将枚举值分配给不可比较的类型int

Question

I am using the c++ library. so i converted my .m file to .mm file .

Now what happens i am not able to set the enum value.

See Enum

 typedef enum{
    ImageSourceTypeCamera,
    ImageSourceTypePhotoLibrary,
    ImageSourceTypeNone
  }
ImageSourceType;

// Property

@property(nonatomic,assign) ImageSourceType ImageSourceType;

Now when i am using this line its give me error

    self.ImageSourceType=2;  / / assigning to 'ImageProcessType' from incompaitable with 'int'

Answer 1

尝试：

self.ImageSourceType = ImageSourceTypePhotoLibrary

Answer 2

To use numbers instead of names for enums, format the definition like so:

typedef enum{
    ImageSourceTypeCamera = 0,
    ImageSourceTypePhotoLibrary = 1,
    ImageSourceTypeNone = 2
  }
ImageSourceType;

self.ImageSourceType = 0; //ImageSourceTypeCamera
self.ImageSourceType = 1; //ImageSourceTypePhotoLibrary 
//etc...

if (self.ImageSourceType == 0) {
    //this is the same as (self.ImageSourceType == ImageSourceTypeCamera)