如何更改 UINavigationBar rightButton 图像？

Question

我想更改 viewWillAppear 中的 UINavigationBar rightButton 图像，为此我尝试这样做：

self.navigationController?.navigationItem.rightBarButtonItem?.image = UIImage(named: "bookmark")

但它不会改变我的 rightButton 的图像。我该如何修复它并更改我的形象？

Answer 1

试试这个

var changeImage:UIImage = UIImage(named: "bookmark")!
changeImage = changeImage.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
var rightButton = UIBarButtonItem(image: changeImage, style: UIBarButtonItemStyle.Bordered, target: self, action: "xxxx")
self.navigationItem.rightBarButtonItem = rightButton

选择-2

书签使用UIBarButtonSystemItemBookmarks

的默认函数

var rightButton: UIBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Bookmarks, target: self, action: "xxxx")
self.navigationItem.rightBarButtonItem = rightButton

一些默认 UIBarbuttonItems 是

typedef NS_ENUM(NSInteger, UIBarButtonSystemItem) {
UIBarButtonSystemItemDone,
UIBarButtonSystemItemCancel,
UIBarButtonSystemItemEdit,  
UIBarButtonSystemItemSave,  
UIBarButtonSystemItemAdd,
UIBarButtonSystemItemFlexibleSpace,
UIBarButtonSystemItemFixedSpace,
UIBarButtonSystemItemCompose,
UIBarButtonSystemItemReply,
UIBarButtonSystemItemAction,
UIBarButtonSystemItemOrganize,
UIBarButtonSystemItemBookmarks,
UIBarButtonSystemItemSearch,
UIBarButtonSystemItemRefresh,
UIBarButtonSystemItemStop,
UIBarButtonSystemItemCamera,
UIBarButtonSystemItemTrash,
UIBarButtonSystemItemPlay,
UIBarButtonSystemItemPause,
UIBarButtonSystemItemRewind,
UIBarButtonSystemItemFastForward,
UIBarButtonSystemItemUndo NS_ENUM_AVAILABLE_IOS(3_0),
UIBarButtonSystemItemRedo NS_ENUM_AVAILABLE_IOS(3_0),
UIBarButtonSystemItemPageCurl NS_ENUM_AVAILABLE_IOS(4_0),
};

Answer 2

self.navigationController?.navigationItem.rightBarButtonItem?.image= UIBarButtonItem(image: //Image Name, style: UIBarButtonItemStyle.Plain, target: self, action: //ACTION NAME)

Answer 3

试试这个，我是 swift 的新手，这就是我在 Objective C 中完成此代码的原因。

UIButton *btnRight = [UIButton buttonWithType:UIButtonTypeCustom];


[btnRight setFrame : CGRectMake(0, 0, 60, 35)];

[btnRight setImage:[UIImage imageNamed:@"prefferedImage"] forState:UIControlStateNormal];
[btnRight addTarget:self action:@selector(defindeActionMethod:) forControlEvents:UIControlEventTouchUpInside];

[btnRight setContentHorizontalAlignment:UIControlContentHorizontalAlignmentRight];

btnRight.imageView.contentMode = UIViewContentModeScaleAspectFit;
btnRight.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
btnRight.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;

UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithCustomView:btnRight];
[rightBarButton setTintColor:[UIColor whiteColor]];
self.navigationItem.rightBarButtonItem = rightBarButton;

如何更改 UINavigationBar rightButton 图像？

How to change UINavigationBar rightButton image?

uinavigationbar

uinavigationitem

ios

swift