UILabel: the use of CGColor for color properties or inside attributed strings is not supported

'NSInternalInconsistencyException', reason: 'UILabel: the use of CGColor for color properties or inside attributed strings is not supported.'

这个错误咋回事呢？

    [rstring addAttributes:@{NSForegroundColorAttributeName:[UIFont systemFontOfSize:10.0 weight:UIFontWeightRegular],} range:NSMakeRange(string.length-1, 1)];

NSForegroundColorAttributeName 对应的值写成了字体 [UIFont systemFontOfSize:10.0 weight:UIFontWeightRegular]

正确代码

    [rstring addAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:10.0 weight:UIFontWeightRegular],} range:NSMakeRange(string.length-1, 1)];

实属低级错误啊