应用程序在通过 Bridging-Header.h 更新到 SWIFT 4.0 之前没有问题现在我在通过以下方式导入的 Objective-C 文件中出现错误：SWIFT 4.0; 代码 9.1。
我在这里问与大多数人类似的问题的唯一原因 - 所有其他答案都是关于 SWIFT。此错误在 OBJECTIVE-C 文件中。这并不重要，程序运行良好，但如何修复错误（而不是隐藏）。
#pragma mark Containment view controller deployment and transition
// Containment Deploy method. Returns a block to be invoked at the
// animation completion, or right after return in case of non-animated deployment.
- (void (^)(void))_deployForViewController:(UIViewController*)controller inView:(UIView*)view
{
if ( !controller || !view )
return ^(void){};
CGRect frame = view.bounds;
UIView *controllerView = controller.view;
controllerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
controllerView.frame = frame;
if ( [controllerView isKindOfClass:[UIScrollView class]] )
{
BOOL adjust = controller.automaticallyAdjustsScrollViewInsets;
if ( adjust )
{
[(id)controllerView setContentInset:UIEdgeInsetsMake(statusBarAdjustment(_contentView), 0, 0, 0)];
}
}
[view addSubview:controllerView];
void (^completionBlock)(void) = ^(void)
{
// nothing to do on completion at this stage
};
return completionBlock;
}