誰もがこれを縮小する方法を知っているので、QueryForTableメソッドのメインスレッドでクエリを実行する必要はありませんか?私はParse.comを使用しています
//Find who are the users following (RELATIONSHIP OBJECT)
PFQuery *followeesQuery = [PFQuery queryWithClassName:@"Relationship"];
[followeesQuery whereKey:@"Follower" equalTo:[PFUser currentUser]];
NSArray *followees = [followeesQuery findObjects];
//Filter followees
self.followees = [[NSMutableArray alloc] initWithCapacity:[followees count]];
for (int i = 0; i < [followees count]; i++) {
PFObject *followee = followees[i];
PFUser *user = (PFUser *)[followee objectForKey:@"User"]; //USER OBJECT
[self.followees addObject:user];
}
PFQuery *nearbyPhotosQuery = [PFQuery queryWithClassName:@"Photo"]; //PHOTO OBJECT
[nearbyPhotosQuery whereKey:@"User" notContainedIn:self.followees];
[nearbyPhotosQuery whereKey:@"Location" nearGeoPoint:self.userCurrentLocation withinKilometers:10];
PFQuery *followersPhotoQuery = [PFQuery queryWithClassName:@"Photo"]; //PHOTO OBJECT
[followersPhotoQuery whereKey:@"User" containedIn:self.followees];
NSMutableSet *set = [NSMutableSet setWithArray:[nearbyPhotosQuery findObjects]];
[set addObjectsFromArray:[followersPhotoQuery findObjects]];
NSArray *targetPhotoObjects = [set allObjects];
NSMutableArray *targetIDs = [[NSMutableArray alloc] initWithCapacity:[targetPhotoObjects count]];
for (int i = 0; i < [targetPhotoObjects count] ; i++) {
PFObject *photoObject = targetPhotoObjects[i];
[targetIDs addObject:photoObject.objectId];
}
PFQuery *targetPhotoQuery = [PFQuery queryWithClassName:@"Photo"];
[targetPhotoQuery whereKey:@"objectId" containedIn:targetIDs];
return targetPhotoQuery;