iOS 得到字典所有的键值对

// 1

NSDictionary *dic = @{@"8":@"AAAA",
                      @"2":@"BBBBB",
                      @"3":@"CCCCCC",
                      @"1":@"FFFFF"};

NSArray *arrKeys = [dic allKeys];

for (int i = 0 ; i < arrKeys.count ; i++)
{
    NSString *key = arrKeys[i];
    NSString *value = [dic valueForKey:key];
    NSLog(@"%@ = %@",key,value);
}
NSLog(@"%zd",dic.count);

// 2

[dic enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {

  NSLog(@"key = %@ and obj = %@", key, obj);

}];