCells with complex content in order to keep scrolling fluent
ios,swift,uitableview,cocoa-touch,ios-charts
What you're trying to do is going to inevitably bump into some serious performance issues in one case or another. Storing all cells (and their data into memory) will quickly use up your application's available memory. On the other hand dequeueing and reloading will produce lags on some devices as...
How to do a “show (e.g Push)” segue programatically without animation?
ios,objective-c,swift,storyboard,segue
What the show (e.g. Push) segue does internally is to call -[UIViewController showViewController:sender:] Calling this method on your view controller itself, will trigger the appropriate way of presenting the view controller you are passing. // Swift self.showViewController(viewControllerToShow, sender: self) // Objective-C [self showViewController: viewControllerToShow sender: self]; The animation can be...
Extra table cells when UITableViewController is embedded into a Container in a UIViewController
ios,swift,uitableview,uiviewcontroller
You just need to add this to your code in viewDidLoad. self.tableView.tableFooterView = [[UIView alloc]initWithFrame:CGRectZero]; EDIT: sorry i was written in objective -c here is in swift. self.tableView.tableFooterView = UIView(frame:CGRectZero) The tableview will display what appear to be extra blank rows to fill out the bounds if there are not...
Can't figure out coder aDecoder: NSCoder
Your custom initializer cannot initialize the immutable property. If you want it to be immutable then, instead of creating a custom initializer, just initialize in one of the required or designated initializer. Like this, class AddBook: UIViewController { @IBOutlet weak var bookAuthor: UITextField! @IBOutlet weak var bookTitle: UITextField! let bookStore:...
How to save text field value in uicollectionviewcell
swift,uitextfield,uicollectionviewcell
Implement in your ViewController the UITextFieldDelegate protocol, specifically the textField:didEndEditing method. Save your indexPath.row in the textField.tag as you're doing, and set the delegate to the controller, where you can save the value. This is a very simplistic example: class MyViewController : UITableViewController { var texts = [Int:String]() func tableView(tableView:...
How to code a generic Swift class which stores a Generator of the same type
You have to use the generator type as the type placeholder G, and refer to its element type as G.Element: class MyGenericClass<G : GeneratorType> { var source : G var itemsProcessed : [ G.Element ] = [] init(source: G) { self.source = source } func getValue() -> G.Element? { let...
Unexpectedly found nil while unwrapping an Optional value - Plist
Seems to be no error in your code, Check that the arrays in plist has the same naming as in your code might be mistaken something with keys. You can check that by right-click on plist and Open-as then choose source code Like : objectForKey("name") called <key>name</key> objectForKey("image") called <key>image</key>...
What's the equivalent of finally in Swift
If you are thinking about the SWIFT 2.0 error handling to be the same thing as exception you are missunderstanding. This is not exception, this is an error that conforms to a protocol called ErrorType. The purpose of the block is to intercept the error thrown by a throwing function...
IOS rightBarButtonItem on UINavigationController in swift
ios,swift,uibarbuttonitem,uinavigationitem
You should set the menu_button_ as the rightBarButtonItem of your viewController rather than the navigationController. Try self.navigationItem.rightBarButtonItem = menu_button_ instead self.navigationController!.navigationItem.rightBarButtonItem = menu_button_ ...
Swift Singleton not Working
If you use this method of singletons, to actually access the singleton you need to use DataWarehouse.sharedData, instead of DataWarehouse(), when you are 'constructing' the datawarehouse object within the other classes. At the moment you never actually access sharedInstance. If you are using Swift 1.2 and prefer, you can use...
Swift timer in milliseconds
As Martin says in his comment, timers have a resolution of 50-100 ms (0.02 to 0.1 seconds). Trying to run a timer with an interval shorter than that will not give reliable results. Also, timers are not realtime. They depend on the run loop they are attached to, and if...
Implementing Applovin Ads with Swift & SpriteKit
You likely need to enable "Test Mode" for your app in the AppLovin dashboard in order to force test ads to serve for your area. Please send any questions to [email protected] for further assistance.
How can I fix crash when tap to select row after scrolling the tableview?
ios,xcode,swift,uitableview,tableviewcell
Because you are using reusable cells when you try to select a cell that is not in the screen anymore the app will crash as the cell is no long exist in memory, try this: if let lastCell = self.diceFaceTable.cellForRowAtIndexPath(lastIndexPath) as! TableViewCell{ lastCell.checkImg.image = UIImage(named: "uncheck") } //update the data...
Cannot invoke method with argument list of type KeyType in Swift
I think that best solution for your case would be changing class declaration to: class EventDispatcher<U: EventDispatcherProtocol> { typealias KeyType = U.T And it will also simplify creation of the EventDispatcher with skipping the redundant type declarations: var dispatcher = EventDispatcher<CustomListener<CustomEvent>>() EDIT: Since the code was altered multiple times while...
How to get time difference based on GMT on Swift
I think your problem is that you are using a calendar with an unset time zone. Your calculation of adding 60*60*24*2 to the current time does not account for the two days when some timezones change to and from daylight savings time. Those days are 23 and 25 hours long....
Swift Range on the fly 1…12.contains(1) Cannot invoke 'contains' with (Int)
In this case the problem was that of operator precedence: (1...12).contains(1) // -> true (the code does look ambiguous otherwise)...
Factorials in Swift
As others have said you can use libraries that support larger numbers, or just don't allow values that are too big. Note that if you want to handle very large values you might need to use a loop rather than a recursive algorithm because recursion can cause a Stack Overflow....
create a popup window with just a textview/string and a button SWIFT ios 8
iphone,swift,ios8,popup,xcode6
It sounds like you want a UIAlertController, check this out: @IBAction func popUpButton(sender: UIButton) { //This is where you declare and initialize your `UIAlertController` let alertController = UIAlertController(title: "Alert", message: "Test Alert", preferredStyle: .Alert) //You give the `UIAlertController` an action, which basically has a cancel button, that just cancels out...
How to add checkbox to uicollectionview in swift
swift,checkbox,uicollectionviewcell
Here is the example project available with checkbox cell. (objective - c) MyCell.m // A setter method for checked property - (void)setChecked:(BOOL)checked { // Save property value _checked = checked; // Update checkbox image if(checked) { self.checkBoxImageView.image = [UIImage imageNamed:@"Checked"]; } else { self.checkBoxImageView.image = [UIImage imageNamed:@"Unchecked"]; } } Your...
iOS Keyboard “Done” button load action
When the "Return Key" (or "Done") button is tapped, the delegate of your textfield will receive a set of callbacks including textFieldShouldEndEditing:, and textFieldDidEndEditing:. To respond to these, implement a UITextFieldDelegate and execute your action there, i.e. call loginActionButton in one of the delegate methods. Relevant Documentation: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITextFieldDelegate_Protocol/#//apple_ref/occ/intfm/UITextFieldDelegate/textFieldDidEndEditing:...
Reference method from different class as curried function
As methods in Swift are curried class functions, compiler has to decide which overload to choose. To reference instance's merge method you need to specify it's exact type: let instanceMerge: RACSignal -> RACSignal! -> RACSignal! = RACSignal.merge...
MFMessageComposeViewControllerDelegate not being called
It's crashing because your handler object is getting released and deallocated right after the call to handler.sendMessage(), and then a delegate callback is attempted on that now-deallocated object when you try to send or hit cancel. The object is getting released and deallocated because nothing is holding a strong reference...
Use Unix Executable File to Run Shell Script and MPKG File
The most common issue when handling variables containing paths of directories and files is the presence of special characters such as spaces. To handle those correctly, you should always quote the variables, using double quotes. Better code would therefor be: sudo sh "$path/join.sh" sudo sh "$path/join2.sh" It is also advised...
iOS 9 not opening Instagram app with URL SCHEME
iOS 9 has made a small change to the handling of URL scheme. You must whitelist the url's that your app will call out to using the LSApplicationQueriesSchemes key in your Info.plist. Please see post here: http://awkwardhare.com/post/121196006730/quick-take-on-ios-9-url-scheme-changes The main conclusion is that: If you call the “canOpenURL” method on a...
What is the best practice add video background view?
First of all, you have two main choices: use a imageView with a GIF or use a video for background with AVPlayer or MPMoviePlayerController. You can find a lot of example for both ways, here's a few: use a GIF for cool background video cover iOS In reply to your...
How can I show ONLY the date (and not the time) using NSDateFormatter?
var dateFormatter = NSDateFormatter() dateFormatter.dateFormat = "yyyy-MM-dd" dateFormatter.locale = NSLocale(localeIdentifier: @"en_US") let d = NSDate() let s = dateFormatter.stringFromDate(d) ...
iOS 8 Swift CS193P Calculator Bug Switch Operation
Your code looks fine, it looks like you accidentally placed a breakpoint in your code, see that blue-looking arrow to the left of the green-highlighted line? Do one of the following: Go ahead and right click that and click Delete Breakpoint Drag and drop that breakpoint into your view controller...