电源循环蓝牙后重新连接时，应用程序不会发现服务 [英] App don't discover services when reconnecting after power cycling bluetooth

问题描述

当我连接到 CoreBluetooth 外围设备时切换蓝牙时，我在 centralManagerDidUpdateState centralManagerDidUpdateState中断开并删除了对我的外围设备的所有引用回调。

When I am toggling bluetooth while connected to a CoreBluetooth peripheral I do a disconnection and deletion of all references to my peripheral in the centralManagerDidUpdateState callback.

执行另一次扫描会找到并重新连接到设备并再次发出 discoverServices ，但这次是围绕回调 didDiscoverServices 永远不会发生。通过删除所有设置（常规 - >重置 - >重置所有设置）或重新启动它再次工作。正常断开/重新连接也有效。我如何解决这个问题或以编程方式删除iOS存储的所有缓存和UUID？

Doing another scan will find and reconnect to the device and again issue a discoverServices, but this time around the callback didDiscoverServices never happens. By deleting all settings (General -> Reset -> Reset all settings) or do a reboot it works again. Disconnect/reconnect as normal does also work. How can I work around this or delete all cache and UUID's stored by iOS programatically?

推荐答案

当你得到centralManager的回调时状态已更改为 CBCentralManagerStatePoweredOff ，您需要遍历所有外围设备并在其上调用 cancelConnection：。那你就好了。

When you get the callback that the centralManager state has changed to CBCentralManagerStatePoweredOff, you need to loop through all your peripherals and call cancelConnection: on them. Then you'll be good to go.

[_yourCentralManager cancelPeripheralConnection:yourPeripheral];

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