我如何通过iPhone将UIImageOver WatchConnecitivity 从iPhone转移到Apple Watch,而无需在手机上进行用户交互,而只能加载,因为手表以编程方式对其进行调用。我之所以需UIImage要这样做,是因为图像处理用于创建Watchkit API中不可用的使用逻辑,因此必须通过手机进行创建。我似乎有一些使用Watch Watch连接的示例:
UIImage
func startSession() { session?.delegate = self session?.activateSession() }
但是,我是Watch Kit的新手,对如何使用此会话管理器感到困惑,尤其是如何从手表转到设备,而不是像苹果文档中所看到的那样。有人可以提供一个示例,说明如何在手表和手机上执行此操作,以便通过手表在手机上拨打UIImage电话吗?
要在iPhone和Apple Watch之间传输文件,您应该使用Watch Connectivity,WCSession以正确处理通信。您可以使用的委托方法发送UIImageas 。NSData``didReceiveMessageData``WCSessionDelegate
WCSession
NSData``didReceiveMessageData``WCSessionDelegate
您应该知道的第一件事是将您转换UIImage为NSData,反之亦然。您可以为此使用以下代码:
NSData
如果是PNG图片
let image = UIImage(named: "nameOfYourImage.jpg") let data = UIImagePNGRepresentation(image)
如果是JPG图片
let image = UIImage(named: "nameOfYourImage.jpg") let data = UIImageJPEGRepresentation(image, 1.0)
然后,您可以使用WCSession来通过以下方式发送消息:
ViewController.swift
class ViewController: UIViewController, WCSessionDelegate { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. if WCSession.isSupported() { WCSession.defaultSession().delegate = self WCSession.defaultSession().activateSession() } let image = UIImage(named: "index.jpg")! let data = UIImageJPEGRepresentation(image, 1.0) WCSession.defaultSession().sendMessageData(data!, replyHandler: { (data) -> Void in // handle the response from the device }) { (error) -> Void in print("error: \(error.localizedDescription)") } } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }
InterfaceController.swift
import WatchKit import Foundation import WatchConnectivity class InterfaceController: WKInterfaceController, WCSessionDelegate { override func awakeWithContext(context: AnyObject?) { super.awakeWithContext(context) // Configure interface objects here. } override func willActivate() { // This method is called when watch view controller is about to be visible to user super.willActivate() if WCSession.isSupported() { WCSession.defaultSession().delegate = self WCSession.defaultSession().activateSession() } } override func didDeactivate() { // This method is called when watch view controller is no longer visible super.didDeactivate() } func session(session: WCSession, didReceiveMessageData messageData: NSData, replyHandler: (NSData) -> Void) { guard let image = UIImage(data: messageData) else { return } // throw to the main queue to upate properly dispatch_async(dispatch_get_main_queue()) { [weak self] in // update your UI here } replyHandler(messageData) } }
在上面的代码中,当您打开时,ViewController它发送UIImage,上面的示例仅出于学习目的,您必须以更适当的方式处理项目的复杂性。
ViewController
希望对您有所帮助。