实时从iBeacon切换到BLE? [英] Switching from iBeacon to BLE in real time?

问题描述

我们的信标硬件被编程为iBeacon +可写BLE. 因此，我可以使用iBeacon发现它，也可以通过BLE连接到它.

Our beacon hardware was programmed to be iBeacon + writeable BLE . So i can discover it with iBeacon , and also connect to it via BLE.

我想扫描iBeacon，当我进入该区域(应用程序在后台)并且正在调用该代表时，他将切换到BLE并使用BLE连接到该设备:

I would like to scan for iBeacon, and when i enter the region (app is in background) , and the delegate is being called, he will than switch to BLE and connect to the device with BLE :

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
    // here connect as usual via bluetooth
}

因此，正如我所说，我可以单独编写/发现硬件，但是当我尝试通过BLE从代理连接到模块时(当应用在后台运行时，我进入该区域，代理处于打开状态，然后在后台尝试与BLE连接时， 它不起作用，尽管我可以在后台在区域内执行其他操作，例如，连接到服务器.)

So,as i said, i can separately write/discover the hardware, but when i am trying to connect to the module, from the delegate via BLE ( when app in background,i enter the region,delegate is ON, than in background trying to connect with BLE, its not working, although i can in background do other things when inside a region, for example, connect to a server .)

我能做些什么来实现它吗?我还试图停止监视信标区域，但是即使这样，他也无法从后台连接到BLE.

Is there anything i can do to make it happen? i was also trying to stop the beacon region monitoring, but even so, he can't connect to the BLE from background .

推荐答案

要在bg中进行操作，您需要向操作系统请求时间.然后，您将获得一个标识符.

to do stuff in bg you need to request time from the os. you then get an identifier.

//identifier
@property(nonatomic, assign) UIBackgroundTaskIdentifier backgroundTaskIdentifier;

通过调用它来请求它:

if(!self.backgroundTaskIdentifier) {
    self.backgroundTaskIdentifier = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
        NSLog(@"expired, fail, throw!!!");
        @throw [NSException exceptionWithName:@"BeaconServiceKilled" reason:@"Expired in bg" userInfo:nil];
    }];
}

完成后释放它

if(self.backgroundTaskIdentifier) {
    [[UIApplication sharedApplication] endBackgroundTask:self.backgroundTaskIdentifier];
    self.backgroundTaskIdentifier = 0;
}

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