PFQuery 只返回 100 个对象 (iOS)

Posted 2023-03-12

【中文标题】PFQuery 只返回 100 个对象 (iOS)

【英文标题】：PFQuery returns just 100 objects (iOS)

【发布时间】：2016-01-04 08:08:17

【问题描述】：

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

当我创建一个 PFQuery 并对其调用 findObjectsInBackgroundWithBlock 方法时，它只返回 100 个对象而不是 512 个，尽管我添加了该行

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
];

【问题讨论】：

PFQuery Only Returning 100的可能重复

【参考方案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]);
  
];