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我在iPhone SDK中使用CoreData。我正在制作一个笔记应用程序。我有一张表格,里面有从我的模型中显示的笔记对象。当按下按钮时,我想将textview中的文本保存到正在编辑的对象中。我该怎么做呢?我一直在尝试几件事,但似乎没有任何工作。在CoreData中保存对象
由于
编辑:
NSManagedObjectContext *context = [fetchedResultsController managedObjectContext];
NSEntityDescription *entity = [[fetchedResultsController fetchRequest] entity];
NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:[entity name] inManagedObjectContext:context];
[newManagedObject setValue:detailViewController.textView.text forKey:@"noteText"];
NSError *error;
if (![context save:&error]) {
/*
Replace this implementation with code to handle the error appropriately.
abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button.
*/
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
上面的代码正确保存它,但它并将其作为新的对象。我希望它被保存为我在tableView中选择的那个。
谢谢,实际上刚刚解决了这个问题。不得不稍微修改一下,因为我正在使用iPad,但基本上使用相同的代码。谢谢 – John 2010-03-27 20:46:21