iphone - 如何记录没有被拖放的元素

Question

我在屏幕上有 4 个苹果和 4 个橙子，还有 2 个篮子，每个篮子一个。我成功地将苹果和橙子拖到各自的篮子中。我希望在所有物品都放入篮子后出现下一个屏幕按钮。

如何计算所有物品都放在他们的篮子里？: 我的代码

    CGPoint location = [touch locationInView:touch.view];
    apple.center = location;

   if (apple.center.x == 233 || apple.center.y == 368)
   {
    apple.hidden = YES;
   }

Answer 1

使用 2 个int计数器：numberOfApplesInBasket和numberOfOrangesInBasket。

CGPoint location = [touch locationInView:touch.view];
apple.center = location;

if (apple.center.x == 233 || apple.center.y == 368)
{
  apple.hidden = YES;
  numberOfApplesInBasket += 1;
  if (numberOfApplesInBasket == 4 && numberOfOrangesInBasket == 4) {
    // Do your thing
  }
}