iOS和Google附近API:如何正确的发布和订阅?
iOS and Google Nearby API: how to publish and subscribe in the right way?
我已经做到了 the guide says
这是消息管理器
[GNSMessageManager setDebugLoggingEnabled:YES];
messageManager = [[GNSMessageManager alloc] initWithAPIKey:API_KEY paramsBlock:^(GNSMessageManagerParams *params) {
params.bluetoothPowerErrorHandler = ^(BOOL hasError) {
// Update the UI for Bluetooth power
};
params.bluetoothPermissionErrorHandler = ^(BOOL hasError) {
// Update the UI for Bluetooth permission
};
}];
这些是我发布和订阅 Nearby API 的方法。
- (IBAction)onPublish:(id)sender {
NSLog(@"publish");
NSString* str = @"hello world";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
GNSMessage* message = [GNSMessage messageWithContent:data];
id<GNSPublication> publication = [messageManager publicationWithMessage:message paramsBlock:^(GNSPublicationParams *publicationParams) {
publicationParams.strategy = [GNSStrategy strategyWithParamsBlock:^(GNSStrategyParams * strategyParams) {
strategyParams.allowInBackground = YES;
strategyParams.discoveryMediums = kGNSDiscoveryMediumsBLE;
strategyParams.discoveryMode = kGNSDiscoveryModeDefault;
}];;
}];
}
- (IBAction)onSubscribe:(id)sender {
NSLog(@"subscribe");
id<GNSSubscription> subscription = [messageManager subscriptionWithMessageFoundHandler:^(GNSMessage *msg) {
// Add the name to a list for display
NSLog(@"message found %@", [msg description]);
} messageLostHandler:^(GNSMessage *msg) {
// Add the name to a list for display
NSLog(@"message lost %@", [msg description]);
} paramsBlock:^(GNSSubscriptionParams *subscriptionParams) {
subscriptionParams.strategy = [GNSStrategy strategyWithParamsBlock:^(GNSStrategyParams * strategyParams) {
strategyParams.allowInBackground = YES;
strategyParams.discoveryMediums = kGNSDiscoveryMediumsBLE;
strategyParams.discoveryMode = kGNSDiscoveryModeDefault;
}];;
}];
}
同时启用蓝牙中心和外设后台功能,并设置外设的权限字符串。
最后我订阅了一台 iOS 设备并从另一台设备发布但没有任何反应。
务必保留发布和订阅对象。他们在解除分配时停止 publishing/subscribing。通常的方法是将它们作为 properties/ivars 存储在您的 类.
之一中
开发人员文档在这一点上具有误导性,我深表歉意。我们将在下一个版本中改进文档。
我已经做到了 the guide says
这是消息管理器
[GNSMessageManager setDebugLoggingEnabled:YES];
messageManager = [[GNSMessageManager alloc] initWithAPIKey:API_KEY paramsBlock:^(GNSMessageManagerParams *params) {
params.bluetoothPowerErrorHandler = ^(BOOL hasError) {
// Update the UI for Bluetooth power
};
params.bluetoothPermissionErrorHandler = ^(BOOL hasError) {
// Update the UI for Bluetooth permission
};
}];
这些是我发布和订阅 Nearby API 的方法。
- (IBAction)onPublish:(id)sender {
NSLog(@"publish");
NSString* str = @"hello world";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
GNSMessage* message = [GNSMessage messageWithContent:data];
id<GNSPublication> publication = [messageManager publicationWithMessage:message paramsBlock:^(GNSPublicationParams *publicationParams) {
publicationParams.strategy = [GNSStrategy strategyWithParamsBlock:^(GNSStrategyParams * strategyParams) {
strategyParams.allowInBackground = YES;
strategyParams.discoveryMediums = kGNSDiscoveryMediumsBLE;
strategyParams.discoveryMode = kGNSDiscoveryModeDefault;
}];;
}];
}
- (IBAction)onSubscribe:(id)sender {
NSLog(@"subscribe");
id<GNSSubscription> subscription = [messageManager subscriptionWithMessageFoundHandler:^(GNSMessage *msg) {
// Add the name to a list for display
NSLog(@"message found %@", [msg description]);
} messageLostHandler:^(GNSMessage *msg) {
// Add the name to a list for display
NSLog(@"message lost %@", [msg description]);
} paramsBlock:^(GNSSubscriptionParams *subscriptionParams) {
subscriptionParams.strategy = [GNSStrategy strategyWithParamsBlock:^(GNSStrategyParams * strategyParams) {
strategyParams.allowInBackground = YES;
strategyParams.discoveryMediums = kGNSDiscoveryMediumsBLE;
strategyParams.discoveryMode = kGNSDiscoveryModeDefault;
}];;
}];
}
同时启用蓝牙中心和外设后台功能,并设置外设的权限字符串。 最后我订阅了一台 iOS 设备并从另一台设备发布但没有任何反应。
务必保留发布和订阅对象。他们在解除分配时停止 publishing/subscribing。通常的方法是将它们作为 properties/ivars 存储在您的 类.
之一中开发人员文档在这一点上具有误导性,我深表歉意。我们将在下一个版本中改进文档。