代码5-1

//绑定输出口
IBOutlet BMKMapView* _mapView;
//初始化定位服务
BMKLocationService* _locService;
_locService= [[BMKLocationService alloc] init];
//开启定位服务
[_locService startUserLocationService];
//进入罗盘+跟随状态
_mapView.userTrackingMode;

//POI搜索
 *citySearchOption = [[BMKCitySearchOption alloc]init];
citySearchOption.city=@"武汉";
citySearchOption.keyword =@"轨道交通2号线";
[_poisearch poiSearchInCity:citySearchOption];
//BusLine搜索
 *buslineSearchOption;
buslineSearchOption = [[BMKBusLineSearchOption alloc]init];
 buslineSearchOption.city= @"武汉";
buslineSearchOption.busLineUid= strKey;
[_buslinesearch busLineSearch:buslineSearchOption];

//提取当前和下一站的公交站点
currentStation = [busStations objectAtIndex:currentStationIndex];
nextStation = [busStations objectAtIndex:currentStationIndex+1];
//获得当前位置和下一个公交站点的位置
currentPoint = BMKMapPointForCoordinate(currentLocation.coordinate);
nextPoint = BMKMapPointForCoordinate(CLLocationCoordinate2DMake
    ([nextStation[@"latitude"] floatValue], [nextStation[@"longitude"] floatValue]));
//计算两点之间的距离
distance = BMKMetersBetweenMapPoints(currentPoint,nextPoint);
//判断是否到站
if(distance >=10){
    stateText.text = [NSString stringWithFormat:@"距离%@还有%.2f米",nextStation[@"station"],distance];
}else if(distance<10){
    stateText.text = [NSString stringWithFormat:@"即将到达%@",nextStation[@"station"]];
    currentStationIndex = currentStationIndex+1;
}

//设置传感器获取数据的时间间隔（毫秒）
speed = 100
motionManager.accelerometerUpdateInterval = speed
motionManager.gyroUpdateInterval = speed
motionManager.magnetometerUpdateInterval = speed
motionManager.deviceMotionUpdateInterval = speed

//传感器管理器初始化
let motionManager = CMMotionManager()
if #available(iOS 9.0, *) {
    locationManager.allowsBackgroundLocationUpdates = true
} 
判断是否支持传感器
if motionManager.isAccelerometerAvailable {
    motionManager.accelerometerUpdateInterval = 0.1
    motionManager.startAccelerometerUpdates()
    print("开始加速度检测")
}else {
    UIAlertView(title: "提示", message: "不支持加速度的设备", delegate: nil, cancelButtonTitle: "确定")
    print("不支持加速度的设备")
    return;
}
if motionManager.isGyroAvailable {
    motionManager.gyroUpdateInterval = speed
    motionManager.startGyroUpdates()
    print("开始角速度检测")
}else {
    UIAlertView(title: "提示", message: "不支持陀螺仪的设备", delegate: nil, cancelButtonTitle: "确定")
    print("不支持陀螺仪的设备")
}
     

if let a = motionManager.accelerometerData
{
    accx.value=Float(a.acceleration.x)
    accy.value=Float(a.acceleration.y)
    accz.value=Float(a.acceleration.z)
    cos=sqrt((x*x+z*z)/(x*x+y*y+z*z))
    theta=acos(cos)/3.1415926*180
    write("acc,\(x),\(y),\(z)")
    show+=NSString(format: "加速度\nx=%.2f\ny=%.2f\nz=%.2f\nθ=%.2f", x,y,z,theta) as String
    if theta<1 {
        show+="\t\t水平放置"
    }else if theta>85 {
        show+="\t\t垂直放置"
    }
}

//初始化
var path = NSHomeDirectory()+"/Documents/out.csv"
var file=FileHandle()
var filemanager=FileManager()
//设置文件路径并获取文件大小
let fileSize = try FileManager.default.attributesOfItem(atPath: path)[FileAttributeKey.size]
//写入文件函数
func write(_ s:String){
    if wirteswitch.isOn {
        let s2="\(getTime()),\(s)\n"
        file.seekToEndOfFile()
        file.write(s2.data(using: String.Encoding.utf8, allowLossyConversion: true)!)
        getsize()
        print(s2)
    }
}

    @IBAction func share(_ sender: AnyObject) {
        let url = URL(string: "file://"+path)
        print(url)
        let controler = UIActivityViewController(activityItems: [url!], applicationActivities: nil)
        present(controler, animated: true, completion: nil)
        if controler.responds(to: #selector(getter: UIViewController.popoverPresentationController)) {
            let presentationController = controler.popoverPresentationController
            presentationController?.sourceView = sharebutton
        }
    }

    //判断状态，1为加速，2为减速，0为正常行驶
    func statusJudges() ->NSInteger{
        if(self.isLimitPoint(acc: getyAccelerValue())&&self.getyAccelerValue() < 0.4){
            var countTime = accelerTime/2
            var judge = 0
            var state = 0
            let queue = DispatchQueue(label: "mars.judgeAcceleration", qos: .default, attributes: .concurrent)
            let codeTimer = DispatchSource.makeTimerSource(queue:queue)
            codeTimer.scheduleRepeating(deadline: .now(), interval: .milliseconds(200))
            codeTimer.setEventHandler(handler: {
                countTime = countTime-0.2
                if countTime <= 0{
                    codeTimer.cancel()
                }
                if (self.getyAccelerValue()<=0.4){
                    judge = judge+1
                }
                if (judge>=8){
                    state = 1
                }else{
                    state = 0
                }
            })
            codeTimer.activate()
            sleep(3)
            if (state == 1){
                 print(getTime(),"正在加速")
                return 1
            }else{
                print(getyAccelerValue())
                print(getTime(),"达到加速值，但不在加速")
                return 0
            }
        }else if(self.isLimitPoint(acc: getyAccelerValue())&&getyAccelerValue() >= 0.6){
            var countTime = decelerTime/2
            var judge = 0
            var state = 0
            let queue = DispatchQueue(label: "mars.judgeDeceleration", qos: .default, attributes: .concurrent)
            let codeTimer = DispatchSource.makeTimerSource(queue:queue)
            codeTimer.scheduleRepeating(deadline: .now(), interval: .milliseconds(200))
            codeTimer.setEventHandler(handler: {
                countTime = countTime-0.2
                if countTime <= 0{
                    codeTimer.cancel()
                }
                if (self.getyAccelerValue()>=0.6){
                    judge = judge+1
                }
                if (judge>=8){
                    state = 1
                }else{
                    state = 0
                }
            })
            codeTimer.activate()
            sleep(3)
            if (state == 1){
                print(getTime(),"正在减速")
                return 2
            }else{
                print(getTime(),"达到减速值，但不在减速")
                return 0
            }
        }else{
            print(getTime(),"正常行驶")
            return 0
        }
    }

public func isLimitPoint(acc:Float) -> Bool {
        if(acc >= 0.6 || acc <= 0.4){
            return true
        }
        else{
            return false
        }
    }

            //加速状态检测  
            var countTime = accelerTime/2
            var judge = 0
            var state = 0
            let queue = DispatchQueue(label: "mars.judgeAcceleration", qos: .default, attributes: .concurrent)
            let codeTimer = DispatchSource.makeTimerSource(queue:queue)
            codeTimer.scheduleRepeating(deadline: .now(), interval: .milliseconds(200))
            codeTimer.setEventHandler(handler: {
                countTime = countTime-0.2
                if countTime <= 0{
                    codeTimer.cancel()
                }
                if (self.getyAccelerValue()<=0.4){
                    judge = judge+1
                }
                if (judge>=8){
                    state = 1
                }else{
                    state = 0
                }
                
            })
            codeTimer.activate()
            sleep(3)
            if (state == 1){
                 print(getTime(),"正在加速")
                return 1
            }else{
                print(getyAccelerValue())
                print(getTime(),"达到加速值，但不在加速")
                return 0
            }

    //创建StatusJudgement实例
    StatusJudgement *statusJudgement;
    NSInteger stationCount = [busStations count];
    dispatch_queue_t queue = dispatch_queue_create("mars.refresh", DISPATCH_QUEUE_CONCURRENT);
    dispatch_async(queue, ^{
        state = [statusJudgement statusJudges];
        //主线程刷新UI
        dispatch_async(dispatch_get_main_queue(), ^{
            if(state == 0){
                stateText.text = @"正常行驶";
                NSLog(@"地铁正常行驶");
            }else if (state == 1){
                stateText.text = @"离站加速";
                NSLog(@"地铁离站加速");
            }else if(state == 2){
                stateText.text = @"到站减速";
                NSLog(@"地铁到站减速");
            }
        });
        NSLog(@"总共%ld站",stationCount);
    });