我刚刚做了一个 HKSourceQuery 并得到了一些结果。当我做一个println
结果,我得到了这个:<HKSource:0x156c1520 "Health" (com.apple.Health)>//description of the object
我如何使用它来使用HKQuery.predicateForObjectsFromSource(/* source goes here */)
这是 Obj-c 中的示例代码,
NSSortDescriptor *timeSortDesriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO];
HKQuantityType *quantityType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned];
HKSourceQuery *sourceQuery = [[HKSourceQuery alloc] initWithSampleType:quantityType samplePredicate:nil completionHandler:^(HKSourceQuery *query, NSSet *sources, NSError *error) {
//Here, sources is a set of all the HKSource objects available for "quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned"
HKSource *targetedSource = [[sources allObjects] firstObject];//Assume this as your targeted source
if(targetedSource)
{
NSPredicate *sourcePredicate = [HKQuery predicateForObjectsFromSource:targetedSource];
HKSampleQuery *query = [[HKSampleQuery alloc] initWithSampleType:quantityType predicate:sourcePredicate limit:HKObjectQueryNoLimit sortDescriptors:[NSArray arrayWithObject:timeSortDesriptor] resultsHandler:^(HKSampleQuery *query, NSArray *results, NSError *error) {
//results array contains the HKSampleSample objects, whose source is "targetedSource".
}];
[self.healthStore executeQuery:query];
}
}];
[self.healthStore executeQuery:sourceQuery];
更新1:
- 无法构建
HKSource
手动使用对象[HKSource alloc] init]
。在 HealthKit 框架中,Apple 限制使用以下方式创建对象init
对于大多数香港课程。
- 我相信你能找到你的
HKSource
对象从sources
设置使用HKSource
属性如name
and bundleIdentifier
.
这是示例代码,
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.source.bundleIdentifier = 'com.XXXX.XXXXX'"];
NSArray *tempResults = [[sources allObjects] filteredArrayUsingPredicate:predicate];
HKSource *targetedSource = [tempResults firstObject];
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