ios - NSFetchRequest 两个实体并将它们放入 NSMutableArray

Question

我正在尝试使用以下代码使用具有 2 个实体的 NSFetchRequest 填充 TableView :

@property (strong) NSMutableArray *forms;


    NSManagedObjectContext *managedObjectContext = [self managedObjectContext];
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"names"];
    NSFetchRequest *fetchRequest2 = [[NSFetchRequest alloc] initWithEntityName:@"forms"];

    self.forms = [[managedObjectContext executeFetchRequest:fetchRequest error:nil] mutableCopy];
    self.forms = [[managedObjectContext executeFetchRequest:fetchRequest2 error:nil] mutableCopy];


    [self.tableView reloadData];

现在我知道 self.forms 被第二次获取覆盖了，但我不知道如何将所有内容都放入 self.forms 数组中

Answer 1

试试这个:

self.forms = [[managedObjectContext executeFetchRequest:fetchRequest error:nil] mutableCopy];
[self.forms addObjectsFromArray:[[managedObjectContext executeFetchRequest:fetchRequest2 error:nil] mutableCopy]];