内部编译器错误：总线错误

Question

我有以下代码（见下文），如果我按原样编译它，我会收到“内部编译器错误：总线错误”。如果我注释掉最后一个 ImageOne.transform，一切都会正常。如果文件以 .m 结尾，如果我将其更改为 .mm 则可以正常编译，那么它就会出现问题。有什么想法吗？

[UIView animateWithDuration:duration1 delay:delay options:UIViewAnimationCurveEaseIn animations:^{
            ImageOne.transform = CGAffineTransformMakeScale(scale1, scale1);
            ImageOne.alpha = 1.0f;

        } 
                         completion:^(BOOL finished){
                             [UIView animateWithDuration:SecondDuration delay:SecondDelay options:UIViewAnimationCurveEaseOut animations:^{
                                 ImageOne.transform = CGAffineTransformMakeScale(scale2, scale2);
                             }
                                              completion:^(BOOL finished){
                                                  [UIView animateWithDuration:SecondDuration delay:SecondDelay options:UIViewAnimationCurveEaseOut animations:^{
                                                      ImageOne.transform = CGAffineTransformMakeScale(scale1, scale1); //results in bus error, i think its due to nesting

                                                  }
                                                                   completion:nil];
                                              }];
                         }];
    }

Answer 1

为什么要嵌套另一个块，而不是像这样将

ImageOne.transform = CGAffineTransformMakeScale(scale1,scale1);

添加到第一个块中

completion:^(BOOL finished)
{
  [UIView animateWithDuration:SecondDuration delay:SecondDelay options:UIViewAnimationCurveEaseOut animations:^{
              ImageOne.transform = CGAffineTransformMakeScale(scale1, scale1);
              ImageOne.transform = CGAffineTransformMakeScale(scale2, scale2);

希望这会有所帮助。 :)