SocketScan 在 Swift 中获取电池电量

无论我尝试什么，我目前都无法从 iOS/SocketScan API 获取电池电量。我使用的是 10.3.36 版本，这是迄今为止我的代码：

func onDeviceArrival(result: SKTRESULT, device deviceInfo: DeviceInfo!) {
    print("onDeviceArrival:\(deviceInfo.getName())")
scanApiHelper.postGetBattery(deviceInfo, target: self, response: #selector(onGetBatteryInfo))

}

func onGetBatteryInfo(scanObj: ISktScanObject) {

    let result:SKTRESULT = scanObj.Msg().Result()
    print("GetBatteryInfo status:\(result)")

    if (result == ESKT_NOERROR) {
        let batterylevel = scanObj.Property().getUlong()
        print("Battery is:\(batterylevel)")
    } else {
        print("Error GetBatteryInfo status:\(result)")
    }

但是，我得到的值是：

GetBatteryInfo status:0

Battery is:1677741312

如果我的代码正确，那么如何使电池结果返回有意义的结果，例如百分比？
如果我距离很远，那么如何取回电池电量、固件版本等信息？

Thanks

David

EDIT: SKTBATTERY_GETCURLEVELSwift 不支持。但是，那docs http://www.socketmobile.com/docs/default-source/developer-documentation/scanapi.pdf?sfvrsn=2解释电池电量响应包括分别编码在第一、第二和第三字节中的最小、当前和最大电量。

以下相当于使用SKTBATTERY_GETCURLEVEL

Swift

func onGetBatteryInfo(scanObj: ISktScanObject) {

    let result:SKTRESULT = scanObj.Msg().Result()

    if(SKTSUCCESS(result)){

        let batteryInfo = scanObj.Property().getUlong();

        let batteryMin = ((batteryInfo >> 4) & 0xff);
        let batteryCurrent = ((batteryInfo >> 8) & 0xff);
        let batteryMax = ((batteryInfo >> 12) & 0xff);

        let batteryPercentage = batteryCurrent / (batteryMax - batteryMin);
        print("Battery is:\(batteryPercentage)")

        self.setBatteryLevel = batteryPercentage
        self.tableView.reloadData

    } else {

        print("Error GetBatteryInfo status:\(result)")
    }
}

Objective-C

-(void) onGetBatteryInfo:(ISktScanObject*)scanObj {

SKTRESULT result=[[scanObj Msg]Result];
if(SKTSUCCESS(result)){

    long batteryLevel = SKTBATTERY_GETCURLEVEL([[scanObj Property] getUlong]);
    NSLog(@"BatteryInfo %ld", batteryLevel);

    [self setBatteryLevel:batteryLevel];
    [self.tableView reloadData];

} else {

    NSLog(@"Error GetBatteryInfo status: %ld",result);
}
}