问题:

I try to get the number of queries I found in background. So I use countobjects method to get the number, but system has warning about it "A long-running operation is being executed on the main thread."

PFQuery *query2=[PFQuery queryWithClassName:@"Comments"]; [query2 whereKey:@"Name" equalTo:globalName]; NSInteger CommentPoint=query2.countObjects;

so i change to this method, but i can't get numbers of count print in my console.

 [query2 countObjectsInBackgroundWithBlock:^(int count, NSError *error)  {    if (!error) {         // The count request succeeded. Log the count        NSLog(@"Sean has played %d games", count);    } else {        // The request failed    } }];

My another question is how can I assign "count" to an Global NSinteger?

I tried this

PFQuery *query=[PFQuery queryWithClassName:@"AllPost"]; [query whereKey:@"PostUser" equalTo:globalName]; NSLog(@"globalname %@",globalName); [query countObjectsInBackgroundWithBlock:^(int count, NSError *error) {     if (!error) {         self.objectCount = [NSNumber numberWithInt:count];         // The count request succeeded. Log the count         NSLog(@"Sean has played %d games", count);     } else {         NSLog(@"error");     } }];  NSLog(@"objectCount %@",self.objectCount);

this is what console print out

2015-07-02 19:17:16.721 ParseNews[12598:608067] globalname Sheng 2015-07-02 19:17:16.721 ParseNews[12598:608067] objectCount (null)

回答1:

One solution for the 'how to save' could be to create a global NSNumber property:

@property (strong, nonatomic) NSNumber *objectCount;

then, inside the block:

self.objectCount = [NSNumber numberWithInt:count];

转载请标明出处:Objective c parse, count objects in background

文章来源: Objective c parse, count objects in background

标签

bac