C++ 目标-C++；错误：应为非限定id

最近我检查了我的一个旧应用程序，当我停止工作时，它仍然可以正常工作。但是现在，每次我定义

UIImage*new

时，我都会得到错误

预期的非限定id

方法如下：

- (void)endTorsoWithUIImageView:(UIImageView *)flipper andError:(NSError *)clothingManagerError {
    currActiveCol.torsoCurrCol = (direction == 1)? currActiveCol.torsoCurrCol + 1 : currActiveCol.torsoCurrCol - 1;
    [clothingManager notifyAboutMovementInSection:ECOSTorso inDirection:(direction == 1)? ECCDNext : ECCDPrevious];

    if (direction == 1) {
        if (currActiveCol.torsoCurrCol + 2 < [[clothingManager.sectionSetSizes objectAtIndex:0] intValue]) {
            flipper = [[sectionMatrix objectAtIndex:0] objectAtIndex:(currActiveCol.torsoCurrCol + 2) % 4];
            [flipper setHidden:YES];
            [flipper setCenter:(direction == 1)?   CGPointMake(self.view.bounds.size.width + self.outfitView.frame.size.width, flipper.center.y) : CGPointMake(0 - self.outfitView.frame.size.width, flipper.center.y)];
            [flipper setHidden:NO];

            ECChangeDirection dir = (direction == 1)? ECCDNext : ECCDPrevious;
            UIImage *new = [clothingManager updateAfterChangeInDirection:dir forSection:ECOSTorso withError:&clothingManagerError];
            if (new != NULL) {
                [flipper setImage:new];
                [flipper setFrame:CGRectMake(flipper.frame.origin.x, flipper.frame.origin.y, flipper.frame.size.width, [self ratifierForImage:new])];
                [self centerImageView:flipper forFocus:ASTorso takingLoctionIntoAccount:NO forLocation:0];
                [[imageAssetCollection objectAtIndex:0] replaceObjectAtIndex:(currActiveCol.torsoCurrCol + 2) % 4
                                                              withObject:new];
            } else {
                // TODO: Report error to google analytics
            }
        }
    } else if (direction == -1) {
        if (currActiveCol.torsoCurrCol - 2 >= 0) {
            flipper = [[sectionMatrix objectAtIndex:0] objectAtIndex:(currActiveCol.torsoCurrCol - 2) % 4];
            [flipper setHidden:YES];
            [flipper setCenter:(direction == 1)? CGPointMake(self.view.bounds.size.width + self.outfitView.frame.size.width, flipper.center.y) : CGPointMake(0 - self.outfitView.frame.size.width, flipper.center.y)];
            [flipper setHidden:NO];

            UIImage *new = (UIImage *)[clothingManager updateAfterChangeInDirection:(direction == 1)? ECCDNext : ECCDPrevious                                                           forSection:ECOSTorso                                                                         withError:&clothingManagerError];
            if (new != NULL) {
                [flipper setImage:new];
                [flipper setFrame:CGRectMake(flipper.frame.origin.x, flipper.frame.origin.y, flipper.frame.size.width, [self ratifierForImage:new])];
                [self centerImageView:flipper forFocus:ASTorso takingLoctionIntoAccount:NO forLocation:0];
                [[imageAssetCollection objectAtIndex:0] replaceObjectAtIndex:(currActiveCol.torsoCurrCol + 2) % 4
                                                              withObject:new];
            } else {
                // TODO: Report error to google analytics
            }
        }
    }
}

-（无效）endTorsoWithUIImageView:（UIImageView*）翻转器和错误：（N错误*）ClothingManager错误{
currActiveCol.torsoCurrCol=（方向==1）？currActiveCol.torsoCurrCol+1:currActiveCol.torsoCurrCol-1；
[clothingManager NotifyaboutMovementInstation:ECOSTorso间接：（方向==1）？ECCDNext:ECCDREVIOUS]；
如果（方向==1）{
if（currActiveCol.torsoCurrCol+2<[[clothingManager.sectionSetSizes objectAtIndex:0]intValue]）{
flipper=[[sectionMatrix objectAtIndex:0]objectAtIndex:（currActiveCol.torsoCurrCol+2）%4]；
[翻转设置隐藏：是]；
[flipper setCenter:（方向==1）？CGPointMake（self.view.bounds.size.width+self.oughtView.frame.size.width，flipper.center.y）：CGPointMake（0-self.oughtView.frame.size.width，flipper.center.y）]；
[翻转设置隐藏：否]；
ECChangeDirection dir=（方向==1）？ECCDNext:ECCDREVIOUS；
UIImage*new=[clothingManager updateAfterChangeInDirection:dir for Section:ECOSTorso withError:&clothingManager错误]；
如果（新！=NULL）{
[翻转器设置图像：新]；
[flipper setFrame:CGRectMake（flipper.frame.origin.x，flipper.frame.origin.y，flipper.frame.size.width，[self-ApprovierForImage:new]）；
[self-centerImageView:flipper for Focus:ASTorso TakingLocation帐户：NO for Location:0]；
[[imageAssetCollection对象索引：0]替换对象索引：（currActiveCol.torsoCurrCol+2）%4
withObject:新]；
}否则{
//TODO:向google analytics报告错误
}
}
}否则如果（方向==-1）{
如果（currActiveCol.torsoCurrCol-2>=0）{
flipper=[[sectionMatrix对象索引：0]对象索引：（currActiveCol.torsoCurrCol-2）%4]；
[翻转设置隐藏：是]；
[flipper setCenter:（方向==1）？CGPointMake（self.view.bounds.size.width+self.oughtView.frame.size.width，flipper.center.y）：CGPointMake（0-self.oughtView.frame.size.width，flipper.center.y）]；
[翻转设置隐藏：否]；
UIImage*new=（UIImage*）[clothingManager更新AfterChangeIndirection:（方向==1）？ECCDNext:ECCDREVIOUS forSection:ECOSTorso withError:&clothingManager错误]；
如果（新！=NULL）{
[翻转器设置图像：新]；
[flipper setFrame:CGRectMake（flipper.frame.origin.x，flipper.frame.origin.y，flipper.frame.size.width，[self-ApprovierForImage:new]）；
[self-centerImageView:flipper for Focus:ASTorso TakingLocation帐户：NO for Location:0]；
[[imageAssetCollection对象索引：0]替换对象索引：（currActiveCol.torsoCurrCol+2）%4
withObject:新]；
}否则{
//TODO:向google analytics报告错误
}
}
}
}

方法定义如下：

-（UIImage*\u Nullable）updateAfterChangeInDirection:（ECChangeDirection）direction:（ECOutfitSection）ecos withError:（NSError*\u Nullable*\u Nullable）error。方法本身没有返回特定映像的问题，如果不存在映像，则返回NULL

我真的迷路了，非常感谢你给我的建议。
不要用
new
作为变量名。然后用
nil
检查
UIImage
，而不是
NULL

不要以“new”作为变量名开头。并用nil检查UIImage，而不是NULL。就这样！非常感谢你！如果您将其添加为答案，我会将其标记为答案，我很高兴它有帮助：）