iOS11 UIBarButton职位问题

Question

刚刚安装了Xcode9并处理我的项目。 我注意到导航栏上的按钮现在的位置不同。

下面的图片是不同规格和Xcode下的导航栏：

1. iPhone7plus目前在xcode8下部署
2. Xcode9中的iPhone8plus



1. Xcode9中的iPhone8



正如您所看到的，在使用之前Xcode的当前部署中的iPhone7 +中，按钮正确定位在左侧和右侧。

然而，当我在xCode9中运行时，按钮和徽标略微向右缩进。

任何人都可以帮我解释如何让按钮正确左右摆放，并将徽标位置正确放在中间位置？

以下是为导航栏设置的代码和设置的按钮：

UIView * leftNaviNaviButtonView = [[UIView alloc] initWithFrame:CGRectMake(0, 0,delegate.windowWidth, 44)];
[leftNaviNaviButtonView setBackgroundColor:[UIColor grayColor]];

UIBarButtonItem * negativeSpacer = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]autorelease];
negativeSpacer.width = -16;

searchbarBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[searchbarBtn setFrame:CGRectMake(0,0,50,44)];
[searchbarBtn setImage:[UIImage imageNamed:@"search_btn.png"] forState:UIControlStateNormal];
[searchbarBtn.imageView setContentMode:UIViewContentModeScaleAspectFit];
[leftNaviNaviButtonView addSubview:searchbarBtn];

UIImageView * logoImageView = [UIImageView new];
[logoImageView setFrame:CGRectMake((delegate.windowWidth-170)/2,0,170,40)];
[logoImageView setImage:[UIImage imageNamed:@"app_headerlogo.png"]];
[logoImageView setContentMode:UIViewContentModeScaleAspectFit];
[leftNaviNaviButtonView addSubview:logoImageView];

UIButton *advanceSearch = [UIButton buttonWithType:UIButtonTypeCustom];
[advanceSearch setFrame:CGRectMake(delegate.windowWidth-50,0,50,44)];
[advanceSearch setImage:[UIImage imageNamed:@"sear  ch_adv.png"] forState:UIControlStateNormal];
[advanceSearch.imageView setContentMode:UIViewContentModeScaleAspectFit];
[leftNaviNaviButtonView addSubview:advanceSearch];

[self.navigationItem setLeftBarButtonItems:[NSArray arrayWithObjects:negativeSpacer,[[[UIBarButtonItem alloc] initWithCustomView:leftNaviNaviButtonView]autorelease], nil]];
[leftNaviNaviButtonView release];

提前非常感谢你。