CoreMotion.m

/*
2013-09-29 21:23:26.468 perf[3911:60b] Sep 26, 2013, 8:47 AM confidence high type walking  steps 16
2013-09-29 21:23:26.474 perf[3911:60b] Sep 26, 2013, 8:56 AM confidence medium type walking  steps 0
2013-09-29 21:23:26.492 perf[3911:60b] Sep 26, 2013, 9:08 AM confidence high type stationary  steps 25
...
*/
    
    if([CMMotionActivityManager isActivityAvailable]) {
        CMMotionActivityManager *cm = [[CMMotionActivityManager alloc] init];
        CMStepCounter *sc = [[CMStepCounter alloc] init];
        NSDate *today = [NSDate date];
        NSDate *lastWeek = [today dateByAddingTimeInterval:-(86400*7)];
        [cm queryActivityStartingFromDate:lastWeek toDate:today toQueue:[NSOperationQueue mainQueue] withHandler:^(NSArray *activities, NSError *error){
            for(int i=0;i<[activities count]-1;i++) {
                CMMotionActivity *a = [activities objectAtIndex:i];
                NSString *confidence = @"low";
                if (a.confidence == CMMotionActivityConfidenceMedium) confidence = @"medium";
                if (a.confidence == CMMotionActivityConfidenceHigh) confidence = @"high";
                NSString *motion = @"";
                if (a.stationary) motion = [motion stringByAppendingString:@"stationary "];
                if (a.walking) motion = [motion stringByAppendingString:@"walking "];
                if (a.running) motion = [motion stringByAppendingString:@"running "];
                if (a.automotive) motion = [motion stringByAppendingString:@"automotive "];
                
                // Now get steps as well
                [sc queryStepCountStartingFrom:a.startDate to:[[activities objectAtIndex:i+1] startDate] toQueue:[NSOperationQueue mainQueue] withHandler:^(NSInteger numberOfSteps, NSError *error) {
                    NSLog(@"%@ confidence %@ type %@ steps %ld", [NSDateFormatter localizedStringFromDate:a.startDate dateStyle:NSDateFormatterMediumStyle timeStyle:NSDateFormatterShortStyle], confidence, motion, numberOfSteps);
                }];
            }
        }];
    } else {
        NSLog(@"cm not ok");
    }