[英]CoreBluetooth on iOS10: Timeout after CBPeripheral discoverServices
Our App connects to Bluetooth LE Devices via CoreBluetooth. 我们的应用程序通过CoreBluetooth连接蓝牙LE设备。
On iOS 8 and 9 everything works correctly. 在iOS 8和9上,一切正常。 On iOS 10 we geht a Timeout Error (
Error Domain=CBErrorDomain Code=6 "The connection has timed out unexpectedly."
) 在iOS 10上,我们发现超时错误(
Error Domain=CBErrorDomain Code=6 "The connection has timed out unexpectedly."
)
in the CBCentralManagerDelegate:
在
CBCentralManagerDelegate:
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error;
after calling discoverServices
on a connected CBPeripheral
. 在连接的
CBPeripheral
上调用discoverServices
之后。
Does anyone know whats going wrong? 有谁知道什么出错了? Is this an iOS 10 issue?
这是iOS 10问题吗? Is there a certain BLE Log to check?
是否有某个BLE日志需要检查?
Setup iOS 10.0.1 (14A403) on iPad Pro 9.7 with a Nordic Semiconductor nRF51822 使用Nordic Semiconductor nRF51822在iPad Pro 9.7上安装iOS 10.0.1(14A403)
OK, I solved the Problem. 好的,我解决了问题。 I mixed up
CBUUID
and NSUUID
我混淆了
CBUUID
和NSUUID
starting with iOS 10 CBPeripheral discoverServices
only accepts CBUUID
. 从iOS 10开始
CBPeripheral discoverServices
只接受CBUUID
。 NSUUID
does not work anymore. NSUUID
不再起作用了。 Maybe NSUUID
only worked accidentally on older iOS versions. 也许
NSUUID
只是在较旧的iOS版本上偶然工作。 The documentation clearly states: 文件明确指出:
A list of
CBUUID
objects representing the service types to be discovered.表示要发现的服务类型的
CBUUID
对象列表。
NSArray *services = @[
[CBUUID UUIDWithString:ServiceUUID] //Correct
//[[NSUUID alloc] initWithUUIDString:ServiceUUID] //Does work on iOS 9 but not on iOS 10
];
[self.peripheral discoverServices:services];
looking forward to port the app to strongly typed Swift. 期待将应用程序移植到强类型Swift。
Make sure you aren't allowing the CBPeripheral
to be deallocated before peripheral:didDiscoverServices:
is called in your CBCentralManagerDelegate
. 请确保您不允许
CBPeripheral
之前被释放peripheral:didDiscoverServices:
叫你CBCentralManagerDelegate
。 This is easily accomplished by assigning the peripheral to a property, eg: 这可以通过将外围设备分配给属性来轻松完成,例如:
@property (nonatomic, string) CBPeripheral *peripheral;
...
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {
self.peripheral = peripheral
[peripheral discoverServices:<desired service UUIDs>];
...
}
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