将导航栏标题设置为UIBarButtonItem？

Question

这里是我用来将UIBarButtonItems添加到导航栏的一些代码，如何更改显示自定义图像或上传到我的Xcode项目的图像？

UIBarButtonItem *shareItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:nil];
UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:nil];

NSArray *actionButtonItems = @[shareItem, cameraItem];
self.navigationItem.rightBarButtonItems = actionButtonItems;

Answer 1

UIBarButtonItem *shareItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"your_image.png"] style:UIBarButtonItemStyleBordered target:self action:nil];
UIBarButtonItem *cameraItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"your_image.png"] style:UIBarButtonItemStyleBordered target:self action:nil];

self.navigationItem.rightBarButtonItems = [[NSArray alloc] initWithObjects: shareItem, cameraItem, nil];

此外，您不仅可以使用此方法设置图像，还可以设置自定义UIView：

- (id)initWithCustomView:(UIView *)customView

See more info.

Answer 2

在iOS 8中不推荐使用

UIBarButtonItemStyleBordered。请改用UIBarButtonItemStylePlain。

UIBarButtonItem *shareItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"ic_clear"] style:UIBarButtonItemStylePlain target:self action:nil];
NSArray *actionButtonItems = @[shareItem];
self.navigationItem.leftBarButtonItems = actionButtonItems;