相关疑难解决方法(0)

我使用NSFetchResultsController在UITableView中显示100,000 +记录.这有效,但它很慢,特别是在iPad 1上.加载可能需要7秒钟,这对我的用户来说是一种折磨.

我也希望能够使用部分,但这至少会增加3秒的时间.

这是我的NSFetchResultsController:

- (NSFetchedResultsController *)fetchedResultsController {

    if (self.clientsController != nil) {
        return self.clientsController;
    }

    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Client" inManagedObjectContext:self.managedObjectContext];
    [request setEntity:entity];
    [request setPredicate:[NSPredicate predicateWithFormat:@"ManufacturerID==%@", self.manufacturerID]];
    [request setFetchBatchSize:25];

    NSSortDescriptor *sort = [[NSSortDescriptor alloc]  initWithKey:@"UDF1" ascending:YES];
    NSSortDescriptor  *sort2= [[NSSortDescriptor alloc] initWithKey:@"Name" ascending:YES];
    [request setSortDescriptors:[NSArray arrayWithObjects:sort, sort2,nil]];

    NSArray *propertiesToFetch = [[NSArray alloc] initWithObjects:@"Name", @"ManufacturerID",@"CustomerNumber",@"City", @"StateProvince",@"PostalCode",@"UDF1",@"UDF2", nil];
    [request setPropertiesToFetch:propertiesToFetch];

    self.clientsController =
    [[NSFetchedResultsController alloc] initWithFetchRequest:request
                                        managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil
                                                   cacheName:nil];

    return self.clientsController;

}

我有一个在我的NSPredicate中使用的ManufacturerID索引.这看起来像一个非常基本的NSFetchRequest - 我能做些什么来加快这个速度？或者我刚刚达到了限制？我肯定错过了什么.