我的 CoreBluetooth 应用程序需要启用客户端特征配置描述符中的“指示位”。这是我所做的:
- 开始扫描
 - 开始连接设备
 - 称呼
discoverServices discoverCharacteristics在回调内部调用-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
discoverDescriptorsForCharacteristic在回调内部调用-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
内部回调
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
我打了电话:
        if ( [[descriptor.UUID representativeString] isEqualToString:@"2902" ] )
        {
            const unsigned char raw_data[] = {0x02};
            NSData *myData = [NSData dataWithBytes: raw_data length: 2];
            [self.cBCP writeValue:myData forDescriptor:descriptor];
        }
但是我的应用程序在 : 中崩溃了writeVale。控制台中的错误消息是:
无法使用此方法编写客户端特征配置描述符!
任何想法?谢谢