每当在我的IOS应用程序中运行以下代码时，当我为NSFutableSet设置PFFobject键的值（下面标有“TROUBLE”的行）时，它就会神奇地停止运行。如果我设置一个断点，计算机就不会到达下一个断点。我甚至在Parse仪表板中添加了一个列，其中“peopleWhoFavorited”是一个Object类型，问题仍然存在。为什么？代码：
BOOL POSTING; //prevents repitious saving when user presses button multiple times.
-(void)post {
if (!(self.data==nil) && ![self.postField.text isEqualToString:@""] && !POSTING && ![self.postField.textColor isEqual:[UIColor grayColor]]) { //hackey with that grey color, but oh well.
POSTING=YES;
PFFile *file = [PFFile fileWithName:@"data" data:self.data];
[file saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (succeeded) {
PFObject *post = [PFObject objectWithClassName:@"post"];
[post setObject:@(0) forKey:@"voteScore"];
[post setObject:@(0) forKey:@"numTimesReported"];
[post setObject:@[] forKey:@"whoReported"];
[post setObject:@[] forKey:@"comments"];
//And now, the favorited sets and upvote and downvote sets...
NSMutableSet * favoritedSet=[[NSMutableSet alloc] init];
[post setObject:favoritedSet forKey:@"peopleWhoFavorited"]; "TROUBLE" //magical stopping point
NSMutableSet * peopleWhoUpVoted=[[NSMutableSet alloc] init];
//[post setObject:peopleWhoUpVoted forKey:@"peopleWhoUpVoted"];
NSMutableSet * peopleWhoDownVoted=[[NSMutableSet alloc] init];
//[post setObject:peopleWhoDownVoted forKey:@"peopleWhoDownVoted"];
//
//And a set for the people who report the post.
NSMutableSet * peopleWhoReported=[[NSMutableSet alloc] init];
//[post setObject:peopleWhoReported forKey:@"peopleWhoReported"];
//
[post setObject:self.postField.text forKey:@"postName"];
[post setObject:self.dataTypeString forKey:@"postType"]; //either a movie or an image
[post setObject:[NSDate date] forKey:@"dateMade"]; //hackey, equivalent of createdAt to avoid weird behaivor
[post setObject:file forKey:@"data"];
NSString * deviceIDString=[[[UIDevice currentDevice] identifierForVendor] UUIDString];
[post setObject:deviceIDString forKey:@"deviceThatPosted"];
[PFGeoPoint geoPointForCurrentLocationInBackground:^(PFGeoPoint *geoPoint, NSError *error) {
if (!error) {
// set the location of the post.
[post setObject:geoPoint forKey:@"location"];
//save the post in the background
[post saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (succeeded) {
NSLog(@"Saved.");
[self dismissViewControllerAnimated:YES completion:^{
NSLog(@"Posted and Dismiss completed");
}];
POSTING=NO;
} else {
NSLog(@"%@", error);
POSTING=NO;
}
}];
} else{
NSLog(@"%@", error);
POSTING=NO;
}
}];
} else {
NSLog(@"%@", error);
POSTING=NO;
}
}];
}
}