CMStepCounter Sample

MYViewController.h

#import <UIKit/UIKit.h>
#import <CoreMotion/CoreMotion.h>

@interface MYViewController : UIViewController

@property (nonatomic, strong) CMStepCounter *stepCounter;

@end

MYViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.stepCounter = [[CMStepCounter alloc] init];
    NSDate *now = [NSDate date];
    NSDate *from = [NSDate dateWithTimeInterval:-60*60*24 sinceDate:now];
    __weak typeof(self) weakSelf = self;
    [self.stepCounter queryStepCountStartingFrom:from
                                              to:now
                                         toQueue:[NSOperationQueue mainQueue]
                                     withHandler:^(NSInteger numberOfSteps, NSError *error) {
                                         weakSelf.title = [@(numberOfSteps) stringValue];
                                     }];
}