Remove or add condition check for [UIApplication sharedApplication] in ForegroundReconnection.h

[haok3166]

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Remove or add condition check for [UIApplication sharedApplication] in ForegroundReconnection.h so that the framework can be used in widgets.

[ogres]

Is [UIApplication sharedApplication] the only problem for Widgets or do you remember if there are other APIs used as well, that are not accessible from widgets ?

[haok3166]

Thanks for your response. Yes, [UIApplication sharedApplication] is the only issue when used in Widgets.

[jcavar]

I think our best option here is to extract whole foreground reconnection to separate pod (maybe even repo?). I believe it is the only one that depends on UIKit and MQTTClient should not be dependent on UI framework. It could be in theory integrated macOS app as well.

[haok3166]

Yes, the UIKit dependency should be removed.

It is the client's responsibility to stop / resume the connection. For some apps, they might want to keep the connection in background.

Thanks for the great MQTT framework.