ios - dictionaryWithObjectsAndKeys 内循环

Question

尝试使用 dictionaryWithObjectsAndKeys 向字典添加值，我想使用 for 循环添加对象，但我找不到正确的出路，请帮忙，使用 for 循环仅显示最后一个值，其他值不出现.看起来这些值是覆盖的并且没有被附加。

没有for循环的正常代码

toListDictUnSorted = [NSDictionary dictionaryWithObjectsAndKeys:
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:316], @"USD 50000", @"English", nil], @"USA",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:194], @"USD 12000", @"Portugese", nil], @"Brazil",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:1210], @"USD 1592", @"Hindi", nil], @"India",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:1353], @"USD 6075", @"Chinese", nil], @"China",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:143], @"USD 14037", @"Russian", nil], @"Russia",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:59], @"USD 33115]", @"Italian", nil], @"Italy",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:63], @"USD 38591", @"English", nil], @"Great Britain",
                               [NSArray arrayWithObjects:[NSNumber numberWithInt:29], @"USD 25000", @"Arabic", nil], @"Saudi Arabia",
                               nil]; */

for循环代码

for (int i = 0; i < [_toData count]; i++)
         {

             toListDictUnSorted = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                  [NSArray arrayWithObjects:[NSNumber numberWithInt:meters], [[_toData objectAtIndex:i] valueForKey:@"name"], nil], [[_toData objectAtIndex:i] valueForKey:@"name"] , nil];



        }

Answer 1

你应该使用 NSMutableDictionary 而不是 NSDictionary

编辑:

你想要这个:

NSMutableDictionary *toListDictUnSorted = [[NSMutableDictionary alloc] init];
    for (int i = 0; i < [_toData count]; i++)
    {
        [toListDictUnSorted setObject:[NSArray arrayWithObjects:[NSNumber numberWithInt:meters], [[_toData objectAtIndex:i] valueForKey:@"name"], nil] forKey:[[_toData objectAtIndex:i] valueForKey:@"name"]];
    }