ios - CBPeripheral setNotifyValue WithResponse 不调用 didWriteValueForCharacteristic

Question

我有一个 BLE 基金可以将数据写入外围服务:

func writeData(data: [Int8]) {
    let character = CBMutableCharacteristic(type: cuivienenCharacterUUID, properties: [.Write, .Read, .Notify], value: nil, permissions: [.Readable, .Writeable])
    test_peripheral.writeValue(NSData(bytes: data, length: data.count), forCharacteristic: character, type: .WithResponse)
    test_peripheral.setNotifyValue(true, forCharacteristic: character)
}

我已经初始化了 test_peripheral 并将其委托(delegate)设置为 self。但是test_peripheral.writeValue从未打过电话func peripheral(peripheral: CBPeripheral, didWriteValueForCharacteristic characteristic: CBCharacteristic, error: NSError?) 。我连错误消息都收不到!

test_peripheral.setNotifyValue也是如此。它从不调用func peripheral(peripheral: CBPeripheral, didUpdateNotificationStateForCharacteristic characteristic: CBCharacteristic, error: NSError?)

我的代码有什么问题吗？

Answer 1

CB特性

test_peripheral.writeValue(NSData(bytes: data, length: data.count), forCharacteristic: character, type: .WithResponse)

不应由您自己的代码初始化。您应该在

中找到您的 CBCharacteristic

func peripheral(peripheral: CBPeripheral, didDiscoverCharacteristicsForService service: CBService, error: NSError?)

然后使用它。