NSUserDefault更改watchppExtension中的通知处理 [英] NSUserDefault change notification handling in watchppExtension

问题描述

我正在创建一个iwatch应用程序，只是为了在iPhone手机应用程序中点击桌面视图时显示值。

i'm creating a iwatch app just to display a value on watch when clicking on a tableview in iphone app.

我想收到关于共享的用户默认值更改。它在watchkitapp和iphone应用程序之间共享，因此当用户对手机进行任何更改时，我必须收到通知。我已完成以下操作

i would like to get a notification on a shared userdefault value changes . it is shared between watchkitapp and iphone app, so when the user makes any changes in phone i have to get the notification. i have done the following

当用户在手机上执行某些操作时

When user do Some action in applicaton on phone

NSUserDefaults *shared = [[NSUserDefaults alloc] initWithSuiteName:@"group.app"];</br>
id object = [self.plantsArray objectAtIndex:[self.plantsTable indexPathForSelectedRow].row];</br>
[shared setObject:object forKey:@"data"];</br> [shared synchronize];

已注册通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(print) name:NSUserDefaultsDidChangeNotification object:nil];

但不幸的是我没有收到任何通知，任何人都知道一些解决方案

But unfortunately i'm not getting any notifications, any one know some solution

推荐答案

我不认为iOS在应用和扩展程序之间具有分布式通知的能力，通知将两者之间没有工作，相反，你需要找到一种方法，两者都可以监控变化。例如文件。

I don't think iOS has capability of distributed notifications between app and extension, notifications will not work between both, instead you need to find a way in which both can monitor changes. For example files.

您已经创建了 group ，您可以将文件保存在组文件夹中并添加扩展名为 filewatcher ，从app更新文件， filewatcher 将捕获更改，您的工作已完成。

As you already have created group, you can keep a file in the group folder and add a filewatcher in extension, update the file from app, and filewatcher will catch the change, and your work is done.

对于 filewatcher 请参阅代码这里。

希望有所帮助。

干杯。

更新

查找文件观察者Swift版本 此处。感谢 @rivera 添加。

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