CODEWITHSUNDEEP
ioscore-bluetooth
chwi
chwi

Reputation: 2802

App don't discover services when reconnecting after power cycling bluetooth

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.

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?

Upvotes: 5

Views: 1043

Answers (2)

陈健 Mark
陈健 Mark

Reputation: 351

If the central state is CBManagerStatePoweredOn, and call the cancelPeripheralConnection API like this:

[self.centralManager cancelPeripheralConnection:self.peripheral];

the callback method centralManager:didDisconnectPeripheral:error: will be called. But if the state is not CBManagerStatePoweredOn, such as CBManagerStatePoweredOff, this callback will not execute.

Upvotes: 0

Tommy Devoy
Tommy Devoy

Reputation: 13549

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];

Upvotes: 1

Related Questions