CoreBluetooth - 可以多次调用connectPeripheral [英] CoreBluetooth - Can connectPeripheral be called multiple times

问题描述

某个应用程序是否可以尝试同时连接多个设备？

Can an application attempt to connect to multiple devices at once?

当应用程序调用'connectPeripheral'时，它将尝试连接一段时间以来未指定的时间没有超时。但是，如果第二次调用'connectPeripheral'，它是否会取消之前的调用，或者应用是否会尝试同时建立两个独立的连接？

When an app calls 'connectPeripheral', it will attempt to connect for an unspecified amount of time since there is no time-out. However, if 'connectPeripheral' is called a second time, does it cancel out the previous call, or will the app attempt to make two separate connections at once?

推荐答案

在我的测试中，我看到你在连接前多次调用它，实际连接需要更长时间（实际上通常会阻止连接发生），但通常在正常运行后正常运行那。

In my testing I've seen if you call it multiple times prior to being connected, it will take longer to actually connect (and often actually prevents a connection from occurring), but usually functions as normal after that.

然而，我注意到的一件大事是你在<$内部尝试调用 connectPeripheral： c $ c> didConnectPeripheral：回调，你将自己置于一个无限循环中，一遍又一遍地继续返回 didConnectPeripheral：。

However, the one massive thing I've noticed is if you try calling connectPeripheral: inside of the didConnectPeripheral: callback, you will put yourself in an infinite loop that keeps returning on didConnectPeripheral: over and over again.

长话短说，每一个 connectPeripheral：调用都应与 cancelPeripheralConnection匹配：（或 didDisconnectPeripheral：）调用，如果您不希望发生这样的未定义行为。

Long story short, every single connectPeripheral: call should be matched with a cancelPeripheralConnection: (or didDisconnectPeripheral:) call if you don't want undefined behavior like this to happen.

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