NSMutablearray将对象从索引移到索引 [英] NSMutablearray move object from index to index

问题描述

我有一个带有可调整行的UItableview，数据在NSarray中.那么，当调用适当的tableview委托时，如何在NSMutablearray中移动对象?

I have a UItableview with reordable rows and the data is in an NSarray. So how do I move an object in the NSMutablearray when the appropriate tableview delegate is called?

另一种询问方式是如何对NSMutableArray重新排序?

Another way to ask this is how to reorder an NSMutableArray?

推荐答案

id object = [[[self.array objectAtIndex:index] retain] autorelease];
[self.array removeObjectAtIndex:index];
[self.array insertObject:object atIndex:newIndex];

仅此而已.注意保留计数很重要，因为数组可能是唯一一个引用该对象的数组.

That's all. Taking care of the retain count is important, since the array might be the only one referencing the object.

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