将NSArray转换为NSDictionary

本文介绍了将NSArray转换为NSDictionary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

如何将 NSArray 转换为 NSDictionary ，使用数组对象的int字段作为键 NSDictionary ？

How can I convert an NSArray to an NSDictionary, using an int field of the array's objects as key for the NSDictionary?

推荐答案

- (NSDictionary *) indexKeyedDictionaryFromArray:(NSArray *)array
{
  id objectInstance;
  NSUInteger indexKey = 0U;

  NSMutableDictionary *mutableDictionary = [[NSMutableDictionary alloc] init];
  for (objectInstance in array)
    [mutableDictionary setObject:objectInstance forKey:[NSNumber numberWithUnsignedInt:indexKey++]];

  return (NSDictionary *)[mutableDictionary autorelease];
}

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