本文介绍了如何将一个NSMutableArray复制到另一个NSMutableArray的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个具有值firstname和id的nsmutablearray(xmlParseArray),我想只将firstname复制到另一个nsmutablearray(copyArray)。我怎么能这样做我想尝试更多但尚未结果请给我一些关于taht的想法。
I have an nsmutablearray(xmlParseArray) having values firstname and id, i want to copy only firstname into another nsmutablearray(copyArray). how can i do this i am trying more but not yet result please give me some idea about taht.
提前致谢:
推荐答案
我猜你的意思是第一个数组 xmlParseArray
包含一个 NSDictionary 每个对象都附加了对象firstname和id的对象。实现这一目标的一种方法是:
I'm guessing you mean that the first array, xmlParseArray
, contains a list of NSDictionary
objects which each have objects attached to the keys "firstname" and "id". One way to accomplish that would be like this:
NSMutableArray *copyArray = [[NSMutableArray alloc] initWithCapacity:[xmlParseArray count]];
for(NSDictionary *dict in xmlParseArray)
if([dict objectForKey:@"firstname"])
[copyArray addObject:[dict objectForKey:@"firstname"]];
// ...do whatever with copyArray...
[copyArray release];
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