有关ios健康记步的算法

//.首先ios7以上的系统 有运动协处理器的设备 用户必须是允许读取健身数据的前提下
if ([CMStepCounter isStepCountingAvailable]) {
NSCalendar *calendar = [NSCalendar currentCalendar];

    NSDate *now = [NSDate date];
    _dateNow = now ;
    NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:now];
    
    NSDate *startDate = [calendar dateFromComponents:components];
    
    NSDate *endDate = [calendar dateByAddingUnit:NSCalendarUnitDay value:1 toDate:startDate options:0];
    [self.stepCounter queryStepCountStartingFrom:startDate to:endDate toQueue:self.operationQueue withHandler:^(NSInteger numberOfSteps, NSError * _Nullable error) {
        NSString *text = [NSString stringWithFormat:@"步數: %ld", (long)numberOfSteps];
        //weakSelf.bu.text = (long)numberOfSteps ;
        weakSelf.bu.text =   [NSString stringWithFormat:@"%ld", (long)numberOfSteps];
        weakSelf.bushu = [NSString stringWithFormat:@"%ld", (long)numberOfSteps];
        //  [self showHint:[NSString stringWithFormat:@"%ld", (long)numberOfSteps]];
        //weakSelf.stepsLabel.text = text;
    }];
    self.stepCounter = [[CMStepCounter alloc] init];
           [self.stepCounter startStepCountingUpdatesToQueue:self.operationQueue
                                             updateOn:20
                                          withHandler:
     ^(NSInteger numberOfSteps, NSDate *timestamp, NSError *error) {
         
         dispatch_async(dispatch_get_main_queue(), ^{
             
             if (error) {
                 UIAlertView *error = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请允许资源家访问运动与健康" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
                 [error show];
             }
             else {
                 [self.stepCounter queryStepCountStartingFrom:startDate to:endDate toQueue:self.operationQueue withHandler:^(NSInteger numberOfSteps, NSError * _Nullable error) {
                     NSString *text = [NSString stringWithFormat:@"步數: %ld", (long)numberOfSteps];
                     //weakSelf.bu.text = (long)numberOfSteps ;
                    weakSelf.bu.text =   [NSString stringWithFormat:@"%ld", (long)numberOfSteps];
                    weakSelf.bushu = [NSString stringWithFormat:@"%ld", (long)numberOfSteps];
                   //  [self showHint:[NSString stringWithFormat:@"%ld", (long)numberOfSteps]];
                     //weakSelf.stepsLabel.text = text;
                 }];

//
// NSString *text = [NSString stringWithFormat:@"步數: %ld", weakSelf.numBu +(long)numberOfSteps];
// NSDate *nowDa = [NSDate date];
// NSString *text1 = [NSString stringWithFormat:@"%ld", weakSelf.numBu +(long)numberOfSteps];
// self.bu.text = text1 ;
// self.bushu = text1 ;
// [self showHint:text];

             }
         });
     }];
}

//開波
if ([CMMotionActivityManager isActivityAvailable]) {
    
    self.activityManager = [[CMMotionActivityManager alloc] init];
    
    [self.activityManager startActivityUpdatesToQueue:self.operationQueue
                                          withHandler:
     ^(CMMotionActivity *activity) {
         
         dispatch_async(dispatch_get_main_queue(), ^{
             
         });
     }];
}
//5S  以下的设备 需要自己太高算法去计算   

NSString * st =[[NSUserDefaults standardUserDefaults]objectForKey:@"bushu"];
stepCount = st.intValue ;
__weak FirstViewController *weakSelf = self;
[SOMotionDetector sharedInstance].motionTypeChangedBlock = ^(SOMotionType motionType) {
NSString *type = @"";
switch (motionType) {
case MotionTypeNotMoving:
type = @"Not moving";
break;
case MotionTypeWalking:
type = @"Walking";
break;
case MotionTypeRunning:
type = @"Running";
break;
case MotionTypeAutomotive:
type = @"Automotive";
break;
}

};

[SOMotionDetector sharedInstance].locationChangedBlock = ^(CLLocation *location) {

};

[SOMotionDetector sharedInstance].accelerationChangedBlock = ^(CMAcceleration acceleration) {

};

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) {
    [SOMotionDetector sharedInstance].useM7IfAvailable = YES; //Use M7 chip if available, otherwise use lib's algorithm
}

[[SOMotionDetector sharedInstance] startDetection];
[[SOStepDetector sharedInstance] startDetectionWithUpdateBlock:^(NSError *error) {
    if (error) {
        NSLog(@"%@", error.localizedDescription);
        return;
    }
    NSDate *nowD = [NSDate date];

        stepCount++;

}