Java.lang.ClassCastException错误和应用程序崩溃

错误日志我被困在这里我尝试了很多解决方案，但都是相同的错误

java.lang.ClassCastException: com.beauty.fashion.style.KidsNavigationDrawerActivity cannot be cast to com.beauty.fashion.style.interfaces.UpdateOrderTotal
        at com.beauty.fashion.style.adapters.CheckoutAdapter.<init>(CheckoutAdapter.java:38)
        at com.beauty.fashion.style.fragment.OrderConfirmationFragment.onCreateView(OrderConfirmationFragment.java:109)

---

您需要

KidsNavigationDrawerActivity

来实现

UpdateOrderTotal

接口

大概是这样的：

public class KidsNavigationDrawerActivity extends AppCompatActivity implements UpdateOrderTotal {

// your Activity code here

}

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在实现KidsNavigationDrawer活动的接口后，我自己完成了这项工作

KidsNavigationDrawer活动是我的主页活动，当我选择任何产品并将其添加到购物车时，都会显示产品，但当我点击购物车检查购物车时，应用程序崩溃，出现上述错误日志

if (utils.getCartList().getValue() != null) {
            cartList.addAll(utils.getCartList().getValue());
            if (cartList != null && cartList.size() > 0) {
                linearEmptyCart.setVisibility(View.GONE);
                cvGrandTotal.setVisibility(View.VISIBLE);
                adapter = new CheckoutAdapter(getActivity(), cartList); //This is line 109 
                rvConfirmOrder.setAdapter(adapter);
                rvConfirmOrder.setLayoutManager(new LinearLayoutManager(getActivity()));
                calculateTotal(cartList);
            } else {
                linearEmptyCart.setVisibility(View.VISIBLE);
                cvGrandTotal.setVisibility(View.GONE);
            }
        } else {
            cvGrandTotal.setVisibility(View.GONE);
            linearEmptyCart.setVisibility(View.VISIBLE);
        }

public class KidsNavigationDrawerActivity extends AppCompatActivity implements UpdateOrderTotal {

// your Activity code here

}