NSDictionary NSMutableDictionary

注: iOS 6 新的快捷初始化写法:

NSDictionary:

NSDictionary *dic = @{@"键":@"值",@"键1":@"值1"};

NSMutableDictionary:

NSMutableDictionary *MDic = [@{@"键":@"值",@"键1":@"值1"} mutableCopy];

1:基础初始化

NSMutableDictionary *muDicAsyncImage = [[NSMutableDictionary alloc] init];

[muDicAsyncImage setObject:@"值" forKey:@"键"];

NSString *str= [muDicAsyncImage objectForKey:@"键"];

4:删除某个对象

[ muDicAsyncImage removeObjectForKey: @"键"];