Suppressing line specific XCode compiler warnings

问题

Similar to Ben Gottlieb's question, I have a handful of deprecated calls that are bugging me. Is there a way to suppress warnings by line? For instance:

 if([[UIApplication sharedApplication]
  respondsToSelector:@selector(setStatusBarHidden:withAnimation:)]) {

  [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
 } else {
  [[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO]; //causes deprecation warning
 }

All I care about is that line. I don't want to turn off all deprecation warnings. I would also rather not do something like suppress specific warnings by file.

There have been a few other circumstances where I wanted to flag a specific line as okay even though the compiler generates a warning. I essentially want to let my team know that the problem has been handled and stop getting bugged about the same line over and over.

回答1:

Vincent Gable has posted an interesting solution. In short:

@protocol UIApplicationDeprecatedMethods
- (void)setStatusBarHidden:(BOOL)hidden animated:(BOOL)animated;
@end

if([[UIApplication sharedApplication] respondsToSelector:@selector(setStatusBarHidden:withAnimation:)]) {
    [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide]; 
} else { 
    id<UIApplicationDeprecatedMethods> app = [UIApplication sharedApplication];
    [app setStatusBarHidden:YES animated:NO];
}

回答2:

if([[UIApplication sharedApplication]
  respondsToSelector:@selector(setStatusBarHidden:withAnimation:)]) {

  [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
 } else {
  [(id)[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];
 }

来源：https://stackoverflow.com/questions/2853184/suppressing-line-specific-xcode-compiler-warnings

标签

objective-c

iphone

xcode

compiler-warnings