适配iPhone刘海屏必备

欢迎来怼👏

+ (CGFloat)screenTopMargin {
    if (@available(iOS 11.0, *)) {
        return [UIApplication sharedApplication].keyWindow.safeAreaInsets.top;
    } else {
        return [[UIApplication sharedApplication] statusBarFrame].size.height;
    }
}

+ (CGFloat)screenBottomMargin {
    if (@available(iOS 11.0, *)) {
        return [UIApplication sharedApplication].keyWindow.safeAreaInsets.bottom;
    } else {
        return 0.0;
    }
}