Question

编译此代码时出现同样的错误。我想知道如何成功添加租赁天数和租金率。请帮助。

 Tractor.java:83: error: unexpected type
         RentalDays + RentalRate = RentalProfit;
                    ^
 required: variable
  found value
1 error

代码：

 import java.util.*;

 public class Tractor
{
   private String name;
   private int VehicleID; 
   private int RentalRate;
   private int RentalDays;


   public int setRentalRate(int RentalRate)
{
    if (RentalRate <= 0 || RentalRate > 100000) 
    {
      return -1;
    } 
    else 
    {
        return this.RentalRate;

    }
 }

public int getRentalRate()
 {
     return this.RentalRate;
 }

  public int setRentalDays(int RentalDays)
{
    if (RentalDays <= 0 || RentalDays > 365) 
    {
      return -1;
    } 
    else 
    {
        return this.RentalDays;

    }
 }

public int getRentalDays()
 {
     return this.RentalRate;
 }

  public int RentalProfit(int RentalRate, int RentalDays)
  {
     int RentalProfit;

     RentalDays + RentalRate = RentalProfit;
  }

}

Answer 1

只需编写要添加的代码。

public int RentalProfit(int RentalRate, int RentalDays)
{
  return RentalDays + RentalRate;
}

RentalDays + RentalRate = RentalProfit;无效，因为=运算符的左手大小应该是要分配的变量，而不是添加的结果。
您的意思是RentalProfit = RentalDays + RentalRate;吗？

Answer 2

更改

destroy

到

public class CustomTabLayout extends TabLayout {
    public CustomTabLayout(Context context) {
        super(context);
    }

    public CustomTabLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomTabLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        try {
            if (getTabCount() == 0)
                return;
            Field field = TabLayout.class.getDeclaredField("mTabMinWidth");
            field.setAccessible(true);
            field.set(this, (int) (getMeasuredWidth() / (float) getTabCount()));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

为什么我继续收到此错误＆＃34;错误：意外类型＆＃34;

2 个答案: