引入HealthKit库
#import <HealthKit/HealthKit.h>
创建 HKHealthStore
@property (nonatomic, strong) HKHealthStore *healthStore;
- (void)viewDidLoad {
[super viewDidLoad];
//查看healthKit在设备上是否可用,ipad不支持HealthKit
if(![HKHealthStore isHealthDataAvailable])
{
NSLog(@"设备不支持healthKit");
}
//创建healthStore实例对象
self.healthStore = [[HKHealthStore alloc] init];
//设置需要获取的权限这里仅设置了步数
HKObjectType *stepCount = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
NSSet *healthSet = [NSSet setWithObjects:stepCount, nil];
//从健康应用中获取权限
[self.healthStore requestAuthorizationToShareTypes:nil readTypes:healthSet completion:^(BOOL success, NSError * _Nullable error) {
if (success)
{
NSLog(@"获取步数权限成功");
//获取步数后我们调用获取步数的方法
HKQuantityType *stepType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
[self fetchSumOfSamplesTodayForType:stepType unit:[HKUnit countUnit] completion:^(double stepCount, NSError *error) {
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"%@",[NSString stringWithFormat:@"%.f",stepCount]);
});
}];
}
else
{
NSLog(@"获取步数权限失败");
}
}];
}
#pragma mark - 读取健康数据
- (void)fetchSumOfSamplesTodayForType:(HKQuantityType *)quantityType unit:(HKUnit *)unit completion:(void (^)(double, NSError *))completionHandler {
NSPredicate *predicate = [self predicateForSamplesToday];
HKStatisticsQuery *query = [[HKStatisticsQuery alloc] initWithQuantityType:quantityType quantitySamplePredicate:predicate options:HKStatisticsOptionCumulativeSum completionHandler:^(HKStatisticsQuery *query, HKStatistics *result, NSError *error) {
HKQuantity *sum = [result sumQuantity];
if (completionHandler) {
double value = [sum doubleValueForUnit:unit];
completionHandler(value, error);
}
}];
[self.healthStore executeQuery:query];
}
#pragma mark - 获取当天的步数
- (NSPredicate *)predicateForSamplesToday {
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *now = [NSDate date];
NSDate *startDate = [calendar startOfDayForDate:now];
NSDate *endDate = [calendar dateByAddingUnit:NSCalendarUnitDay value:1 toDate:startDate options:0];
return [HKQuery predicateForSamplesWithStartDate:startDate endDate:endDate options:HKQueryOptionStrictStartDate];
}