iOS 导航栏Title不居中

浅浅的花香味﹌ 2022-07-14 09:23 204阅读 0赞

国外得一个链接: http://situee.blogspot.com/2014/10/[iOS][]\-set-navigation-bar-back-button-title.html

最近迷上了简洁风,在使用StoryBoard Push到下一个视图,会在下一个视图的左上角又一个箭头和文字,表示返回键盘,我想那个文字去掉,自己写了一个类继承NavigationController然后用了一个优雅去掉文字.代码如下:

[[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(-100, -60)  forBarMetrics:UIBarMetricsDefault];

然后就遇到一个某一个NavigationItem的Title不居中如图:

![092246253395748.png][]

尼玛为什么会这样.........思考一下....真相是这样..

.![092247060741494.png][]

解决办法是修改backButton,但是你会发现很难修改..最后找到办法了,在本层视图得ViewDidload内添加如下代码

![复制代码][copycode.gif]

NSArray *viewControllerArray = [self.navigationController viewControllers];
        long previousViewControllerIndex = [viewControllerArray indexOfObject:self] - 1;
        UIViewController *previous;
        if (previousViewControllerIndex >= 0) {
            previous = [viewControllerArray objectAtIndex:previousViewControllerIndex];
            previous.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
                                                         initWithTitle:@"xx"
                                                         style:UIBarButtonItemStylePlain
                                                         target:self
                                                         action:nil];
            }

![复制代码][copycode.gif]

好了...运行之后是这样:

![092249353397461.png][]

[iOS]: http://lib.csdn.net/base/1
[092246253395748.png]: /images/20220714/1d1a32eb0c344cfeb48d98d04cc44259.png
[092247060741494.png]: /images/20220714/7ea250e2f39d4be098466fb1edea91b3.png
[copycode.gif]: /images/20220714/e4263fa1ca2b4e7d92623f08e93dfe49.png
[092249353397461.png]: /images/20220714/5aca01bd9828454b81006a9131aff374.png