ios - 警告：使用 NS_ENUM 类型时整数到指针的转换不兼容

Question

我正在使用枚举，如下所示：

typedef NS_ENUM(NSInteger, MyURLType) {
    MyURLType1,
    MyURLType2,
    MyURLType3
};

当我尝试比较或识别类型时出现问题：

if (type == MyURLType2)

在and的情况下我收到"Incompatible integer to pointer conversion"警告（不是在的情况下）。我在声明中做错了吗？有任何想法吗？MyUrlType2MyUrlType3MyURLType1

谢谢！

score 6 · Accepted Answer

6

于 2013-08-30T08:21:54.400 回答

score 0 · Accepted Answer

why not define type as an int? Then, you can compare the ints. Simple and clean solution.

int type = MyURLTypeX;

will allow you to do

if (type == MyURLType2) since they're both ints.

How is it possible no one has suggested this yet?

score -1 · Accepted Answer

was just researching this, but looks like another option is to cast the enum:

if (type == (MyURLType *) MyURLType2)

3 回答 3