如何编辑广告数据？

Question

我需要从中央管理器编辑蓝牙外设的广告数据。

我试了很多..。

以下代码提供了详细信息：

1.外设连接后：

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {

    NSLog(@"Connection successfull to peripheral: %@",peripheral);
    peripheral.delegate = self;
    [peripheral discoverServices:nil];
    //Do somenthing after successfull connection.
}

2.发现服务：

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error {

    for (CBService *service in peripheral.services) {
        NSLog(@"Discovering characteristics for service %@", service);
        [peripheral discoverCharacteristics:nil forService:service];
    }

}

3.从服务中发现特征：

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error {

    for (CBCharacteristic *characteristic in service.characteristics) {
        if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"B0702880-A295-A8AB-F734-031A98A512DE"]]) {
            [peripheral readValueForCharacteristic:characteristic];
            NSLog(@"Reading value for characteristic %@", characteristic);
            [peripheral setNotifyValue:YES forCharacteristic:characteristic];
        }
    }
}

4.更新通知状态：

- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {


    NSLog(@"characteristic.properties--------------------->%lu",(unsigned long)characteristic.properties);


    if (error) {
        NSLog(@"Error changing notification state: %@",[error localizedDescription]);
    }
    // Notification has started
    if (characteristic.isNotifying) {
        NSLog(@"Notification began on %@", characteristic);
    }

    NSString* decodeString = @"teststring";
    NSData *encodeData = [decodeString dataUsingEncoding:NSUTF8StringEncoding];

    NSLog(@"to write----- %@",encodeData);


    if ((characteristic.properties & CBCharacteristicPropertyWrite) ||
        (characteristic.properties & CBCharacteristicPropertyWriteWithoutResponse))
    {
        [peripheral writeValue:encodeData forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];
    }
    else
    {
        NSLog(@"Not permit to write");
    }
}

5.更新外围设备中的写入值：

- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {

    if (error) {
        NSLog(@"Error writing characteristic value: %@",[error localizedDescription]);
    }

    NSData *data = characteristic.value;
    NSLog(@"FinalData:%@",data);
}

我是IOS.Helps的新手，非常感谢

提前谢谢..

Answer 1

没有从中央在外围设备上设置广告数据的一般方法。如果您想做这样的事情，您要么必须在外围设备上实现该功能(通过专门制作的GATT服务)，要么该功能是由产品以某种方式提供的。

还请注意，广告是链路层(LL)功能，而这些功能通常不会被iOS公开。BLE的iOS API是GAP/关贸总协定级别的。