任何人都可以在Objective C中给出最后的示例,将WCSession与IOS应用程序和带有多个ViewController的Watch应用程序(WatchOS2)一起使用的最佳做法是什么.
到目前为止我注意到的是以下事实:
1.)在AppDelegate的父(IOS)应用程序中激活WCSession:
- - (BOOL)application:(UIApplication *)application
- didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
- {
- //Any other code you might have
- if ([WCSession isSupported]) {
- self.session = [WCSession defaultSession];
- self.session.delegate = self;
- [self.session activateSession];
- }
- }
2.)在WatchOS2端使用< WCSessionDelegate>.但其余的对我来说完全不清楚!一些答案是通过在传递的字典中指定键来讨论,如:
- [session updateApplicationContext:@{@"viewController1": @"item1"} error:&error];
- [session updateApplicationContext:@{@"viewController2": @"item2"} error:&error];
其他人正在讨论检索默认会话
- WCSession* session = [WCSession defaultSession];
- [session updateApplicationContext:applicationDict error:nil];
其他人在谈论不同的队列? “如果有必要,客户有责任派遣到另一个队列.发送回主要队列.”
我完全糊涂了.因此,请举例说明如何将WCSession与IOS应用程序和带有多个ViewController的WatchOS2应用程序一起使用.
我需要它用于以下情况(简化):
在我的父应用程序中,我正在测量心率,锻炼时间和卡路里.在Watch应用程序1. ViewController我会在2点显示心率和锻炼时间.ViewController我也会显示心率和燃烧的卡路里.
解决方法
电话:
我相信应用程序:didFinishLaunchingWithOptions:handler是WCSession初始化的最佳位置,因此将以下代码放在那里:
- if ([WCSession isSupported]) {
- // You even don't need to set a delegate because you don't need to receive messages from Watch.
- // Everything that you need is just activate a session.
- [[WCSession defaultSession] activateSession];
- }
然后在代码中的某个位置测量心率,例如:
- NSError *updateContextError;
- BOOL isContextUpdated = [[WCSession defaultSession] updateApplicationContext:@{@"heartRate": @"90"} error:&updateContextError]
- if (!isContextUpdated) {
- NSLog(@"Update Failed with error: %@",updateContextError);
- }
更新:
看:
ExtensionDelegate.h:
- @import WatchConnectivity;
- #import <WatchKit/WatchKit.h>
- @interface ExtensionDelegate : NSObject <WKExtensionDelegate,WCSessionDelegate>
- @end
ExtensionDelegate.m:
- #import "ExtensionDelegate.h"
- @implementation ExtensionDelegate
- - (void)applicationDidFinishLaunching {
- // Session objects are always available on Apple Watch thus there is no use in calling +WCSession.isSupported method.
- [WCSession defaultSession].delegate = self;
- [[WCSession defaultSession] activateSession];
- }
- - (void)session:(nonnull WCSession *)session didReceiveApplicationContext:(nonnull NSDictionary<NSString *,id> *)applicationContext {
- NSString *heartRate = [applicationContext objectForKey:@"heartRate"];
- // Compose a userInfo to pass it using postNotificationName method.
- NSDictionary *userInfo = [NSDictionary dictionaryWithObject:heartRate forKey:@"heartRate"];
- // Broadcast data outside.
- [[NSNotificationCenter defaultCenter] postNotificationName: @"heartRateDidUpdate" object:nil userInfo:userInfo];
- }
- @end
在Controller的某个地方,我们将它命名为XYZController1.
XYZController1:
- #import "XYZController1.h"
- @implementation XYZController1
- - (void)awakeWithContext:(id)context {
- [super awakeWithContext:context];
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleUpdatedHeartRate:) name:@"heartRateDidUpdate" object:nil];
- }
- -(void)handleUpdatedHeartRate:(NSNotification *)notification {
- NSDictionary* userInfo = notification.userInfo;
- NSString* heartRate = userInfo[@"heartRate"];
- NSLog (@"Successfully received heartRate notification!");
- }
- @end
代码尚未经过测试我只是按原样编写,因此可能存在一些拼写错误.
我认为现在的主要想法非常明确,剩下的数据类型的转移并不是那么艰巨的任务.
我目前的WatchConnectivity架构要复杂得多,但它基于这种逻辑.
如果您还有任何问题,我们可以进一步讨论聊天.