内部编译器错误：总线错误

Question

我有下面的代码（见下文），如果我编译它是因为我得到“内部编译器错误：总线错误”。如果我注释掉最后一个ImageOne.transform，一切正常。如果文件以.m结尾，那么它会编译好，如果我将其更改为.mm，那么它有问题。有任何想法吗？

[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

你为什么巢另一个块，而不是仅仅增加

ImageOne.transform = CGAffineTransformMakeScale(scale1, scale1);

进入第一块，像这样

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

希望这有助于。 :)