self.backgroundView = ({UIView* view = [[UIViewalloc] initWithFrame:self.bounds];
view.backgroundColor = [UIColorcolorWithWhite:0.5alpha:0.5]; view;});
self.backgroundView = ({UIView* view = [[UIViewalloc] initWithFrame:self.bounds];
view.backgroundColor = [UIColorcolorWithWhite:0.5alpha:0.5]; view;});