如何修复 Xcode 预期类型错误
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How to fix Xcode expected type error
提问by Tom
Today when I opened up Xcode project and built it for the iOS simulator. Everything was working fine yesterday but this morning there is a compilation error.
今天，当我打开 Xcode 项目并为 iOS 模拟器构建它时。昨天一切正常，但今天早上出现编译错误。
The following line is highlighted red in a header file and the message next to it says "Expected a type".
以下行在头文件中以红色突出显示，旁边的消息显示“预期类型”。
-(void) addObstacle:(Obstacle*) obstacle;
The bit of code hasn't changed in a few days so I'm not really sure why theres now an error.
这段代码在几天内没有改变，所以我不确定为什么现在出现错误。
I have imported Obstacle.h and this is the Obstacle class header:
我已经导入 Obstacle.h，这是 Obstacle 类头文件：
#import "kobold2d.h"
@interface Obstacle : CCNode {
int posXInGrid;
int posYInGrid;
CCSprite* sprite;
}
@property (nonatomic) int posXInGrid;
@property (nonatomic) int posYInGrid;
@property (nonatomic, retain) CCSprite* sprite;
@end
回答by LearnCocos2D
Move #import "Obstacle.h"from the interface (.h) to the implementation file (.m).
#import "Obstacle.h"从接口 (.h)移动到实现文件 (.m)。
Then add @class Obstacle; at the top of the interface file.
然后添加@class Obstacle；在接口文件的顶部。
If this fixes the problem you do have a circular import. See hereto learn why this fixes it. @class is preferable over #importing class headers whenever possible.
如果这解决了问题，您就可以进行循环导入。请参阅此处了解为什么会解决此问题。只要有可能，@class 就比 #importing 类头更可取。
