Question

我创建了一个PFQuery来获取类“Albums”（512个对象）中的所有对象。

当我创建PFQuery并在其上调用findObjectsInBackgroundWithBlock方法时，它只返回100个对象而不是512，尽管我添加了行

query.limit=1000;

我的代码：

PFQuery *query=[PFQuery queryWithClassName:@"Albums"];
query.limit=1000;

[query findObjectsInBackgroundWithBlock:^(NSArray * _Nullable objects, NSError * _Nullable error) {
    if (error) {
        NSLog(@"Error: %@",[error description]);
    }
    NSLog(@"%lu",objects.count); //print - 100
    self.albums=objects;
    NSLog(@"%ld",(long)self.supermarkets.count); //print - 100
}];

Answer 1

试试这个 https://parse.com/questions/fetch-all-data-in-a-table-using-pfquery ..

NSMutableArray *allObjects = [NSMutableArray array];
NSUInteger limit = 0;
__block NSUInteger skip = 0;
PFQuery *query = [PFQuery queryWithClassName:@"MapInfo"];
[query setLimit: limit];
[query setSkip: skip];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
  if (!error) {
    // The find succeeded. Add the returned objects to allObjects
    [allObjects addObjectsFromArray:objects];
    if (objects.count == limit) {
      // There might be more objects in the table. Update the skip value and execute the query again.
      skip += limit;
      [query setSkip: skip]; //from here you run the query again with new offset  

    }
  } else {
    // Log details of the failure
    NSLog(@"Error: %@ %@", error, [error userInfo]);
  }
}];

PFQuery只返回100个对象（iOS）

1 个答案: