swift2

问题 When I have a reference to an item in an array, I'd like to find another item closest to it that matches a certain criteria (forward or backwards). For example, I have this array: let items = [ (a: "Item 1", b: "F", c: 3), (a: "Item 2", b: "S", c: 5), (a: "Item 3", b: "D", c: 7), (a: "Item 4", b: "A", c: 9), (a: "Item 5", b: "M", c: 11), (a: "Item 6", b: "I", c: 13), (a: "Item 7", b: "F", c: 15), (a: "Item 8", b: "S", c: 17), (a: "Item 9", b: "D", c: 19), (a: "Item 10", b: "A", c: 21), (a:

问题 import Foundation import SystemConfiguration public class Reachability { class func isConnectedToNetwork() -> Bool { var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0)) zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress)) zeroAddress.sin_family = sa_family_t(AF_INET) let defaultRouteReachability = withUnsafePointer(&zeroAddress) { SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, UnsafePointer($0))

问题 I use CAShapeLayer in order to draw a line on the screen. In the method touchesEnded I want to check " Does the line pass through the point?". In my code when I press on the any part of the screen the method contains returns always true. Perhaps, I have problem in line.frame = (view?.bounds)! . How can I fix it? Sorry for my bad English. override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { let touch = touches.first let firstPosition = touch?.location(in: self) if

问题 Im trying to use the 3D touch Quick Actions and I'm setting it up copying VEA Software code. In his sample code it works perfectly but when I try to add it to my app I get some unusual errors. I am new to coding and swift so please explain as much as possible. Thanks. Below I have the code which is in my app delegate. This is where I'm getting the error ( self.window? ): @available(iOS 9.0, *) func handleShortcutItem(shortcutItem: UIApplicationShortcutItem) -> Bool { var handled = false var

问题 Im trying to use the 3D touch Quick Actions and I'm setting it up copying VEA Software code. In his sample code it works perfectly but when I try to add it to my app I get some unusual errors. I am new to coding and swift so please explain as much as possible. Thanks. Below I have the code which is in my app delegate. This is where I'm getting the error ( self.window? ): @available(iOS 9.0, *) func handleShortcutItem(shortcutItem: UIApplicationShortcutItem) -> Bool { var handled = false var

问题 Equivalent functions in Swift 2 of Java's charAt() and indexOf() ? 回答1: Did you read the NSString documentation? String and NSString are not identical, but as mentioned by this answer most functions are more or less the same. Anyway, the two exact functions you ask for are right there: Java's charAt : func characterAtIndex(_ index: Int) -> unichar Java's indexOf : func rangeOfString(_ searchString: String) -> NSRange The NSRange data type contains just 2 variables: location and length that

问题 What Swift code will switch the app to fullscreen? I found references with example code for IOS. I am looking for a code which works for a MacOS app. 回答1: One way is to override viewDidAppear in NSViewController : class ViewController : NSViewController { override func viewDidAppear() { let presOptions: NSApplicationPresentationOptions = ([.FullScreen,.AutoHideMenuBar]) let optionsDictionary = [NSFullScreenModeApplicationPresentationOptions : NSNumber(unsignedLong: presOptions.rawValue)] self

来源： https://stackoverflow.com/questions/34866390/copy-selected-text-with-swift

来源： https://stackoverflow.com/questions/34866390/copy-selected-text-with-swift

来源： https://stackoverflow.com/questions/35852405/create-tableview-inside-tableviewcell-using-swift