最近的项目内容是给用户的健康数据做一个可视化的表格,现在把步数相关的统计查询之类的都已经完成了。其中遇到不少问题,都是由于不熟悉HeathyKit的操作。写下此文,希望能帮助第一次入手的人:
先上代码,获取相应的权限,这个App自己会弹窗出来提醒:
if(![HKHealthStore isHealthDataAvailable])
{
NSLog(@"设备不支持healthKit");
}
else{
//创建healthStore实例对象
self.healthStore = [[HKHealthStore alloc] init];
//设置需要获取的权限这里设置步数,活动热量
HKObjectType *stepCount = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
HKObjectType *stepCount1 = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned];
NSSet *healthSet = [NSSet setWithObjects:stepCount,stepCount1, 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
[self readStepCount];
}
else
{
NSLog(@"获取步数权限失败");
}
}];
}
接下来就是最关键的,如何正确使用合适的模块,得到你想要的数据。
1.设置想要获取的样本
2.新建一个查询的操作,并且设置对应的参数,最重要的莫过于 数据来源的时间段SamplePredicate。时间段在我使用的时候出现很多奇怪的问题,但往往都是时区和输出显示的问题。我会在后续的文章中补充时间这一细节。
请参考:
https://www.jianshu.com/p/ef9665c5734e
https://www.jianshu.com/p/7fcea5b65e76
代码如下:
NSLog(@"查询当日步数");
/////////////////
HKQuantityType *quantityType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
HKStatisticsQuery *query = [[HKStatisticsQuery alloc]initWithQuantityType:quantityType quantitySamplePredicate:[self predicateForSamplesToday] options:HKStatisticsOptionCumulativeSum completionHandler:^(HKStatisticsQuery * _Nonnull query, HKStatistics * _Nullable result, NSError * _Nullable error) {
if (error) {
//[self getCMPStepCount: queryResultBlock];
} else {
double stepCount = [result.sumQuantity doubleValueForUnit:[HKUnit countUnit]];
NSLog(@"当天行走步数 = %lf",stepCount);
}
}];
[self.healthStore executeQuery:query];
补充调用函数
#pragma mark - 构造当天时间段查询参数
- (NSPredicate *)predicateForSamplesToday {
NSDate *startDate = [self zeroOfDate];
NSDate *endDate = [self localOfDate];
//NSLog(@"开始%@ 结束%@",startDate,endDate);
NSPredicate *predicate = [HKQuery predicateForSamplesWithStartDate:startDate endDate:endDate options:HKQueryOptionNone];
return predicate;
}
//和today凌晨 日期的获取相同
- (NSDate *)zeroOfDate
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:NSUIntegerMax fromDate:[NSDate date]];
components.hour = 0;
components.minute = 0;
components.second = 0;
NSTimeInterval ts = (double)(int)[[calendar dateFromComponents:components] timeIntervalSince1970];
NSDate * date = [NSDate dateWithTimeIntervalSince1970:ts];
NSTimeZone *zone = [NSTimeZone systemTimeZone];
//NSLog(@"时区是%@",zone);
NSInteger interval = [zone secondsFromGMTForDate: date];
NSDate *localeZeroDate = [date dateByAddingTimeInterval: interval];
//NSLog(@"本地凌晨时间是%@",localeDate);
return localeZeroDate;
}
//当前时间
- (NSDate *)localOfDate
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:NSUIntegerMax fromDate:[NSDate date]];
components.hour = 0;
components.minute = 0;
components.second = 0;
NSTimeInterval ts = (double)(int)[[calendar dateFromComponents:components] timeIntervalSince1970];
NSDate * date = [NSDate dateWithTimeIntervalSince1970:ts];
NSTimeZone *zone = [NSTimeZone systemTimeZone];
//NSLog(@"时区是%@",zone);
self.HSFinterval = [zone secondsFromGMTForDate: date];//这里得到
NSDate *localeDate = [[NSDate date] dateByAddingTimeInterval: self.HSFinterval];
return localeDate;
}
本篇结束,后续分析设置正确的NSDate
网友评论