Ios 客观C法&x27；控制器：didChangeObject:atIndexPath:forChangeType:newIndexPath

Objective-C方法“controller:didChangeObject:atIndexPath:forChangeType:newIndexPath:”由方法提供的“控制器（：didChangeObject:atIndexPath:forChangeType:newIndexPath:）”与协议“NSFetchedResultsControllerDelegate”中的可选要求方法“控制器（：didChangeObject:atIndexPath:forChangeType:newIndexPath:）”冲突

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看起来合适的方法签名是：

func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?) {

}

任何解决这些问题的简单方法都是允许Xcode自动完成方法签名。然后，用自动生成的签名替换方法的签名。为此，定义方法时只需键入

controller

，即可查看所有匹配方法的列表

func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?) {

}