标签：
NSDictionary
key --->value
索引 --->内容
存储键值对
（1）三种创建方式：
NSDictionary *dict = [NSDictionary dictionaryWithObject:@"Jony" forKey:@"name"];
NSArray *keys = @[@"name", @"location"]; NSArray *objects = @[@"Jony", @"China"]; NSDictionary *dict = [NSDictionary dictionaryWithObject:objects forKey:keys];
NSDictionary *dict = @{@"name" : @"Jony", @"location", @"China"};
（2）调用
id obj = [dict objectForKey:@"name"]; id obj = dict[@"name"];
NSMutableDictionary
NSMutableDictionary *dict = [NSMutableDictionary dictionary]; [dict setObject:@"Jony" forKey:@"name"]; //deleate [dict removeObjectForKey:(id)];
NSMutableDictionary *dict = @{@"name" : @"Jony", @"location", @"China"};
（1）字典遍历方式
NSArray *keys = [dict allKeys];
for (int i = 0; i < dict.count; i++)
{
NSString *key = keys[i];
NSString *object = dict[key];
NSLog(@"%@ = %@", key, object);
}
[dict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop)]
{
NSLog(@"%@ -- %@", key, obj);
//Only oneTime
*stop = YES;
}
NSDictionary，NSMutableDictionary 使用
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原文地址：http://www.cnblogs.com/fangchun/p/4732686.html
