如何在Objective-C中将数据从Iphone发送到OS2中的Apple Watch

问题描述

我见过。我在Objective-C中问同样的问题。我还查看了Apple的。

I've seen a similar question posted on how to send data back and forth in Swift. I'm asking the same question but in Objective-C. I've also viewed Apple's transition docs.

我最好用清晰的例子，而不是讲座材料。因此，如果有人实现了这一点并且不介意分享，那将非常感激。

I work best with clear examples, rather than lecture material. So if someone has implemented this and wouldn't mind sharing, that would be much appreciated.

推荐答案

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这是一个关于WatchConnectivity的Q / A的链接：

我会给你一个例如go ApplicationContext，WatchConnectivity还有其他两种消息传递技术。请观看WWDC2015会话视频。

I will give you an example go ApplicationContext, there are 2 other messaging techniques with WatchConnectivity. Please watch WWDC2015 session video for those.

首先，您需要在要发送和从中接收数据的类中符合WCSessionDelegate协议。例如，在手表和iPhone上。

First you need to conform to the WCSessionDelegate protocol in the classes you want to send and receive data from/to. E.g both on watch and iPhone.

之前的基本检查:(这只是一个例子，实现比这更好）

Basic checking before: (this is just an example, implement better than this)

if ([WCSession isSupported]) {
        WCSession *session = [WCSession defaultSession];
        session.delegate = self;
        [session activateSession];
        NSLog(@"SESSION AVAIBLE");
    }

    //Objective-C
    if ([[WCSession defaultSession] isReachable]) {
        NSLog(@"SESSION REACHABLE");
    }

这会将手机数据发送到手表。

This will send the data from the phone to the watch.

WCSession *session = [WCSession defaultSession];
NSError *error;

[session updateApplicationContext:@{@"firstItem": @"item1", @"secondItem":[NSNumber numberWithInt:2]} error:&error];

这将从手表上的手机接收数据。

This will receive the data from the phone on the watch.

- (void) session:(nonnull WCSession *)session didReceiveApplicationContext:(nonnull NSDictionary<NSString *,id> *)applicationContext {

    NSLog(@"%@", applicationContext);


    item1 = [applicationContext objectForKey:@"firstItem"];
    item2 = [[applicationContext objectForKey:@"secondItem"] intValue];
}

WatchConnectivity上的WWDC2015视频非常棒，我建议您查看。

The WWDC2015 video on WatchConnectivity is really great, I recommend to check it out.

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