ios - 了解 handleWatchKitExtensionRequest

Question

我正在测试 iPhone 应用程序上某些代码的执行情况。我遵循 Apple 建议的文档(不使用后台任务，仅使用控制台日志)。但是我在控制台上没有得到任何东西(我想看到字符串“howdy”)。

这是因为我在模拟器上运行 WatchKit Extension 应用吗？还是我遗漏了什么？

---

苹果说:

If you are using openParentApplication:reply:, make sure you create a background task immediately upon entering application:handleWatchKitExtensionRequest:reply:. This will make sure that the iPhone app gets time in the background instead of being suspended again. Additionally, wrap the call to endBackgroundTask: in a dispatch_after of 2 seconds to ensure that the iPhone app has time to send the reply before being suspended again.

我在 WatchKit 扩展上的实现(链接到按钮的操作方法):

- (IBAction)sendMessageToApp{

    NSString *requestString = [NSString stringWithFormat:@"executeMethodA"]; // This string is arbitrary, just must match here and at the iPhone side of the implementation.
    NSDictionary *applicationData = [[NSDictionary alloc] initWithObjects:@[requestString] forKeys:@[@"theRequestString"]];

    [WKInterfaceController openParentApplication:applicationData reply:^(NSDictionary *replyInfo, NSError *error) {
        NSLog(@"\nReply info: %@\nError: %@",replyInfo, error);
    }];

    NSLog(@"sending message..");
}

我在 AppDelegate.m 文件上的实现:

- (void)application:(UIApplication *)application handleWatchKitExtensionRequest:(NSDictionary *)userInfo reply:(void(^)(NSDictionary *replyInfo))reply {
    NSString * request = [userInfo objectForKey:@"requestString"];

    NSLog(@"howdy");


    // This is just an example of what you could return. The one requirement is
    // you do have to execute the reply block, even if it is just to 'reply(nil)'.
    // All of the objects in the dictionary [must be serializable to a property list file][3].
    // If necessary, you can covert other objects to NSData blobs first.
    NSArray * objects = [[NSArray alloc] initWithObjects:[NSDate date],[NSDate date],[NSDate date], [NSDate date], nil];

    NSArray * keys = [[NSArray alloc] initWithObjects:@"objectAName", @"objectdName", @"objectBName", @"objectCName", nil];
    NSDictionary * replyContent = [[NSDictionary alloc] initWithObjects:objects forKeys:keys];

    reply(replyContent);
}

我在控制台中得到的内容:

2015-04-16 14:43:44.034 FanLink WatchKit Extension[3324:142904] <InterfaceController: 0x608000081fe0> initWithContext
2015-04-16 14:44:04.848 FanLink WatchKit Extension[3324:142904] sennding message..
2015-04-16 14:44:04.854 FanLink WatchKit Extension[3324:142904] 
Reply info: {
    objectAName = "2015-04-16 13:44:04 +0000";
    objectBName = "2015-04-16 13:44:04 +0000";
    objectCName = "2015-04-16 13:44:04 +0000";
    objectdName = "2015-04-16 13:44:04 +0000";
}
Error: (null)

Answer 1

这是因为您只是在调试 WatchKit 扩展目标。如果您还想在控制台中查看主应用程序日志，则需要通过 Xcode 调试器附加主应用程序的进程。转到调试-->附加进程-->(然后按标识符选择并键入你的应用程序名称)

为了更好地浏览，我为您找到了这个专门用于 WatchKit/WatchKit 扩展调试的好资源: https://mkswap.net/m/blog/How+to+debug+an+iOS+app+while+the+WatchKit+app+is+currently+running+in+the+simulator