iphone - objective-c : UIColor * exception 'NSInvalidArgumentException?

Question

我试图将 UIColor 值存储在它的对象中，其中 UIColor 是类的成员。

当我尝试检索它抛出错误的值时

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CALayerArray set]: unrecognized selector sent to instance 0x5394860'

....第一次抛出时调用堆栈:

_product.ProductTextColor = [self selectColor];

- (UIColor *)selectColor
{
    return [UIColor colorWithRed:(0.0/255) green:(204.0/255) blue:(51.0/255) alpha:1.0f];
}

ProductDetails *prod = [productList objectAtIndex:indexPath.row];
lblProductname.textColor = prod.ProductTextColor;

在最后一行，我试图获取值，但它抛出了错误。哪里

@property (nonatomic, assign) UIColor *ProductTextColor;

是 Product 类的成员。

Answer 1

替换声明

@property (nonatomic, assign) UIColor *ProductTextColor;

与

@property (nonatomic, retain) UIColor *ProductTextColor;