requestAuthorizationToShareType 方法在 iOS 8 Xcode 6 中不显示权限提示

Question

-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if ([HKHealthStore isHealthDataAvailable]){
    NSSet *writeDataTypes = [self dataTypesToWrite];
    NSSet *readDataTypes = [self dataTypesToRead];
    [self.healthStore requestAuthorizationToShareTypes:writeDataTypes readTypes:readDataTypes completion:^(BOOL success, NSError *error) {
        NSLog(@"%s",__func__);
        if (!success) {
            NSLog(@"You didn't allow HealthKit to access these read/write data types. In your app, try to handle this error gracefully when a user decides not to provide access. The error was: %@. If you're using a simulator, try it on a device.", error);
            return;
        }
        dispatch_async(dispatch_get_main_queue(), ^{
            // Update the user interface based on the current user's health information.
            NSLog(@"=========================== %s",__func__);
        });
    }];
}

}

requestAuthorizationToShareType 不回调完成方法。

Answer 1

我遇到了类似的问题，权限框没有出现并且没有正确设置HKHealthStore，事先为我修复了这个问题

self.healthStore = [[HKHealthStore alloc] init];

Answer 2

下面是一个示例实现，它返回类型而不是字符串，如注释部分所述。

-(NSSet*)datatypesToWrite {
   NSArray *quantityTypes =
   @[HKQuantityTypeIdentifierHeartRate,
     HKQuantityTypeIdentifierBodyTemperature,
     HKQuantityTypeIdentifierBloodPressureSystolic,
     HKQuantityTypeIdentifierBloodPressureDiastolic,
     HKQuantityTypeIdentifierRespiratoryRate];
   NSMutableArray *hkTypes = [[NSMutableArray alloc] init];
   for (NSString *identifier in quantityTypes) {
     HKQuantityType *quantType =
      [HKObjectType quantityTypeForIdentifier:identifier];
     [hkTypes addObject:quantType];
   }
   // Make sure the types are of the correct style (Quantity, Category, Etc.)
   HKCategoryType *catType =
    [HKObjectType categoryTypeForIdentifier:HKCategoryTypeIdentifierSleepAnalysis];
   [hkTypes addObject:catType];
   return [[NSSet alloc] initWithArray:hkTypes];
}

每次首次请求新类型时，都会显示模式权限对话框(但如果重新提示输入未授予的权限，则不会再次显示(。Apple 的指导方针是提示您可能需要的所有内容，但如果我知道有人只要求保存到其中的几种类型中，那么预先请求 12 种类型对我来说有点违反最佳实践。